Full Form of Hardware and Networking Devices
This article provides the largest collection of full forms. Learn the meanings of the most commonly used abbreviated terms in the computer hardware and networking field.
| A | Ampere |
| A | Anchor |
| A/N/K | alphabetic, numeric, katakana |
| a+ | a+ |
| a11y | accessibility |
| A2A | application-to-application |
| AA | automated attendant |
| AA | anti-aliasing |
| AAA | authentication, authorization, and accounting |
| AAB | All-to-all broadcast |
| AAC | Advanced Audio Coding |
| AAC | ATM access concentrator |
| AAL | ATM adaptation layer |
| AARP | AppleTalk Address Resolution Protocol |
| AAS | Auto Area Segmentation |
| AAT | Average Access Time |
| AAUI | Apple Attachment Unit Interface |
| ABAP | Advanced Business Application Programming |
| ABC | activity-based costing |
| ABC | Atanasoff-Berry Computer |
| ABEND | abnormal end |
| ABEND | Absent By Enforced Net Deprivation |
| ABI | application binary interface |
| ABLE | Agent Building and Learning Environment |
| ABM | activity-based management |
| ABME | asynchronous balanced mode extended |
| ABR | Automatic Baud Rate detection |
| ABR | available bit rate |
| AC | alternating current |
| AC97 | AC97 |
| ACA | Australian Communications Authority |
| ACAP | Application Configuration Access Protocol |
| ACC | Adaptive Cruise Control |
| ACC | Authorization Contract for Containers |
| ACCU | Association of C and C++ Users |
| ACD | Automatic Call Delivery |
| ACD | automatic call distributor or distribution |
| ACDI | Asynchronous Communications Device Interface |
| ACE | access control entry |
| ACE | Adobe Certified Expert |
| ACE | Advanced CMOS-ECL |
| ACE | Agile Communication Environment |
| ACEE | access control environment element |
| ACF | Advanced Communications Function |
| ACF2 | Access Control Facility 2 |
| ACG | adaptive code generation |
| ACH | automated clearinghouse |
| ACI | access control information |
| ACID | atomicity, consistency, isolation, durability |
| ACK | acknowledgement |
| ACL | Access control list |
| ACL | application connectivity link |
| ACL | Asianet Communications Limited |
| ACL | Asynchronous Connectionless Link |
| ACM | Address Complete Message |
| ACM | Association for Computing Machinery |
| ACMS | Application Control and Management System |
| ACP | array control processor |
| ACPI | advanced configuration and power interface |
| ACPI | Advanced Configuration and Power Interface |
| ACR | Allowed Cell Rate |
| ACR | attenuation-to-crosstalk ratio |
| ACRI | additional coding-related required information |
| ACROSS | Automated Cargo Release and Operations Service System |
| ACS | Affiliated Computer Services, Inc |
| ACSE | Association Control Service Element |
| ACSLS | Automated Cartridge System Library Software |
| ACT | activity |
| ACT | access control template |
| ActiveX | ActiveX |
| Activity Streams | Activity Streams |
| ACU | abstract code unit |
| AD | Active Directory |
| AD | Administrative Domain |
| Ad Hoc Network | Ad Hoc Network |
| Ada | Ada |
| ADAPT | Architecture, Design, Analysis and Planning Tool |
| ADB | Apple Desktop Bus |
| ADC | Advanced Direct Connect |
| ADC | Analog to Digital Converter |
| ADC | automated data collection |
| ADCCP | Advanced Data Communications Control Procedures |
| ADDM | Application Discovery and Dependency Mapping |
| ADDM | Automatic Database Diagnostic Monitor |
| ADE | Application Data Export |
| ADE | application development environment |
| ADF | Activity Decision Flow |
| ADF | Application Development Facility |
| ADF | automatic document feeder |
| ADI | Analog Devices, Inc. |
| ADI | Application Desktop Integrator |
| ADK | Additional Decryption Key |
| ADL | Advanced Distributed Learning |
| ADM | Agile development management |
| ADM | Application Development Manager |
| ADMD | Administration Management Domain or Administrative Management Domain |
| ADMF | Asynchronous Data Mover Facility |
| admin | ADMINISTRATOR |
| ADN | Advanced Digital Network |
| ADN | application delivery networking |
| ADO | ActiveX Data Objects |
| ADP | Accidental Damage Protection |
| ADPCM | adaptive differential pulse code modulation |
| ADS | Active Directory Service |
| ADS | Asynchrous Data Switching |
| ADSI | Active Directory Services Interface |
| ADSI | Analog Display Services Interface |
| ADSL | asymmetrical digital subscriber line |
| ADSL | Asymmetric Digital Subscriber Line |
| ADSM | ADSTAR Distributed Storage Manager |
| ADSP | AppleTalk data stream protocol |
| ADSR | Attack, Decay, Sustain, Release |
| ADSTAR | Automated Document Storage and Retrieval |
| ADT | Abstract Data Type |
| ADT | admission, discharge and transfer |
| ADT | application deployment template |
| ADTG | Advanced Data Table Gram |
| ADUC | Active Directory Users and Computers |
| Adwords | Adwords |
| AEC | Architecture, Engineering, Construction |
| AEP | AppleTalk echo protocol |
| Aero | Aero |
| AES | Advanced Encryption Standard |
| AF | Assured Forwarding |
| AF | audio frequency |
| AFAICS, AFAIK, AFAIR | As Far As I Can See/Know/Recall |
| AFC | antiferromagnetically coupled |
| AFI | Authority and Format Identifier |
| AFIS | Automated Fingerprint Identification System |
| AFK | Away From Keyboard |
| AFL | Academic Free License |
| AFM | Atomic Force Microscope |
| AFP | AppleTalk Filing protocol |
| AFP | Advanced Function Printing |
| AFP | Apple Filing Protocol |
| AGC | Automatic Gain Control |
| AGP | accelerated graphics port |
| AGP | Accelerated Graphics Port |
| AHCI | Advanced Host Controller Interface |
| AHP | analytical hierarchy process |
| AI | Action Indicator |
| AI | Adobe Illustrator |
| AI | artificial intelligence |
| AIA | Application Integration Architecture |
| AID | attention identifier |
| AIM | AOL Instant Messenger |
| AIN | Advanced Intelligent Network |
| AIO | all in one |
| AIOD | Automatic Identified Outward Dialing |
| AIP | Advanced Inspection and Prevention |
| AIR | Additive Increase Rate |
| air interface | air interface |
| air PBX | air PBX |
| AIT | Advanced Intelligent Tape |
| AIUI | As I Understand It |
| AIX | Advanced Interactive Executive |
| Ajax | Asynchronous JavaScript and XML |
| AJP | Apache JServ Protocol |
| AL PA | Arbitrated Loop Physical Address |
| ALET | access list entry token |
| ALG | Application Layer Gateway |
| ALGOL | ALGOrithmic Language |
| ALI | Application layer interface |
| ALM | Application Life Cycle Management |
| ALM | Asset Lifecycle Management |
| ALM | Asynchronous Line Multiplexer |
| ALP | Application Layer Program / Protocol |
| ALSA | Advanced Linux Sound Architecture |
| ALT | alternative |
| ALU | Alcatel-Lucent |
| ALU | arithmetic logic unit |
| always-on | always-on |
| AM | Amplitude Modulation |
| AMA | automatic message accounting |
| Amanda | (formerly) Advanced Maryland Automatic Network Disk Archiver |
| AMD | advanced micro devices |
| AMD | Active Matrix Display |
| AMD | Advanced Microchip Devices |
| AMD | architected model-driven |
| AME | Advanced Metal Evaporated |
| AMI | advanced metering |
| AMI | Alternate Mark Inversion |
| ami | Analyze, Metricate, Improve |
| AMI | Application Messaging Interface |
| AMI | infrastructure |
| AML | Anti-Money-Laundering |
| AML | Astronomical Markup Language |
| AMMA | Advanced Memory Management Architecture |
| AMP | ampere (A) |
| AMP | amplifier |
| AMP | Asymmetric Multi-Processing |
| AMPS | Advanced Mobile Phone System |
| AMR | audio modem riser |
| AMR | Audio Modem Riser |
| AMR | Automatic meter reading |
| AMRF | Action Message Retention Facility |
| AMS | access method services |
| AMS | Analog/Mixed-Signal |
| AMS | Application Management Services |
| AMT | Active Management Technology |
| AMT | address mapping table |
| AMTA | American Mobile Telecommunications Association |
| ANDF | Architecture-Neutral Distribution Format |
| Android | Android |
| ANI | Automatic Number Identification |
| Anon FTP | Anonymous FTP |
| Anonymous | Anonymous |
| ANOVA | analysis of variance |
| ANR | automatic network routing |
| ANSI | American National Standards Institute |
| antenna | antenna |
| ANX | Automotive Network Exchange |
| AOA | angle of arrival |
| AOCE | Apple Open Collaboration Environment |
| AoE | Ata Over Ethernet |
| AOF | Advanced Open File |
| AOF | application object file |
| AOL | America Online |
| AOL | Application Object Library |
| AOR | Address of Record |
| AP | access point |
| APA | all-points addressable |
| APaaS | application platform as a service |
| APACS | Association for Payment Clearing Services |
| Apart | a challenge-response system test designed to differentiate humans from automated |
| APaRT | automated packet recognition/translation |
| APC | American Power Conversion |
| APC | Antenna Phase Center |
| APC | asynchronous procedure call |
| APDU | application-layer protocol data unit |
| APF | Automated Purposing Framework |
| API | Application Programming Interface |
| API | Advanced Photonix, Inc |
| API | Application Programming Interface |
| APIPA | automatic private internet protocol addressing |
| APM | advanced power management |
| APM | Active policy management |
| APM | Advanced Power Management |
| APM | application performance management |
| APML | Attention Profiling Markup Language |
| APNIC | Asia Pacific Network Information Center |
| APO | Advanced Planner and Optimizer |
| APOP | Authenticated Post Office Protocol |
| APOT | Alternate (Additional) Point of Termination |
| app | application |
| APPC | Advanced Peer to Peer Communications |
| APPC | Advanced Program-to-Program Communication |
| applet | applet |
| APPN | Advanced Peer to Peer Networking |
| APPN | Advanced Peer to Peer Networking |
| APR | Apache Portable Runtime |
| APS | advanced planning and scheduling |
| APS | Automatic Protection Switching |
| APWG | Anti-Phishing Working Group |
| AQCB | Automated Quote Contract Billing |
| AR | Access Rate |
| AR | Augmented reality |
| ARA | Apple Remote Access |
| ARAD | architected rapid application development |
| ARAG | AntiReflection AntiGlare |
| ARC | Ames Research Center |
| ARC | Archive |
| archive | archive |
| ARCnet | Attached Resource Computer Network |
| ARCNET | Attached Resource Computer NETwork |
| ARD | Automatic Ring Down |
| ARIA | Accessible Rich Internet Applications |
| ARIN | American Registry for Internet Numbers |
| ARL | ABLE Rule Language |
| ARM | Active Registry Monitor |
| ARM | Advanced RISC Machines |
| ARM | Asynchronous Response Mode |
| ARP | address resolution protocol |
| ARP | Address Resolution Protocol |
| ARPANET | Advance Research Projects Agency Network |
| ARQ | automatic repeat request |
| ARS | Action Request System |
| ARS | automatic route selection |
| ART | Additional Reference Transmission |
| ARTS | Association for Retail Technology Standards |
| ARu | audio response unit |
| ARUP | AppleTalk update routing Protocol |
| AS | Activesync |
| AS / ASN | autonomous system (number) |
| AS/400 | Application System/400 |
| AS2 | Applicability Statement 2 |
| ASA | average speed of answer |
| ASBR | Autonomous System Boundary Router |
| ASC | Abstract Syntax Checker |
| ASCII | American Standard Code for Information Interchange |
| ASCL | Asianet Satellite Communications Limited |
| ASE | Adaptive Server Enterprise |
| ASE | application service element |
| ASF | Advanced Streaming Format |
| ASF | Automatic Sheet Feeder |
| ASIC | Application-Specific Integrated Circuit |
| ASIF | access security information field |
| ASIS | access security information subfield |
| ASK | Anomalous State of Knowledge |
| ASLR | Address Space Layout Randomization |
| ASLS | Analog Single Line Station |
| ASM | Automatic Storage Management |
| ASM | Auto-sequencing memory |
| ASML | originally ASM Lithography (ASM for Advanced Semiconductor Materials) |
| ASN | Abstract Syntax Notation |
| ASN.1 | Abstract Syntax Notation One |
| ASO | Address Supporting Organization |
| ASP | AppleTalk session protocol |
| ASP | Abstract Service Primitive |
| ASP | Active Server Pages |
| ASP | Application Server Process |
| ASP | Application Service Provider |
| ASP | Aspect Oriented Programming |
| ASP | Average Selling Price |
| ASPI | Advanced SCSI Programming Interface |
| ASPX | Active Server Pages eXtended |
| ASQ | Automated Software Quality |
| ASR | automated system recovery |
| ASR | Access Service Request |
| ASR | Automated System Recovery |
| ASR | Automatic Send and Receive |
| ASR | Automatic Speech Recognition |
| ASV | Approved Scanning Vendor |
| AT | advanced technology |
| AT | Advanced Technology |
| AT&T | American Telephone And Telegraph |
| ATA | advanced technology attachment |
| ATA | Actual Time of Arrival |
| ATA | Advanced Technology Attachment |
| ATA | Analog Telephone Adaptor |
| ATAG | Authoring Tool Accessibility Guidelines |
| ATAPI | advanced technology attachment packet interface |
| ATAPI | AT Attachment Packet Interface |
| ATB | All the Best |
| ATB | all trunks busy |
| ATCA | Advanced Telecom Computing Architecture |
| ATG | advanced technology group |
| ATG | Art Technology Group |
| ATI | Allied Telesyn International |
| ATL | Active Template Library |
| ATL | automated tape library |
| ATLAS | Authorization Token Layer Acquisition Service |
| ATM | asynchronous transfer mode |
| ATM | Adobe Type Manager |
| ATM | asynchronous transfer mode |
| ATM | At the moment |
| ATM | automated teller machine |
| ATO | assemble to order |
| Atom | Any Transport over MPLS |
| Atom | Atom |
| ATP | AppleTalk Transaction Protocol |
| ATP | AppleTalk Transaction Protocol |
| ATP | available to promise |
| ATPCO | Airline Tariff Publishing Company |
| ATRAC | Adaptive TRansform Acoustic Coding |
| ATRN | Authenticated Turn |
| ATS | Abstract Test Suite |
| ATS | Air to Surface |
| ATS | Applications Technology Satellite |
| ATSC | Advanced Television Systems Committee |
| ATTIS | AT&T Information Systems |
| ATU-C / ATU-R | ADSL Transmission Unit, Central or Remote |
| ATUL | ADSL Termination Unit Remote |
| ATVEF | Advanced TV Enhancement Forum |
| ATX | advanced technology extended |
| ATX | Advanced Technology eXtended |
| AU | Access Unit |
| AUDIT | AUtomated Data Input Terminal |
| AUI | Attachment unit interface |
| AUI | Attachment Unit Interface |
| AUIML | Abstract User Interface Markup Language |
| AUP | acceptable use policy |
| AUTOEXEC | Automatic Execution |
| AUTONEG | Autonegotiation |
| Autonomous Vehicles | Autonomous Vehicles |
| AUV | Autonomous Underwater Vehicle |
| AUX | auxiliary device |
| AV | Anti Virus |
| AV | Audio Video or Visual |
| avatar | avatar |
| AVD | alternate voice data |
| AVED | AntiVirus Emergency Discussion list |
| AVG | AVG |
| AVI | Audio/Video Interleaved |
| AVK | Application Verification Kit |
| AVS | Application Visualisation System |
| AVST | Applied Voice & Speech Technologies Inc. |
| AVVID | Architecture for Voice, Video and Integrated Data |
| AWD | Access Workflow Designer |
| AWE | Advanced WavEffects |
| AWS | Advanced Wireless Services |
| AWS | Amazon Web Services |
| AWS | Autonomous Web Services |
| AWT | Abstract Window Toolkit |
| AZERTY | AZERTY |
| b | bit |
| B | byte |
| B channel | Bearer Channel |
| B2B | business-to-business |
| B2C | business-to-consumer |
| B2E | business-to-employee |
| B8ZS | Binary Eight Zero Suppression. |
| BAA | Blanket Authorization Agreement |
| BAC | BroadCast Agent |
| BACNET | Building Automation and Control Network protocol |
| BAF | Bellcore AMA Format |
| BAI | Bank Administration Institute |
| BAM | business activity monitoring |
| BAN | Body Area Networks |
| BAPI | Business Application Programming Interface |
| bar file | broker archive file |
| Basel II | Basel Capital Accord |
| BASH | Bourne-Again SHell |
| BASIC | Beginners’ All-purpose Symbolic Instruction Code |
| BAT | Baby Advanced Technology |
| BBC | British Broadcasting Corporation |
| BBCs | buffer-to-buffer credits |
| BBN | Bolt, Beranek and Newman |
| BBP | Business-to-Business Procurement |
| BBS | Bulletin Board System |
| BC4J | Business Components For Java |
| BCB | buffer control block |
| Bcc | Blind Carbon Copy |
| BCC | Block Check Character |
| BCD | binary-coded decimal |
| BCE | Bell Canada Enterprises; |
| BCEL | Byte Code Engineering Library |
| BCI | Business Continuity Institute |
| BCM / BCMP | Business Continuity Management (Planning) |
| BCOCA | Bar Code Object Content Architecture |
| BCP | Best Current Practice |
| BCS | basic content services |
| BCUG | bilateral closed user group |
| BCV | business continuance volume |
| BCX | Basic To C Translator |
| BD | Blu-ray Disc |
| BDC | Backup Domain Controller |
| BDC | Backup Domain Controller |
| BDF | building distribution frame |
| BECN | Backward Explicit Congestion Notification |
| BEEP | Blocks Extensible Exchange Protocol |
| Bellcore | Bell Communications Research |
| BER | Basic Encoding Rules |
| BERT | Bit Error Rate Test |
| BES | BlackBerry Enterprise Server |
| BFR | Bona Fide Request |
| BFT | Binary File Transfer |
| BGA | ball grid array |
| BGAN | Broadband Global Area Network |
| BGI | Binary Gateway Interface |
| BGP | Border Gateway Protocol |
| BGP | Border Gateway Protocol |
| BGP | Border Gateway Protocol (routing protocol) |
| BGP-4 | Border Gateway Protocol-4 |
| B-HAVW | Behavioral Heuristic Analyzer in Virtual Environments |
| BHCA | busy hour call attempt |
| BHCC | busy hour call completion |
| BHLI | Broadband High Layer Information |
| BHMC | Busy Hour Minutes of Capacity |
| BHO | Browser Help Object |
| BI | business intelligence |
| BIA | business impact analysis |
| BIBOP | big bag of pages |
| BIC | bank identifier code |
| BICI | Broadband Inter-Carrier Interface |
| BiDi | Bi-Directional |
| BIDS | Business Intelligence Development Studio |
| Bin | binary |
| Binhex | BINary HEXadecimal |
| BIOD | block input/output daemon |
| BIOS | basic input/output system |
| BIOS | Basic Input/Output System |
| BIP | Bit Interleaved Parity |
| BIPS | Bank Internet Payment System |
| BIRT | Business Intelligence and Reporting Tools |
| BIST | built-in self test |
| BISUP | Broadband ISDN User’s Part |
| Bisync or BSC | Binary SYNChronous |
| Bit | Binary DigIT |
| BIT7 | Bit Seven |
| BITNET | Because It’s Time Networking |
| BITS | Background Intelligent Transfer Service |
| BITW | Bump-In-The-Wire |
| BIW | Business Information Warehouse |
| BL | BLade Server |
| BLAST | Basic Local Alignment Search Tool |
| BLISS | Broadband Local Integrated Services Solution |
| B-LLI | Broadband Low Layer Information |
| BLOB | binary large object |
| BLOG | Better Listings on Google |
| Blog / Blogger | weB LOG |
| BLS | Basic Link Service |
| BMRT | Blue Moon Rendering Tools |
| BMT | Biel Mean Time |
| BNC | Bayonet-Neill-Concelman or British Navel Connector |
| BNC | Bayone-Neill-Concelman / British Naval Connector |
| BNF | Backus-Naur Form |
| BNI | Broadband Network Interface |
| BNOS | Brocade Network OS |
| BO / BOBJ | Business Objects |
| BOA | Basic Object Adapter |
| BOB | Breakout Box |
| BOC | Bell operating company |
| BOCU-1 | Binary Ordered Compression for Unicode |
| BoD | Bandwidth on Demand |
| BOD | Business Object Document |
| BOL | Books Online |
| BOM | Beginning of Message |
| BONDING | Bandwidth on Demand Inter-Operability Group |
| boot | bootstrap |
| BOOTP | Boot Protocol |
| BOOTP | Bootstrap Protocol |
| BOPS | Billions of Processes Per Second |
| BOT | beginning of tape |
| bot / botnet | robot (network) |
| BPA | Business Process Analysis |
| BPC | Business Planning and Consolidation |
| BPDM | Business Process Definition Metamodel |
| BPDU | Bridge Protocol Data Unit |
| BPEL | Business Process Execution Language |
| BPEL4WS | Business Process Execution Language for Web Services |
| bpi | bits per inch |
| BPL | broadband over power lines |
| BPM | business process management |
| BPON | Broadband Passive Optical Network |
| BPOS | Business Productivity Online Standard Suite |
| BPP | Bluetooth Basic Printing |
| BPPM | BMC ProactiveNet Performance Management |
| bps | Bits Per Second |
| BPV | BiPolar Violation |
| BRA | Basic Rate Access |
| BRAN | Broadband Radio Access Networks |
| BRAS | Broadband Remote Access Server |
| BRE | Business rule engines |
| BREW | Binary Runtime Environment for Wireless |
| BRF | Benchmark Report Format |
| BRI | basic rate interface |
| BRI | Basic Rate Interface |
| BROUTER | Bridge-Router |
| BRR | Business Readiness Rating |
| BRZ | Bipolar Return to Zero |
| BS 7799 | British Standard 7799 |
| BSA | Business Software Alliance |
| BSC | Binary Synchronous Communication |
| BSC | Balance Score Card |
| BSC | binary synchronous communication |
| BSD | Berkeley Software Distribution |
| BSDI | Berkeley Software Design, Inc. |
| BSE | Basic Service Elements |
| BSM | Business Service Management |
| BSNL | Bharat Sanchar Nigam Limited |
| BSoD | Blue Screen of Death |
| BSP | board support package |
| BSS | Base Station System |
| BSS | Basic service set (Wi-Fi) |
| BSSID | basic service set identifier |
| BST | binary search tree |
| BT | BitTorrent |
| BTAG | Beginning Tag |
| BTAM | Basic Telecommunications Access Method |
| BTM | Benchmark Timing Methodology |
| BTO | Business technology optimization |
| BTS | Bits Per Second |
| BTW | By The Way |
| BTX | balanced technology extended |
| BTX | Balanced Technology eXtended |
| BUS | Broadcast and Unknown Server |
| BVD | Basic Virtual Disk |
| BW | bandwidth |
| BYOD | bring your own device |
| C&SI | consulting and system integration |
| C/kT | carrier-to-receiver noise density |
| C++ / CPP | C Plus Plus |
| C2A | Click-to-Action |
| C4S | command, control, communications, and computer systems |
| C64/128 | Commodore 64/128 |
| CA | Certificate Authority |
| CaaS | Communications as a Service |
| CAC | Call Admission Control |
| CAD/ CAM | Computer-Aided Design / Manufacturing |
| CAI | Common Air Interface |
| CAL | Client Access License |
| CALEA | Communications Assistance for Law Enforcement Act |
| CAM | Capital Asset Management |
| CAMA | centralized automatic message accounting |
| CAMEL | Customized Application for Mobile networks Enhanced Logic |
| CAN | Campus Area Network |
| CAN-SPAM | Controlling the Assault of Non-Solicited Pornography and |
| CAP | carrierless amplitude phase modulation |
| CAPA | CA Productivity Accelerator |
| CAPE | concurrent art-to-product environment |
| CAPI | Common Application Programming interface |
| caps | capital letters |
| CAPTCHA | Completely Automated Public Turing Test to tell Computers and Humans |
| CAR | committed access rate |
| CARE | Customer Account Record Exchange |
| CAROT | Centralized Automatic Reporting on Trunks |
| CARP | Common Address Redundancy Protocol |
| CART | command and response token |
| CAS | centralized attendant services |
| CASE | computer-aided software engineering |
| CAT | Category (e.g. CAT-5 cable) |
| CAT | Communications Authority of Thailand |
| CAT n | Category n |
| CATI | computer-aided telephone interviewing |
| CATIA | Computer Aided Three-dimensional Interactive Application |
| CATP | Caffeine Access Transport Protocol |
| CATS | Calling Card & Third Number Settlement |
| CATV | community antenna television (or Cable TV system) |
| CAV | Constant Angular Velocity |
| cB | C Beautifier |
| CBC | cipher block chaining |
| CBL | Composite Blocking List |
| CBN | common bonding network |
| CBP | Certifed Biometrics |
| CBQ | Class-Based Queuing |
| CBR | constant bit rate |
| cbr files | Comic Book Archive |
| CBT | Computer Based Training |
| CBWFQ | Class-Based Weighted Fair Queueing |
| cc | carbon copy |
| CC | closed captioning |
| CCA | Citrix Certified Administrator |
| CCAs | composite content applications |
| CCC | Clear Channel Capability |
| CCD | charged coupled device |
| CCD | Charge Coupled Device |
| CCD+ | Cash Concentration and Disbursement plus addenda |
| CCF | call control function |
| CCH | connections per circuit hour |
| CCHIT | Certification Commission for Health Information Technology |
| CCI | controlled cryptographic item |
| CCIE | Cisco Certified Internetwork Expert |
| CCIR | Comite Consultatif International des Radio Communications |
| CCIS | common-channel interoffice signaling |
| CCITT | International Telegraph and Telephone Consultative Committee |
| CCITT (obs.) | Standards organization that has been replaced by ITU-T |
| CCL | Communications Control Language |
| CCNA | Cisco Certified Network Associate |
| ccNSO | Country Code Names Supporting Organization |
| CCOW | Clinical Context Object Workgroup |
| CCP | Certified Computer Professional |
| CCPM | Critical Chain Project Management |
| CCR | channel command retry |
| CCS | Centum Call Seconds |
| CCSA | common control switching arrangement |
| CCSE | Checkpoint Certified Security Expert |
| ccTLD | country code Top-Level Domain |
| CCTV | Closed-Circuit Television |
| CD | compact disc |
| CD | Compact Disc |
| CD Table | change-data table |
| CDB | capacity database |
| CDC | call data channel |
| CDDI | Copper Distributed Data Interface |
| CDE | common desktop environment |
| CDF | Channel Definition Format |
| CDFS | compact disc file system |
| CDFS | compact disc file system |
| CDH | Customer Data Hub |
| CDI | client device identification |
| CDMA | Code Division Multiple Access |
| CDN | content-delivery network |
| CDO | care delivery organization |
| CDP | Cisco Discovery Protocol |
| CDPD | Cellular Digital Packet Data |
| CDR | call detail recording |
| CD-R | Compact Disc - Recordable |
| CD-ROM | compact disc-read-only memory |
| CD-ROM | compact disc read-only memory |
| CD-RW | compact disc-rewritable |
| CD-RW | Compact disc-rewritable |
| CDS | Correlated Double Sampling |
| CDT | C/C++ Development Tools |
| CDV | Cell Delay Variation |
| CE router | Customer edge router |
| CEA | Consumer Electronics Association |
| CEAP | cloud-enabled application platforms |
| CEBP | communication-enabled business process |
| CeCILL | CEA CNRS INRIA Logiciel Libre |
| CEF | Cisco Express Forwarding |
| CEH | Certified Ethical Hacker |
| CEI | Common Event Infrastructure |
| CEIM | Common Enterprise Information Model |
| CELL/B.E. | Cell Broadband Engine |
| cellphone | Cellular Telephone |
| CELP | code-excited linear prediction |
| CEM | customer experience management |
| CEMF | Cisco Element Management Framework |
| CEP | complex event processing |
| CEPS | Common Electronic Purse Standard |
| CER | Corporate Error Reporting |
| CERN | Conseil Europeen pour la Recherche Nucleaire |
| CERT | Computer Emergency Response Team |
| CES | Character Encoding Scheme |
| CES | Consumer Electronics Show |
| CESID | caller’s emergency service identification |
| CEVA | content-enabled vertical application |
| CF | Compact Flash |
| CFA | Circuit Facility Assignment |
| CFA | Color Filter Array |
| CFB | Ciphertext feedback |
| CFM | Code Fragment Manager |
| CFM | Cubic Feet per Minute |
| CfMD | Certified for Microsoft Dynamics |
| CFMN | Client For Microsoft Networks |
| CFV | Call For Votes |
| CG | Computer Graphics |
| CGA | Colour Graphics Adaptor |
| CGI | Common Gateway Interface |
| CGI | Conseillers en Gestion et Informatique (french) |
| CGM | Consumer-generated media |
| CGMP | Cisco Group Multicast Protocol |
| C-GREX | Chaos Game Representation Explorer |
| CHAP | Challenge Handshake Authentication Protocol |
| CHAP | Challenge Handshake Authentication Protocol |
| CHAP | Challenge-Handshake Authentication Protocol (PPP) |
| Charset | character set |
| chat | conversational hypertext access technology |
| CHIPS | Clearing House Interbank Payments System |
| ChR | channel reliability |
| cHTML | Compact Hypertext Markup Language |
| CIA | confidentiality, integrity, and availability |
| CIC | circuit identification code |
| CICS | Customer Information Control System |
| CIDR | Classless Inter Domain Routing |
| CIDR | Classless Inter-Domain Routing |
| CIDR | Classless Internet Domain Routing |
| CIE | Commission Internationale de l’Eclairage |
| CIFS | Common Internet File System |
| CIK | crypto-ignition key |
| CIM | Common Information Model |
| CINDER | Cyber Insider Threat |
| CIO | chief information officer |
| CIP | Common Industrial Protocol |
| CIPA | Children’s Internet Protection Act |
| CiR | circuit reliability |
| CIR | committed information rate |
| CIR | Committed Information Rate (Frame Relay) |
| CIS | clinical information system |
| CISC | Complex Instruction Set Computer |
| CISO | chief information security officer |
| CISSP | Certified Information Systems Security Professional |
| CIX | Commercial Internet Exchange |
| CJK / CJKV | Chinese, Japanese, and Korean (Vietnamese) |
| CKD | count key data |
| CKO | chief knowledge officer |
| CLA | Corporate License Agreement |
| CLASS | Custom Local Area Signaling Services |
| CLEC | Competitive Local Exchange Carrier |
| CLI | Call Level Interface |
| CLI | Calling Line Identification |
| CLI | command line interface |
| CLI | Command line interpreter |
| CLIPS | C Language Integrated Production System |
| CLLI | Common Language Location Identifier |
| CLM | Contract lifecycle management |
| CLNP | ConnectionLess Network Protocol |
| CLOB | character large object |
| CLR | Cell Loss Ratio |
| CLR | common language runtime |
| CLTP | ConnectionLess Transport Protocol |
| CLUSRCVR | cluster-receiver channel |
| CLUSSDR | cluster-sender channel |
| CLUT | Color LookUp Table |
| CLV | Constant Linear Velocity |
| CMA | Circular Mil Area |
| CMC | computer-mediated communication |
| CMDB | configuration management database |
| CME | Common Malware Enumeration |
| CMIP | Common Management Information Protocol |
| CMIS | common management information service |
| CMIS | Content Management Interoperability Services |
| CMM | Capability Maturity Model |
| CMOS | complementary metal-oxide semiconductor |
| CMOS | complementary metal-oxide semiconductor |
| CMOT | CMip Over Tcp |
| CMRR | common-mode rejection ratio |
| CMRS | Commercial Mobile Radio Service |
| CMS | Color management system |
| CMS | content management system |
| CMTS | cable modem termination system |
| CNA | Converged Network Adapter |
| CNAM | Caller ID With Name |
| CNAME | Canonical name |
| CNE | Certified Novell Engineer (also Certified Network Engineer) |
| CNGI | China’s Next Generation Internet |
| CNN | Cable News Network |
| CNN | composite network node |
| CNR | communication network riser |
| CNR | Carrier to Noise Ratio |
| CNR | combat-net radio |
| CO | central office |
| CoA | Care Of Address |
| COAM | customer owned and maintained |
| coax | coaxial (cable) |
| COBIT | Control Objectives for Information and related Technologies |
| COBOL | Common Business Orientated Language |
| COCOMO | COnstructive COst MOdel |
| COD | Call of Duty |
| COD | confirm on delivery |
| COD | Connection Oriented Data |
| CoDA | Context Delivery Architecture |
| CODEC | coder/decoder or compressor-decompressor |
| COE | Component Object modEl |
| COEs | centers of excellence |
| COIN | Community Of Interest Network |
| COLD | computer output to laserdisc |
| colo | co-location |
| COM | communications port |
| COM | Component Object Model |
| COM | computer output to microfiche |
| com (.com) | commercial |
| COM1 | communication port 1 |
| COMDEX | Computer Dealers Expo |
| COMPAQ | COMPatibilty And Quality |
| COMPARE | Compliance Progress and Readiness |
| COMSAT | Communications Satellite Corporation |
| COOL | C++ Object Oriented Language |
| COOP | Continuity of Operations Plan |
| COPPA | Children’s Online Privacy Protection Act |
| COPS | Common Open Policy Service |
| COPS | Communications Outsourcing and Professional Services |
| COR | central outdoor router |
| CORBA | Common Object Request Broker Architecture |
| CORE | COMPARE Operational Readiness Evaluation |
| CORS | Continuously Operating Reference Station |
| CoS | class of service |
| COS | Cloud Optimized Storage |
| COTS | commercial off-the-shelf |
| COW | Copy-On-Write |
| CPA | Cost Per Action |
| CPAN | Comprehensive Perl Archive Network |
| cPanel | control panel |
| CPC | Calling Party Control |
| CPC | Cost Per Click |
| CPE | Customer premises equipment |
| CPF | Cloud Provisioning Fabric |
| cpi | characters per inch |
| CPLD | Complex Programmable Logic Device |
| CPM | corporate performance management |
| CPN | calling party number |
| CPNI | Customer Proprietary Network Information |
| CPOE | Computerized Provider Order Entry |
| CPRM | Content Protection for Removable Media |
| cps | Characters Per Second |
| CPS | Continuous Protection Server |
| CPU | central processing unit |
| CPU | Call Pick Up |
| CPU | Central processing Unit |
| CPU | Critical Patch Update |
| CRACK | Challenge/Response Authentication of Cryptographic Key |
| CRC | Cyclic Redundancy Check |
| CRC | Cyclical redundancy check |
| CRC-16-CCITT | Cyclical redundancy check (X.25, HDLC) |
| CRIMM | continuity-rambus inline memory module |
| CRL | certificate revocation list |
| CRLF | carriage return, line feed |
| CRM | Customer Relationship Management |
| CRMB | Customer Reference Material Database |
| cROI | companywide ROI |
| CRR | Continuous Remote Replication |
| CRT | cathode-ray tube |
| CRT | Cathode Ray Tube |
| CRUD | Create, Read, Update, Delete |
| crypto | Cryptography |
| CS | Computer science |
| CS | Creative Suite |
| CSA | cloud |
| CSA | Communications Streaming Architecture |
| CSA | Composite Services Architecture |
| CSA | service agreements |
| CSC | card security code |
| CSC | Circuit Switched Cellular |
| CSC | Computer Sciences Corporation |
| CSC | Content Security and Control |
| CSCF | call session control function |
| CSCW | computer supported co-operative work |
| CSD | Cisco Secure Desktop |
| CSE | custom search engine |
| Csel | Cable Select |
| CSFs | critical success factors |
| CSG | Communications Services Group |
| CSMA/CA | Carrier sense multiple access / collision avoidance |
| CSMA/CA | Carrier Sense Multiple Access/Collision Avoidance |
| CSMA/CD | Carrier sense multiple access / collision detection |
| CSMA/CD | Carrier Sense Multiple Access with Collision Detection |
| CSO | chief sourcing officer |
| CSO | Cold Start Only |
| CSP | Chip-scale packaging |
| CSP | Communications service providers |
| CSP | Crystal Server Pages |
| CSS | Cascading Style Sheet |
| CSS-P | cascading style sheet positioning |
| CST | Consolidated Service Test |
| CSU | Channel service unit |
| CSU | Certificate Signing Unit |
| CSU | Channel Service Unit |
| CSU/DSU | Channel service unit / data service unit |
| CSV | Circuit Switched Voice |
| CSV | comma separated values |
| CSW | channel status word |
| CT | China Telecom |
| CT | Contone |
| CTCp | Client-To-Client-Protocol |
| CTD | Cell Transfer Delay |
| CTI | computer-telephony integration |
| CTO | chief technology officer |
| CTP | capable to promise |
| CTR | Click-Through Rate |
| ctrl | control |
| CTS | clear to send |
| CTS | common transport semantics |
| CTT | China Tietong Telecommunications |
| CTX | Commited to Excellence |
| CUG | closed user group |
| CUoD | Capacity Upgrade on Demand |
| CUPS | Common Unix Printing System |
| CVP | Content Vectoring Protocol |
| CVS | Computer Vision Syndrome |
| CVS | Concurrent Versions System |
| CVSD | Continuous Variable Slope Delta modulation |
| CVV2 / CVC / CVC2 | Card Verification Value 2 / Card Verification Code /Card |
| CYMK | cyan, magenta, yellow, black |
| D&I | Drop And Insert |
| D2D | disk-to-disk |
| D2D2T | disk-to-disk-to-tape |
| DA | Destination Address |
| DAA | Distributed Application Architecture |
| DaaS | desktops-as-a-service |
| DAB | Digital Audio Broadcast |
| DAC | discretionary access control |
| DAC | digital-to-analog converter |
| DAC / DACL | Discretionary Access Control List |
| DACS | Digital Access and Cross Connect System |
| DAE | Disk Array Enclosure |
| Daemon | Disk And Execution MONitor |
| DAFS | Direct Attached File System |
| DAL | Dedicated Advertiser Location |
| DAM | Database Activity Monitoring |
| DAM | Digital Asset Management |
| DAMA | demand assigned multiple access |
| DAML | DARPA Agent Markup Language |
| DAO | Disk-At-Once |
| DAP | Directory Access Protocol |
| DAR | Data at rest |
| DAR | Disk ARchive |
| DARPA | Defense Advanced Research Project Agency |
| DAS | Dual attachment stations |
| DAS | direct-attached storage |
| DAS | distributed antenna system |
| DASH | Desktop and mobile Architecture for System Hardware |
| DAST | Dynamic Application Security Testing |
| DAT | Digital Audio Tape |
| DAT | digital audio tape |
| DAVID | Digital Audio Video Interactive Decoder |
| DB | Database |
| db | Decibel |
| DB2 | Database 2 |
| DB-25 | serial communications D-shell connector, 25 pins |
| DB-9 | 9 pin D shell connector |
| DB9 | D sub-miniature 9 |
| DBA | database administrator |
| DBCS | Double-Byte Character Set |
| dBm | decibels milliwatt |
| DBMS | Database Management Systems |
| DBMS | Database Management System |
| DBS | direct broadcast satellite |
| DC | direct current |
| DCAP | Data Link Switching Client Access Protocol |
| DCB | Data Center Bridging |
| DCBU | D-channel backup |
| DCC | Data Country Code |
| DCC | Digital Command Control |
| DCC | Direct Client-to-Client |
| DCCP | Datagram Congestion Control Protocol |
| DCE | Data communications equipment |
| DCE | Data communications equipment |
| DCE | Distributed Computing Environment |
| d-channel / D channel | data channel |
| d-channel / D channel | delta channel |
| DCO | Device Configuration Overlay |
| DCOM | Distributed Component Object Model |
| d-commerce | digital commerce |
| DCS | Desktop color separation |
| DCT | Digital Cordless Telephone |
| DDAP | Digital Distribution of Advertising for Publications |
| DDBMS | Distributed database management system |
| DDCMP | Digital Data Communications Message Protocol |
| DDD | Data Display Debugger |
| DDE | Dynamic Data Exchange |
| DDI | Device Driver Interface |
| DDI | Direct Dialling-In |
| DDI | DNS, DHCP & IP address |
| DDL | Data Definition Language |
| DDN | Digital Data Network |
| DDNS | Dynamic Domain Name System |
| DDOS | distributed denial of service |
| DDoS | Distributed Denial of Service |
| DDP | Datagram Delivery Protocol |
| DDP | Datagram Delivery Protocol |
| DDR | double data-rate |
| DDR | double-data-rate |
| DDR RAM | double data-rate random access memory |
| DDR SDRAM | double data-rate synchronous dynamic random access memory |
| DDS | Digital data service |
| DDS | Dataphone digital service |
| DDS | digital data service |
| DDS | Digital Data Storage |
| DDSA | digital data service adapter |
| DDT | Disk-to-Disk-to-Tape |
| DEA | Data Encryption Algorithm |
| DEC | Digital Equipment Corporation |
| DEC (obs.) | Digital Equipment Corporation |
| DECT | Digital Enhanced Cordless Telecommunications |
| defrag | defragment |
| DEK | data encryption key |
| DEL | DELETE |
| Demarc | Demarcation Point |
| Demux | demultiplexer |
| DEN | Directory Enabled Network |
| DEP | Data Execution Prevention |
| DEP | dynamic enterprise publishing |
| DES | Data Encryption Standard |
| DES | Data Encryption Standard (obs. See AES) |
| DES | Dynamic Energy Saver |
| DET | Directory Entry Table |
| DFI | Design for Innovation |
| DFL | design for logistics |
| DFM | design for manufacturability |
| DFM | Device Fault Manager |
| DFM | Digital Flash Media |
| DFS | distributed file system |
| DGC | Distributed garbage collection |
| DHA | directory harvest attack |
| DHCP | dynamic host configuration protocol |
| DHCP | Dynamic Host Configuration Protocol |
| DHTML | Dynamic HyperText Markup Language |
| DHX | Diffie-Hellman Exchange |
| DI/DO | Dispatch In/ Dispatch Out |
| DIA | data integration and access |
| DIA | Dedicated Internet Access |
| DICOM | Digital Imaging and Communications in Medicine |
| DID | direct inward dial |
| DIF | Directory Interoperability Forum |
| DiffServ | Differentiated Services |
| Digerati | digital version of literati (Italian) |
| DIIOp | Dominio Internet Inter-Orb Protocol |
| DIMM | dual inline memory module |
| DIMM | Dual In-line Memory Module |
| DIN | Deutsche Industrie Norm |
| DIP | dual inline package |
| DIP | Dual Interface Poll |
| DIPP | Dual Inline Pin Package |
| DIR | DIRectory |
| Dirid | Directory identifier |
| DISA | Data Interchange Standards Association |
| DISA | Defense Information Systems Agency |
| Disc / Disk | DISKETTE |
| DIT | Directory Information Tree |
| DITTO | Data Interfile Transfer, Testing and Operations |
| Divx | DIgital Video Express |
| DIX | Digital, Intel , Xerox |
| DKI | Driver Kernel Interface |
| DKMS | Dynamic Kernel Module Support |
| DL | Density Line |
| DL | double-layer |
| DLC | Data Link Control |
| DLC | data link control |
| DLC | Digital Loop Carrier |
| DLCI | data link connection identifier |
| DLDP | Device Link Detection Protocol |
| DLE | data link escape |
| DLL | dynamic link library |
| DLM | data life cycle management |
| DLOS | Desktop Line-of-sight |
| DLOS | Direct Line-of-sight |
| DLP | digital light processing |
| DLP | data leak prevention |
| DLP | Digital Light Processing |
| DLPBC | Dual Loop Port Bypass Circuitry |
| DLPI | Data Link Provider Interface |
| DLR | Design Layout Record |
| DLT | digital linear tape |
| DLT | Digital Linear Tape |
| DM | Data Mining |
| DMA | direct memory access |
| DMA | Direct Memory Access |
| DMAA | Discrete Mathematics, Algorithms and Applications |
| DMB | Dhtml Menu Builder |
| DMCA | Digital Millennium Copyright Act |
| DME | distributed management environment |
| DMI | Desktop Management Interface |
| DML | Data Manipulation Language |
| DMO | Distributed Management Object |
| DMS | Digital Multiplex Systems |
| DMT | Discrete Multi-Tone |
| DMZ | demilitarized zone |
| DNA | Digital Network Architecture |
| DNA | Deoxyribonucleic acid |
| DNA | Distributed Network Architecture |
| DNIC | data network identification code |
| DNLC | Directory Name Lookup Cache |
| DNR | Digital Noise Reduction |
| DNS | domain name service or domain name server |
| DNS | Domain Name Service / Server / System |
| DNS | Domain Name System |
| DNSBL | DNS Based List, DNS Blacklist, or DNS Blocklist. |
| DNSSEC | Domain Name System SECurity extensions |
| DOA | Dead On Arrival |
| DoCoMo | Do Communication over the Mobile network |
| DOCSIS | Data-over-Cable Service Interface Specifications |
| DO-IT | Disabilities, Opportunities, Internetworking and Technology |
| Dolly | Digital Dolly |
| DOM | distributed output management |
| DOM | Document Object Model |
| DOMAIN | Distributed Operating Multi Access Interactive Network |
| DOP | Dilution Of Precision |
| DOS | disk operating system or denial of service |
| DoS | denial of service |
| DOS | Disk Operating System |
| DOV | Data-Over-Voice |
| DPA | Document Printing Application |
| DPC | Destination Point Code |
| DPF | Database Partitioning Feature |
| DPI | deep packet inspection |
| DPI | Distributed Protocal Interface |
| dpi | Dots Per Inch |
| DPMA | Dynamic Power Management Architecture |
| DPMI | Dos Protected Mode Interface |
| DPMS | display power management signaling |
| DPN | Data Packet Network |
| DPtoTP | Display Coordinates TO Tablet Coordinates |
| DPV | Distributed Partitioned View |
| DPW | Digital Pulse Wireless |
| DQM | Data Quality Manager |
| DR | disaster recovery |
| DRAC | Dell Remote Assistant Card |
| DRAM | dynamic random access memory |
| DRAM | Dynamic Random Access Memory |
| DRAM | Dynamic random-access memory |
| DRDA | Distributed Relational Database Architecture |
| DRE | Document Rendering Engine |
| DRF | Data Recovery Field |
| DRi | Disaster Recovery Institute |
| DRM | Data Relationship Management |
| DRM | digital rights management |
| DROP | delivery of real-time execution information protocol |
| DRP | Disaster Recovery Plan |
| DRP | Distribution and Replication Protocol |
| DRU | Disc Remastering Utility |
| DRW | Defect Remediation Window |
| DS | Differentiated Service |
| DS0 | Digital Subscriber Level Zero |
| DS1 | Digital Signal Level 1 |
| DSA | Digital Signature Algorithm |
| DSA | Distributed Systems Architecture |
| DSAP | Destination Service Access Point |
| DSBM | Designated Subnet Bandwidth Manager |
| DSE | Directory Services Environment |
| DSI | Dynamic Systems Initiative |
| DSL | digital subscriber line |
| DSL | Digital Subscriber Line |
| DSL | Domain-Specific Language |
| DSL | Dual Stress Liner |
| DSLAM | Digital Subscriber Line Access Multiplexor |
| DSLAM | DSL Access Multiplexer |
| DSM | dependency structure matrix |
| DSM-CC | Digital storage media command and control |
| DSML | Directory Service Markup Language |
| DSN | dealer software network |
| DSn | digital signal level n |
| DSO | data source object |
| DSOM | Distributed System Object Model |
| DSP | digital signal processor |
| DSR | Data Set Ready |
| DSR | Dynamic Source Routing |
| DSS | igital Signature Standard |
| DSSA | Distributed System Security Architecture |
| DSSS | Direct Sequence Spread Spectrum |
| DSTN | Double-layer Supertwist Nematic |
| DSTP | Data Space Transfer Protocol |
| DSU | Digital service unit |
| DSU | data service unit |
| DSU | Digital Service Unit |
| DSVD | Digital Simultaneous Voice and Data |
| DSX | Digital System Cross-connect frame |
| DTD | Document Type Definition |
| DTD | Document Type Definition |
| DTDS | Disaster Tolerant Disk Systems |
| DTE | Data terminal equipment |
| DTE | Data Terminal Equipment |
| DTM | Document Table Model |
| DTM | Dynamic synchronous Transfer Mode |
| DTMF | Data Tone Multiple Frequency |
| DTML | Document Template Mark-up Language |
| DTN | Disruption Tolerant Networking |
| DTP | Desktop publishing |
| DTR | Data Terminal Ready |
| DTS | Digital Theater System |
| DTTV | Digital Terestial Televison |
| du | disk usage |
| DUAL | Diffusing Update Algorithm |
| DUL | Dial Up List |
| DUN | Dial up networking |
| DUN | Dial-Up Networking |
| DUNS | Data Universal Numbering System |
| DUOW / DUW | distributed unit of work |
| DUPS | Digital Unbundled Port Services |
| DUV | Data Under Voice |
| DVB-H | Digital Video Broadcasting - Handhelds |
| DVBMHP | Digital Video Broadcasting Multimedia Home Platform |
| DVB-SH | Digital Video Broadcasting - Satellite services to Handhelds |
| DVCD | Double Video CD |
| DVD | digital video disc or digital versatile disc |
| DVD | Digital Versatile Disc |
| DVD-R | digital video disc-recordable |
| DVD-RAM | digital video disc-random access memory |
| DVD-ROM | digital video disc-read only memory |
| DVD-RW | digital video disc-rewritable |
| DVI | digital visual interface |
| DVI | Digital Video Interface, originally Digital Video Disc |
| DVM | Digital volt meter |
| DVMRP | Distance Vector Multicast Routing Protocol |
| DVRs | Digital video/Versatile recorders |
| DWDM | dense wave division multiplexing |
| DWF | Design Web Format |
| DWM | Desktop Windows Manager |
| DWS | Dialable Wideband Service |
| DX | DirectX / Direct X |
| dxdiag | directx diagnostics |
| DXF | Drawing Interchange Format |
| DXI | Data Exchange Interface |
| dyld | dynamic link editor |
| e- | Electronic |
| E Phone | Emergency Phones. |
| E&M | recEive and transMit (or ear and mouth) |
| E_D_TOV | error detect timeout value |
| E2E | End-to-End |
| E3 | Electronic Entertainment Expo |
| EA | Electronic Arts |
| EA | Enterprise Agreement |
| EAB | Enterprise Address Book |
| EAI | Enterprise application integration |
| EAL | Evaluation Assurance Level |
| EAM | Event Aggregation Module |
| EAP | Extensible Authentication Protocol |
| EAR | Emergency Assistance Request |
| EARL | Enhanced Address Recognition Logic |
| EAS | enterprise application server |
| EASDAQ | European Association of Securities Dealers Automated Quotations |
| EAT | End Around Test |
| EAX | Environmental Audio |
| EB | Exabyte |
| EBCDIC | Extended Binary Coded Decimal Interchange Code |
| EBIF | Enhanced TV Binary Interchange Format |
| EBML | Extensible Binary Meta Language |
| EBPP | Electronic Bill Presentation and Payment |
| EBS | E-Business Suite |
| EC2 | Elastic Compute Cloud |
| ECB | electronic code book |
| ECB | Event Control Block |
| ECC | error correction code |
| ECC | elliptic curve cryptography |
| ECC | Error Checking and Correction |
| ECEM | enterprise carbon and energy management |
| ECHS | Extended Cylinders, Heads, Sectors |
| eCI | eCommerce integrator |
| ECM | Enterprise content management |
| ECMA | European Computer Manufacturers Association |
| ECMP | Equal Cost Multipath Routing |
| ECO | Engineering Change Order |
| ECP | extended capabilities port |
| ECP | electronic check presentment |
| ECS | Extended Character Set |
| ECTF | Enterprise Computer Telephony Forum |
| ED2K | eDonkey2000 |
| EDA | event-driven architecture |
| EDC | Electronic Data Capture |
| EDC | electronic dispersion compensation |
| EDGE | Enhanced Data Rates for GSM Evolution |
| EDI | electronic data interchange |
| EDIFACT | Electronic Data Interchange For Administration, Commerce and Transport |
| e-discovery | Electronic discovery |
| EDM | Electronic Document Management |
| EDM | EMC Data Manager |
| EDO | Extended Data Output |
| edress | e-mail address |
| EDS | Electronic Data Systems |
| EDW | enterprise data warehouse |
| EEPROM | electrically erasable programmable read-only memory |
| EEPROM /EPROM | Electrical Erasable Programmable Read Only Memory |
| EF | Expedited Forwarding |
| EFI | Extensible Firmware Interface |
| EFM | Enterprise fraud and misuse management |
| EFS | encrypting file system |
| EFS | Encrypting File System |
| EFS | Error Free Seconds |
| EFT | Electronic Funds Transfer |
| EGA | Enhanced Graphics Adapter |
| EGL | Enterprise Generation Language |
| EGNOS | European Geostationary Navigation Overlay Service |
| EGP | Exterior Gateway Protocol |
| EGP | Exterior Gateway Protocol |
| EH&S | Environmental, Health and Safety |
| EHA | Ethernet Hardware Address |
| EHA | Ethernet Hardware Address (MAC address) |
| EHR | Electronic Health Record |
| EIA | Electronic Industries Association |
| EIA | Electronic Industries Alliance |
| EIA | Electronics Industry Alliance |
| EIA | enterprise information architecture |
| EIDE | enhanced integrated drive electronics |
| EIGRP | Enhanced Interior Gateway Routing Protocol |
| EII | enterprise integration information |
| EIM | Enterprise Identity Mapping |
| EIM | enterprise information management |
| EIRP | Effective Isotropic Radiated Power |
| EIS | enterprise information system |
| EISA | extended industry standard architecture |
| EIST | Enhanced Intel SpeedStep Technology |
| EJB | Enterprise JavaBeans |
| EKTS | electronic key telephone set |
| ELAN | Emulated Local Area Network |
| ELM | Expertise location and management |
| ELT | extract, load, and transform |
| EMA | Enterprise Management Associates |
| EMC | Electromagnetic Compatibility |
| EMF | ElectroMagnetic Field |
| EMF | ElectroMotive Force |
| EMI | electromagnetic interference |
| EMI | Electromagnetic interference |
| EMI | Enhanced Multilayer Image |
| EMOTICON | EMOTion ICON |
| EMP | electromagnetic pulse |
| EMPI | Enterprise Master Patient Index |
| EMR | electronic medical record |
| EMS | Enhanced Messaging Service |
| EMS | enterprise messaging system |
| EMS | Expanded Memory Specification |
| EMV | Europay-MasterCard-Visa |
| ENIW | Web-enabled Ethernet Networking Interface |
| ENQ | Enquiry |
| ENS | enterprise nervous system |
| ENTL | Electronic New Hire/Termination/Leave of Absence |
| ENUM | electronic numbering / Electronic Number Mapping system |
| ENX | European Network Exchange |
| EOF | End Of Frame (HDLC, etc.) |
| EOF | end-of-file |
| EOL | End Of Life |
| EoS / EoSDH | Ethernet over SONET / Ethernet Over SDH |
| EPABX | Electronic Private Automatic Branch Exchange |
| e-paper | Electronic paper |
| ePC | electronic product code |
| EPG(s) | electronic program guides |
| EPGs | electronic program guides |
| EPIC | Explicitly Parallel Instruction Computing |
| EPL | Ethernet Private Line |
| EPM | Enterprise Performance Management |
| EPN | Extended Port Network |
| EPO | emergency power off |
| ePO | EPolicy Orchestrator |
| EPOC | Electronic Piece of Cheese |
| EPP | enhanced parallel port |
| EPP | Enhanced Parallel Port |
| EPP | Enterprise Portal Platform |
| EPR | Electronic Patient Record |
| EPR | EndPoint Reference |
| EPROM | erasable programmable read-only memory |
| EPS | Encapsulated PostScript |
| EPS | Events Per Second |
| EPU | Energy Processing Unit |
| ERD | emergency repair disk |
| ERL | Echo Return Loss |
| ERMS | electronic records management systems |
| ERP | Enterprise resource planning |
| ERP | error recovery procedure |
| ERR | ERRor |
| eRX | e-Prescribing |
| ESA | Enthusiast System Architecture |
| ESB | enterprise service bus |
| ESCD | Extended System Configuration Data |
| ESCON | Enterprise Systems Connection |
| ESD | electrostatic discharge |
| ESDI | enhanced small device interface |
| ESDI | Enhanced Small Device Interface |
| ESE | Extensible Storage Engine |
| ESF | Extended Superframe Format |
| ESG | Enterprise Strategy Group |
| ESI | Edge Side Include |
| ES-IS | End System to Intermediate System |
| ESL | electronic shelf labels |
| ESM | Enterprise Security Manager |
| ESM | Enterprise Service Management |
| ESN | electronic serial number |
| ESP | Encapsulated Security Payload |
| ESP | estimated street price |
| ESPN | Entertainment and Sports Programming Network |
| ESRB | Entertainment Software Rating Board |
| ESS | employee self-service |
| ESS | Extended Service Set |
| ESS | Extended service set (Wi-Fi group) |
| ETA | Embedded Transport Acceleration |
| ETAS | Encrypted Transaction Audit System |
| ETC | Enhanced Throughput Cellular |
| etc | Essential Text Configuration |
| ETL | Extract, Transform and Load |
| ETN | electronic tandem network |
| ETRN | Extended Turn |
| ETSI | European Telecommunications Standardisation Institute |
| ETTb/ETTh | Ethernet To The Business/Home |
| ETX | end-of-text character |
| EUC | Extended UNIX Code |
| EUEM | end user experience monitoring |
| EULA | End-User License Agreement |
| EUP | Enterprise Unified Process |
| Eutelsat | European Telecommunications Satellite Organization |
| EVA | Enterprise Virtual Array |
| EVDO | evolution data optimized or evolution data only |
| EVDO | Evolution Data Only/Evolution Data Optimized |
| EVGA | extended video graphics adapter/array |
| EWS | Early Warning Status |
| EX | exchange |
| EXE | EXEcutable |
| EXIF | EXchangeable Image File format |
| FA | Foreign Agent |
| FACCH | Fast Associated Control Channel |
| FAN | File Area Network |
| FAQ | Frequently Asked Questions |
| FAR | false acceptance rate |
| FARE | Film Automatic Retouching and Enhancement |
| FASS | Fast Access Station Switching |
| FAST | Federation Against Software Theft |
| FAST | File And Settings Transfer |
| FAT | file allocation table |
| FAT | file allocation table |
| FAT12 | 12-bit file allocation table |
| FAT16 | 16-bit file allocation table |
| FAT32 | 32-bit file allocation table |
| favicon | favorites icon |
| FAW | Frame Alignment Word |
| FAX | FACSimile |
| FBA | fixed-block architecture |
| FBD | Fully Buffered DIMM |
| FBGA | Fine-pitch Ball Grid Array |
| FBSS | Fast Base Station Switching |
| FC / FCS | Fibre Channel (Standard) |
| FC-AL | Fibre Channel Arbitrated Loop |
| FCC | Federal Communications Commission |
| FCC | Federal Communications Commission (US) |
| FCCH | Frequency Correction Channel |
| FCD | Floating car data or floating cellular data |
| FCH | Frame Control Header |
| FCIP | Fibre Channel over Internet Protocol |
| FCL | Framework Class Library |
| FCoE | Fibre Channel over Ethernet |
| FCP | Fibre Channel Protocol |
| FCPGA | Flip Chip Pin Grid Array |
| FCS | Fluorescence Correlation Spectroscopy |
| FCS | Frame Check Sequence |
| FCS | Frame check sequence (Ethernet) |
| FCSI | Fibre Channel Systems Initiative |
| FDD | floppy disk drive |
| FDD | Frequency Division Duplex |
| FDDI | Fiber Distributed Data Interface |
| FDDI | Fiber Distributed Data Interface |
| FDE | Full-disk encryption |
| FDM | Feature Download Management |
| FDM | Frequency Division Multiplexing |
| FDM | fused deposition modeling |
| FDS | Fraud Detection System |
| FDX | Full Duplex |
| FE | Fast Ethernet |
| FE | field engineer |
| FEC | Fast Etherchannel |
| FEC | Forward Error Correction |
| FECN | Forward Explicit Congestion Notification |
| FEFO | First Ended, First Out |
| FEMA | Failure mode and effects analysis |
| FEP | Front-End Processor |
| FER | Frame Erasure/Error Rate |
| FERPA | Family Educational Rights and Privacy Act |
| FERPA | Family Educational Rights and Privacy Act |
| FET | field effect transistor |
| FEXT | Far End Cross Talk |
| FFD | Flicker Free Display |
| FFPF | fairly fast packet filter |
| FFT | Fast Fourier Transform |
| FGA/B/C/D | feature group A/B/C/D |
| FHS | Fan Heat-Sink |
| FHSS | Frequency Hopped Spread Spectrum |
| FICON | Fiber Connection |
| FIDNET | Federal Intrusion Detection Network |
| FIFO | first in, first out |
| FIGS | Figures Shift |
| FIM | federated identity management |
| FINDDEST | Find Destination |
| FINRA | Financial Industry Regulatory Authority |
| FiOS | Fiber Optic Service |
| FIPS | Federal Information Processing Standards |
| FIR | Finite Impulse Response |
| FIRST | Forum of Incident Response and Security Teams |
| FISMA | Federal Information Security Management Act |
| FIX | Financial Information Exchange |
| FLAC | Free Lossless Audio Codec |
| FLAG | Fiber Link Around the Globe |
| FLOGI | fabric login |
| FLOPS | Floating Point Operations Per Second |
| FM | Frequency Modulation |
| FM-200 | Firemaster / Fire Master 200 |
| FMA99 | Financial Services Modernization Act of 1999 |
| FMC | fixed-mobile convergence |
| FMEA | Failure Mode and Effects Analysis |
| FMH | function management header |
| FMV | Full-Motion Video |
| Fn | Function (referring to the function key on a laptop) |
| FOC | Field Oriented Control |
| FoIP | Fax Over Internet Protocol |
| FOIRL | FiberOptic InterRepeater Link |
| FOMA | Freedom of Mobile Multimedia Access |
| FOP | Formatting Objects Processor |
| FORTRAN | formula translation |
| FOSS | Free and open source software |
| FOSSIL | Fido Opus Seadog Standard Interface Layer |
| FOT | Fiber Optic Terminal |
| FOTS | Fiber Optic Transmission System |
| FPA | Floating Point Accelerator |
| FPA | Function point analysis |
| FPE | Forefront Protection for Exchange |
| FPGA | Field Programmable Gate Array |
| FPM | fast page-mode |
| FPM | Fast Page Mode |
| FpML | Financial Products Markup Language |
| FPP | Full Product Package |
| FPS | Flexible Payments Service |
| FPS | frames per second |
| FPU | floating point unit |
| FQDN | fully qualified domain name |
| FQDN | Fully Qualified Domain Name |
| FR | frame relay |
| FRAD | Frame Relay Access Device |
| FRAG (21) | Financial Reporting & Auditing Group Guidelines |
| FRDS | Failure Resistant Data Systems |
| FRED | Fair Random Early Detection |
| FreeBSD | Free Berkeley Software Distribution |
| freeware | free software |
| FRR | fast retransmit and recovery |
| FRS | File Replication Service |
| FRU | field replaceable unit |
| FRU | field-replaceable unit |
| FSAA | Full Screen Anti-Aliasing |
| FSAM | Federated Storage Area Management |
| FSB | frontside bus |
| FSM | finite state machine |
| FSML | Financial Services Markup Language |
| FSMO | Flexible Single Master Operations |
| FSN | Full-Service Network |
| FSPF | fibre channel shortest path first |
| FSS | File system server |
| FSSS | Fast Serving Station Switching |
| FSTC | Financial Services Technology Consortium |
| FT | P file transfer protocol |
| FTA | failure to acquire |
| FTAM | File Transfer Access and Management |
| FTAM | File Transfer, Access, and Management |
| FTBFS | Fails To Build From Source |
| FTDS | Failure Tolerant Data Systems |
| FTL | Flash Translation Laye |
| FTNS | Fixed Telecommunication Network Services |
| FTP | File Transport Protocol |
| FTP | File Transfer Protocol |
| FTTB | Fiber to the building |
| FTTN | Fiber to the neighborhood |
| FUD | Fear, Uncertainty, and Doubt |
| FUSC | Fully Used SubChannel |
| FW | Firewall |
| FWA | Fixed wireless access |
| FX | foreign exchange |
| FXO | Foreign Exchange Office |
| FXP | File eXchange Protocol |
| FXP | Foreign Exchange Protocol |
| FXP | fxp |
| FXS | Foreign Exchange Station |
| G | giga |
| G2C | Government to Citizen |
| GAIA | GUI Application Interoperability Architecture |
| GAMS | General Algebraic Modeling System |
| GAP | Groups, Algorithms and Programming |
| GAPE | Google Apps Premier Edition |
| GARP | Generic Address Resolution Protocol |
| Gas | GNU Assembler |
| GB | gigabyte |
| gb | Giga bit |
| GB | Gigabyte |
| GBIC | Gigabit interface converter |
| GBP | group buffer pool |
| Gbps | Gigabit per second |
| Gbps | gigabits per second |
| GCC | GNU Compiler Collection |
| GCD | Grand Central Dispatch |
| GCG | Grey Component Replacement |
| GCGID | graphic character global identifier |
| GCI | General Communication Inc. |
| GD&T | geometric dimensioning and tolerancing |
| GDB | GNU debugger |
| GDI | graphics device interface |
| GDI | Graphics Device Interface |
| GDM | global delivery model |
| GDP | Gateway Discovery Protocol |
| GDPS | Geographically Dispersed Parallel Sysplex |
| GDS | Global data synchronization |
| GDSN | Global Data Synchronization Network |
| GDTs | Global data types |
| GEAR | Gigabyte Enhanced Agp Riser |
| GEDCOM | GEnealogical Data COMmunication |
| GEMMS | Global Enterprise Manufacturing Management System |
| GEnie | General Electric Network for Information Exchange |
| GEO / GEOS | Geo-Stationary Earth Orbit System |
| GEOS | graphic environment operating system |
| GEPOF | Gigabit Ethernet (over) Plastic Optical Fiber |
| GERAN | GSM(GPRS)/EDGE Radio Access Network |
| gfortran | GNU Fortran compiler |
| GFP | Generic Framing Procedure |
| GFS | Grandfather, Father, Son |
| GGP | Gateway-gateway protocol |
| GGSN | Gateway GPRS Support Node |
| GHC | Glasgow Haskell Compiler |
| Ghost | General Hardware-Oriented Software Transfer |
| GHz | gigahertz |
| GIAC | Global Information Assurance Certification |
| GiB / gib | gibibyte |
| GID | group identification number |
| GIF | Graphic Interchange Format |
| GIFT | GNU Image Finding Tool |
| GIGO | Garbage In, Garbage Out. |
| GIMP | Gnu Image Manipulation Program |
| GINA | Graphical Identification and Authentication |
| GINI | Gateway Interface for Network Initialization |
| GIOP | General Inter-ORB Protocol |
| GIS | Geographical Information System |
| GIX | Global Internet eXchange |
| GKTMP | Gatekeeper Transaction Message Protocol |
| GLA | Generic Log Adapter |
| GLB / GLBA | Gramm-Leach-Bliley (Act) |
| GLONASS | Global Navigational Satellite System |
| GLPK | GNU Linear Programming Kit |
| GLUT | openGL Utility Toolkit |
| GMA | Gmail Drive |
| GMM | GPRS Mobility Management |
| GMR | Giant Magneto Resistance |
| GMRP | Garp Multicast Registration Protocol |
| GMRS | General Mobile Radio Service |
| GMS | General MIDIStandard |
| GMS | generalized main scheduling |
| GMS | Global Messaging Service |
| GMS | Google Message Security |
| GMSK | Gaussian Minimum Shift Keying |
| GMX | Global Mail eXchange, in Germany: Global Message eXchange |
| GNAT | GNU NYU Ada Translator |
| GNN | Global Network Navigator |
| GNOME | GNU Network Object Model Environment |
| GNSO | Generic Names Supporting Organization |
| GNU | GNU’s not Unix |
| GOCA | Graphic Object Content Architecture |
| GOLC | Growth Opportunity License Charge |
| GOMS | Goals, Operators, Methods, and Selection rules |
| GOPS | Giga (billion) Operations Per Second |
| GOS | Grade of Service |
| GOSIP | Government OSI Profile |
| GOW | Gears of War |
| GOW | God of War |
| GPF | General Protection Fault |
| GPIO | general-purpose I/O |
| GPL | General Public License |
| GPO | Group Policy Object |
| GPRS | general packet radio system |
| GPRS | general packet radio service |
| GPS | Global Positioning System |
| GPS | GNAT Programming Studio |
| GPSL | General Purpose Scripting Language |
| GPSS | General Purpose Simulation System |
| GPU | Graphics Processing Unit |
| GPWW | group practice without walls |
| GRC | governance, risk and compliance |
| GRC.SQ | Governance, Risk Management, Compliance, Security, and Data Quality |
| GRCM | GRC management |
| GRE | generic routing encapsulation |
| grep | global-regular-expression-print |
| GROW | GNU Remote Operations Web |
| GRT | Granular Recovery Technology |
| GSAM | generalized sequential access method |
| GSC | Gecko System Connect |
| GSI | Gigascale Integration |
| GSK | Global Security Kit |
| GSM | global system for mobile communications |
| GSM | Global System for Mobile communication |
| GSO | global sign-on |
| GSR | Gigabit Switch Router |
| GTL | Gunning Transceiver Logic |
| GTM | global trade management |
| GTM | Global Traffic Manager |
| GTP | GPRS Tunneling Protocol |
| GTS | Generic Traffic Shaping |
| GTT | Global Title Translation |
| GUA | graphical user authentication |
| GUI | graphical user interface |
| GUI | Graphical User Interface |
| GUID | Globally Unique Identifier |
| GUTBN | Globally Unique Time Based Number |
| GVN | Global value numbering |
| GVPN | Global Virtual Network Service |
| GVRP | Generic VLANResolution Protocol |
| GVU | Graphic, Visualization, and Usability |
| GWEN | Ground Wave Emergency Network |
| GWT | Google Web Toolkit |
| GXA | Global XML Web Services Architecture |
| GXS | Global exchange services |
| gzip | GNU zip |
| H&H | Hoot & Holler |
| H/S LAN | High-Speed Local-Area Network |
| H3C | (previous) Huawei Technologies - 3Com |
| HA | high availability |
| HAAT | Height Above Average Terrain |
| HACMP | High-Availability Cluster Multi-Processing |
| Hactivism | from ‘hack’ and ‘activism’ |
| HAD | Holographic Autostereoscopic Display |
| HADR | high availability disaster recovery |
| HAE | Height Above Ellipsoid |
| HAL | hardware abstraction layer |
| HAL | Hardware Abstraction Layer |
| HAN | home area network |
| HARC | Hitachi Asynchronous Remote Copy |
| HARQ | Hybrid Automatic Repeat reQuest |
| HASP | Houston Automatic Spooling Program |
| HAT | Heap Analysis Tool |
| HAVi | Home Audio Video interoperability |
| HBA | host bus adapter |
| HCI | Host Controller Interface |
| HCI | Human-Computer Interaction |
| HCL | hardware compatibility list |
| HCL | Hardware Compatibility List |
| HCM | human capital management |
| HCO | High-Capacity Optical |
| HCR | Huffman Codeword Reordering |
| HCT | hardware compatibility tests |
| HD / HDD | Hard Disk Drive |
| HD DVD | high-density DVD |
| HDA | Head Disk Assembly |
| HDCP | High-bandwidth Digital Content Protection |
| HDD | hard disk drive |
| HDLC | High Level Data Link Control |
| HDLC | High-level Data Link Control |
| HDMi | high definition media interface |
| HDMI | High-Definition Multimedia Interface |
| HDML | Handheld Device Markup Language |
| HDR | header label |
| HDR | High-dynamic-range imaging or High-dynamic-range rendering |
| HDR | host-discovered resource |
| HDS | Hitachi Data Systems |
| HDSL | High bit-rate Digital Subscriber Line |
| HDTP | Handheld Device Transport Protocol |
| HDTV | High Definition television |
| HDx / HD | Half duplex |
| HE-AAC | High Efficiency Advanced Audio Coding |
| HEC | Header Error Control |
| HEL | Hardware Emulation Layer |
| HEP | horizontal enterprise portal |
| HERF | high energy radio frequency |
| HFC | Hybrid Fiber Coax |
| HFS | Hierarchical File System |
| HFS+ | Hierarchical File System Plus |
| HGFS | Host-Guest File System |
| HGML | Hypertext General Markup Language |
| HHO | Hard Hand Off |
| HHT | Hand-Held Terminal |
| HID | High-Intensity Discharge |
| HID | Human Interface Device |
| HIDAM | hierarchical indexed direct access method |
| HIDS | Host based Intrusion Detection System |
| HiFD | HIgh-capacity Floppy Disk |
| HighMAT | High-performance Media Access Technology |
| HIL | Hardware-in-the-Loop |
| HIMEM | HIgh MEMory |
| HIP | Host Identity Protocol |
| HIPAA | Health Insurance Portability and Accountability Act |
| HiPerLinks | High-Performance Links |
| Hiperspace | High-Performance Space |
| HIPPI | HIgh Performance Parallel Interface |
| HIS | healthcare information system |
| HISAM | hierarchical indexed sequential access method |
| HITECH | Health Information for Economic and Clinical Health |
| HIToolbox | Human Interface Toolbox |
| HKCC | HKey_Current_Config |
| HKLM | HKey_Local_Machine |
| HL7 | Health Level 7 |
| HLA | High Level Architecture |
| HLLAPI | High Level Language Application Programming Interface |
| HLR | Home Location Register |
| HMA | High Memory Area |
| HMD | Head Mounted Display |
| h-menu | Hierarchical menu |
| HMP | Hybrid Multiprocessing |
| Honeynet | A network of honeypots. |
| HOSED | Hardware Or Software Error Detected |
| HP | Hewlett-Packard |
| HP | HoneyPot |
| HPA | High Performance Addressing |
| HPB | High Ping Bastard |
| HPC | High Performance Computing |
| HPF | High Pass Filter |
| HPFS | high performance file system |
| HPFS | High Performance File System |
| HPGL | Hewlett-Packard Graphics Language |
| HPIB | Hewlett Packard Interface Bus |
| HPNA | Home Phoneline Networking Alliance |
| HPR | High-Performance Routing |
| HR | horizontal rule |
| HR/DSSS | High Rate/Direct Sequence Spread Spectrum Physical Layer |
| HRAA | High Resolution Anti Aliasing |
| HRC | Hitachi Remote Copy |
| HRMS | human resource management system |
| HRPD | High Rate Packet Data |
| HSB / HSV | Hue, Saturation, Brightness (or Value) |
| HSCSD | High Speed Circuit Switched Data |
| HSD | High Speed Data |
| HSDPA | High-Speed Downlink Packet Access |
| HSF | Heat Sink Fan |
| HSF | High Sierra Format |
| HSIL | Host Side Igmp Library |
| HSM | Hardware Security Module |
| HSM | Hierarchical storage management |
| HSO | Hot Spot Operator |
| HSR | Horizontal Scan Rate |
| HSRP | Hot Standby Router Protocol |
| HSS | Home Subscriber Service |
| HSSDC | High Speed Serial Direct Connect |
| HSSI | High Speed Serial Interface |
| HSUPA | High-Speed Uplink Packet Access |
| HT | Hyper-Threading |
| HT | HyperTransport |
| HTC | formerly High Tech Computer Corporation |
| HTML | hypertext markup language |
| HTML or HTM | HyperText Markup Language |
| HTML5 | HyperText Markup Language 5 |
| HTT | Hyper-Threading Technology |
| HTTP | hypertext transfer protocol |
| HTTP | HyperText Transfer Protocol |
| HTTP | HyperText Transport Protocol |
| HTTPS | hypertext transfer protocol over secure sockets layer |
| HTTPS | HTTP over SSL |
| HTTPS | HyperText Transfer Protocol Secure |
| HTTPS | Secured HTTP or HTTP Secure |
| HUD | Head Up Display |
| HURSE | Hasp Unit Record SErvice |
| HWS | high watermark setup |
| HXRC | Hitachi Extended Remote Copy |
| Hz | hertz |
| I/O | input/output |
| I/O | Input/Output |
| I2 | Internet2 |
| I2C | Inter-Integrated Circuit |
| I²C | Inter-Integrated Circuit |
| IA-32/64 | Intel Architecture - 32/64 |
| IaaS | integration as a service |
| IAB | Internet Architecture Board |
| IAB | Internet Architecture Board (previous Internet Activities Board) |
| IAD | integrated access device |
| IAM | Identity and Access Management |
| iAMT | Intel Active Management Technology |
| IANA | Internet Assigned Numbers Authority |
| IANA | Internet Assigned Number Authority |
| IANA | Internet Assigned Numbers Authority |
| IAP | Internet Access Provider |
| IAS | Internet Authentication Service |
| IAT | Inside Air Temperature |
| IB | Interface Bus |
| IBG | interblock gap |
| IBM | International Business Machines |
| IBO | industry business unit |
| IBR | intelligent browser referencing |
| IBSG | Internet Banking System Group |
| IBSG | Internet Business Solutions Group |
| IBT | IntelliLight Broadband Transport |
| IBT | Internet Based Training |
| IC | I see |
| IC | Integrated Circuit |
| ICA | Independent Computing Architecture |
| ICA | International Compliance Association |
| ICANN | Internet Corporation For Assigned Names and Numbers |
| ICC | Internet Commerce Corporation |
| ICCs | integration competency centers |
| ICDL | International Computer Driving Licence |
| ICE | in-circuit emulator |
| ICE | information and content exchange |
| ICE | Interactive Connectivity Establishment |
| ICF | Internet Connection Firewall |
| ICI | Information-centric infrastructure |
| ICI | Interexchange Carrier Interface |
| ICM | incentive compensation management |
| ICMP | internet control message protocol |
| ICMP | Internet Control Message Protocol |
| ICMS | incentive compensation management system |
| ICP | Internet Content Provider |
| ICPP | Intel Channel Partner Program |
| ICQ | I Seek You |
| ICR | intelligent character recognition |
| ICRA | Internet Content Rating Association |
| ICS | internet connection sharing |
| ICS | Incremental Change Synchronization |
| ICS | Internet Connection Sharing |
| ICSA | International Computer Security Association |
| ICSI | Institute for Clinical Systems Improvement |
| ICT | information and communication technology |
| ICU | International Components for Unicode |
| ID | identifier |
| IDA | (Verizon) Internet Dedicated Access |
| IDARS | integrated document archive and retrieval system |
| IDC | Internet data center |
| IDD | international direct dial / dialing |
| IDE | integrated drive electronics |
| IDE | Integrated Development Environment |
| IDE | integrated drive electronics |
| IDEA | International Data Encryption Algorithm |
| I-DEAS | Integrated-Design Engineering Analysis Software |
| IDEMA | International Disk drive Equipment and Materials Association |
| iDEN | integrated digital enhanced network |
| IDF | Intermediate distribution frame |
| IDIM | Identity Information Management |
| IDIOT | Intrusion Detection In Our Time |
| IDIQ | indefinite delivery/indefinite quantity; |
| IDL | Interface Definition Language |
| IDM | Internet Download Manager |
| IDOL | Intelligent Data Operating Layer |
| IDOM | integrated document and output management |
| IDQ | Informatica Data Quality |
| IDR | Intelligent Disaster Recovery |
| IDS | Intrusion Detection System |
| IDT | (originally) International Discount Telecommunications |
| iDTV | Interactive digital television |
| IDU | interface data unit |
| IE | Internet Explorer |
| IEC | Commission Electrotechnique Internationale (French) |
| IEC | Inter-exchange Carrier |
| IEC | International Electrotechnical Commission |
| IEE | Institution of Electrical Engineers |
| IEEE | Institute of Electrical and Electronics Engineers |
| IEEE | Institute for Electrical and Electronic Engineers |
| IEEE | Institute of Electrical and Electronics Engineers |
| IES | Integrated Environmental Solutions |
| IETF | Internet Engineering Task Force |
| IETF | Internet Engineering Task Force |
| IFB | Internet Free/Busy |
| iFCP | Internet Fibre Channel Protocol |
| IFL | Integrated Facility for Linux |
| iFrame | inline frame |
| IFRS | International Financial Reporting Standards |
| IGF | Internet Governance Forum |
| IGMP | Internet Group Management Protocol |
| IGMP | Internet Group Management Protocol |
| IGP | interior gateway protocol |
| IGRP | Interior Gateway Routing Protocol |
| IGS | IBM Global Services |
| IHS | Integrated Heat Spreader |
| IHV | Independent hardware vendor |
| IIOP | Internet Inter-ORB Protocol |
| IIS | Internet Information Services |
| IIS | Internet Information Server |
| IKE | Internet Key Exchange |
| ILEC | Independent Local Exchange Carrier |
| ILEs | Immersive learning environments |
| ILM | IBM License Manager |
| ILM | Information Lifecycle Management |
| iLO | Integrated Lights-Out |
| ILP | initial loader program |
| IM | Identity Management |
| IM | Instant Messaging |
| IMAC | installations, moves, adds and changes |
| IMAP | internet mail access protocol |
| IMAP | Internet Message Access Protocol |
| IMAP4 | Internet Mail Access Protocol version 4 |
| IMAPI | Image Mastering Application Programming Interface |
| IMC | Intelligent Management Center |
| IMC | Internet Mail Consortium |
| IME | Input Method Editor |
| IMEI | International Mobile Equipment Identifier |
| IMS | Information Management System |
| IMS | IP multimedia systems |
| IMSI | International Mobile Subscriber Identity |
| IMUX | Inverse Multiplexer |
| INAP | Intelligent Network Application Protocol |
| INC | International Network of Crackers |
| InfoSec | Information Security |
| INI file | initialization file |
| Inmarsat | International Maritime Satellite Organization |
| INTAP | Interoperability Technology Association for Information Processing |
| Intel | INTegrated ELectronics |
| InterNIC | Internet Network Information Center |
| IOA | input/output adapter |
| IOCA | Image Object Content Architecture |
| IOD | in-order delivery |
| iODBC | Independent Open DataBase Connectivity |
| IOM | Integrated Object Model |
| IONL | Internal Organization of the Network Layer |
| IOP | Interoperability |
| IOPS | Input/Output operations per second |
| IOS | international operator services (IOS Telecom) |
| IoS | Internet over Satellite |
| IOS | Internetwork Operating System |
| iOS | iPhone OS |
| IoT | Internet of Things |
| IOTP | Internet Open Trading Protocol |
| IP | internet protocol |
| IP | Intellectual Property |
| IP | Internet Protocol |
| IP address /number | Internet Protocol addresss /number |
| IP PBX | Internet Protocol private branch exchange |
| IP telephony | Internet Protocol telephony |
| IPA | intelligent process automation |
| IPAM | Intellectual property asset management |
| IPAM | IP Address Management |
| IPC | interprocess communication |
| IPCONFIG | internet protocol configuration |
| IPL | initial program load |
| IPL / IPLC | international private line / international private leased circuit |
| IPM | Internetwork Performance Monitor |
| IPMX | IP management exchange |
| I-PNNI | Integrated Private Network-Network Interface |
| IPP | internet printing protocol |
| IPP | Internet Printing Protocol |
| IPPP | Internet presence provider and promoter |
| IPR | Intellectual Property Rights |
| IPRM | intellectual property rights management |
| IPRR | Intellectual property rights and royalties |
| IPS | Intrusion prevention system |
| IPSEC | internet protocol security |
| IPSec | IP Security |
| IPT | Identity Protection Technology |
| IPT | IP telephony |
| IPTV | Internet Protocol Television |
| IPv4 | Internet Protocol, version 4 |
| IPv6 | Internet Protocal version 6 |
| IPv6CP | IPv6 PPP Control Protocol |
| IPX | internetwork packet exchange |
| IPX | Internetwork Packet Exchange |
| IPX/SPX | internetwork packet exchange/sequenced packet exchange |
| IR | infrared |
| IR | InfraRed |
| IR | Internet Registry |
| IRC | Internet Relay Chat |
| IrDA | Infrared Data Association |
| IRF | Intelligent Resilient Framework |
| iRMC | Integrated Remote Management Controller |
| IRP | I/o Request Packet |
| IRQ | interrupt request |
| IRQ | Interrupt Request |
| IRS | Interrupt Source |
| IRTF | Internet Research Task force |
| IRTF | Internet Research Task Force |
| IRU | Indefeasible Right of Use |
| IS | Information Systems |
| ISA | Industry Standard Architecture |
| ISA | Industry Standard Adapter |
| ISA | Internet Security and Acceleration |
| ISACA | Information Systems Audit and Control Association |
| ISAKMP | Internet Security Association and Key Management Protocol Authentication |
| ISAM | Indexed Sequential Access Method |
| ISATAP | Intra-Site Automatic Tunnel Addressing Protocol |
| ISC | Internet Software Consortium |
| iSCSI | Internet SCSI |
| ISDN | Integrated Services Digital Network |
| ISDN | Integrated Services Digital Network |
| ISIS | Image and Scanner Interface Specification |
| IS-IS | Intermediate System to Intermediate System (routing protocol) |
| IS-IS | Intermediate-System-to-Intermediate-System |
| ISL | inter-switch link |
| ISM | industrial, scientific and medical |
| ISN | Initial Sequence Numbers |
| ISO | Industry Standards Organization |
| ISO | International Organization for Standardization |
| ISOC | Internet Society, promotes internet policies |
| ISOC | Internet SOCiety |
| ISP | Internet Service Provider |
| ISP | Internet service provider |
| ISR | interrupt service routine |
| ISS | Internet Security Systems |
| ISSAC | Information System for Advanced Academic Computing |
| ISTG | InterSite Topology Generator |
| ISUP | ISDN User Part |
| ISV | independent software vendor |
| IT | Information Technology |
| ITAD | IT asset disposition |
| ITAM | IT asset management |
| ITC | IT consolidation |
| ITCAM | IBM Tivoli Composite Application Monitoring |
| ITCM | IT Change Management |
| ITCS | Intermodal Transport Control System |
| ITeS | Information Technology Enabled Services |
| ITIL | Information Technology Infrastructure Library |
| ITL | Instructional Technology Lab |
| ITLA | Incremented Three Letter Acronym |
| ITO | IT outsourcing |
| ITOM | IT operations management |
| ITU | International Telecommunication Union |
| ITU | International Telecommunication Union |
| ITU-T | International Telecommunications Union |
| ITWAB | IT Workload Automation Broker Tools |
| ITXC | Internet Telephony Exchange Carrier |
| IVANS | International Value Added Network Services |
| IVDT | Integrated Voice and Data Terminal |
| IVIS | in-vehicle information system |
| IVR | interactive voice response |
| IXC | Interexchange Carrier |
| IXS | Integrated xSeries Server |
| J2EE | Java 2 Platform, Enterprise Edition |
| J2ME | Java 2 platform, Micro Edition |
| J2SE | Java 2 platform, Standard Edition |
| JAAS | Java Authentication and Authorization Service |
| JACK | JACK Audio Connection Kit |
| JAD | joint application development |
| JAMES | Java Apache Mail Enterprise Server |
| JAR | Java Archive |
| JBIG | Joint Bi-level Image experts Group |
| JBL | Jame B. Lansing |
| JBOD | Just a Bunch of Disks |
| JCA | Java Connector Architecture |
| JCAHO | Joint Commission on Accreditation of Healthcare Organizations |
| JCB | job control block |
| JCL | Job Control Language |
| J-code | Japan code |
| JCP | Java Community Process |
| JDBC | Java DataBase Connectivity |
| JDK | Java Development Kit |
| JEDEC | Joint Electronic Devices Engineering Council |
| JES | Job Entry Subsystem |
| JFK | Just Fast Keying |
| JFS | Journaling File System |
| JIA | Joint Innovation Assessment |
| JIT | Just-in-time |
| JITA | Just In Time Activation |
| JITT | just-in-time training |
| JJ | Josephson Junction |
| JMS | Java Messaging Service |
| JNI | Java Native Interface |
| JOA | Joint Opportunity Assessment |
| JOLAP | Java Interface for OLAP |
| JPDL | jBoss process definition language |
| JPEG / JPG | Joint Photographic Experts Group |
| JRE | Java Runtime Environment |
| JS | JavaScript |
| JSON | JavaScript Object Notation |
| JSP | Java Server Page |
| JTAG | Joint Test Action Group |
| JTC | Join Transitive Closure |
| JTC1 | Joint Technical Committee |
| JTRS | Joint Tactical Radio System |
| JVM | Java virtual machine |
| JVT | job volume table |
| k | kilo |
| kaid | Kai console daemon |
| KB | kilobyte |
| Kb | Kilobit |
| kB | Kilobyte |
| KBE | knowledge-based engineering |
| KBMS | KeyBoard/MouSe |
| kbps | Kilobit per second |
| Kbps | Kilobits Per Second |
| KBS | Knowledge-Based System |
| KBW | keyboard wedge |
| KCC | Knowledge Consistency Checker |
| KDC | Key Distribution Center |
| KDD | Knowledge Discovery in Databases |
| KDE | K Desktop Environment |
| KDSI | thousand (K) Delivered Source Instructions |
| keychan | Key changer |
| keygen | Key Generator |
| keylogging | keystroke logging |
| KGD | Known Good Die |
| KiB | kibibyte |
| KIPS | Thousands of instructions per second |
| KIS | Knowbot Information Service |
| KISS | Keep It Simple, Stupid |
| KLOC | thousands of lines of code |
| KM | knowledge management |
| k-map | knowledge map |
| KML | Keyhole Markup Language |
| KMS | Key Management Server |
| KMS | Knowledge Management System |
| KNI | Katmai New Instructions |
| knowbot | Knowledge robots |
| KOLs | Key opinion leaders |
| KPCMS | Kodak Precision Color Management System |
| KPI | key performance indicator |
| KPN | (formerly) Koninklijke PTT Nederland |
| KPO | Knowledge Processing Outsourcing |
| KSAM | Keyed Sequential Access Method |
| ksh | Korn shell |
| KSR | Keyboard Send/Receive |
| KSU | Key Service Unit |
| KTM | kernel transaction manager |
| KTS | Key Telephone System |
| KUIP | Kernel User Interface Package |
| KVA | Kilo Volt Amp |
| KVM | K Virtual Machine |
| KVM | Keyboard, Video, and Mouse |
| kW | kilowatt |
| KWH | KiloWatt Hour |
| KYC | Know Your Customer |
| L1 / L2 cache | level-1/2 cache |
| l10n | localization |
| L2CAP | Logical Link and Control Adaptation Protocol |
| L2F | Layer2 Forwarding |
| L2F | Layer 2 Forwarding |
| L2S | Layer 2 Switch |
| L2TP | Layer 2 tunneling protocol |
| L2TP | Layer 2 Tunneling Protocol |
| L3F | Layer 3 Forwarding |
| L3S | Layer 3 Switch |
| L3TP | Layer Three Tunneling Protocol |
| LA | Load Address |
| LAC | L2tp Access Concentrator |
| LACNIC | Latin American and Caribbean Internet Addresses Registry |
| LACP | Link Aggregation Control Protocol |
| LADDR | Layered Device Driver |
| LAI | Location Area Identity |
| LAIPE | Link And In Parallel Execute |
| LAMP | Linux, Apache, MySQL and PHP |
| LAN | local area network |
| LAN | Local area network |
| LANE | Local Area Network Emulation |
| LAPB | Link Access Procedure, Balanced (x.25) |
| LAPD | Link Access Procedures on the D channel |
| LAPF | Link-access procedure for frame relay |
| LAS | logical application structure |
| laser | light amplification by stimulated emission of radiation |
| LASINT | laser intelligence |
| LAT | Local Address Table |
| LATA | Local Access and Transport Area |
| LBA | logical block addressing |
| LBA | Logical Block Addressing |
| LBAC | label-based access control |
| LBG | load balancing group |
| LBO | line buildout |
| LBS | Location-based service |
| LC | Lucent connector |
| LCC | Limited combustible cable |
| LCC / LLCC | Leaded Chip Carrier / Leadless Chip Carrier |
| LCD | liquid crystal display |
| LCD | liquid crystal display |
| LCI | local component installer |
| LCM | Life Cycle Management |
| LCN | local communication network |
| LCO | language context object |
| LCOS | Liquid Crystal On Silicon |
| LCP | Link Control Protocol |
| LCR | least cost routing |
| LCR | Lifetime Clinical Record |
| LCR | Line Concentration Ratio |
| LCR | Local Continuous Replication |
| LCS | Communications Server |
| LCS | Liquid Cooling System |
| LCS | Live |
| LD | Laser Disc |
| LDA | Local delivery agent |
| LDA | Local delivery agent |
| LDAP | lightweight directory access protocol |
| LDAP | Lightweight Directory Access Protocol |
| LDCM | LANDesk Client Manager |
| LDIF | LDAP Data Interchange Format |
| LDM | limited distance modem |
| LDP | Label Distribution Protocol |
| LDPC | low-density parity-check code |
| LDR | Light Dependent Resistor |
| LDS | logical data stream |
| LDT | Lightning Data Transfer (Bus) |
| LEAP | Lightweight Extensible Authentication Protocol |
| LED | light emitting diode |
| LED | light-emitting diode |
| LEED | Leadership in Energy and Environmental Design |
| LEL | Link, Embed and Launch-to-edit |
| LEO | Low Earth Orbit |
| LER | Label Edge Router |
| LF | Line Feed |
| LFB | look-ahead-for-busy |
| LFS | Linux From Scratch |
| LGA | Land Grid Aray |
| LGPL | Lesser General Public License (GNU) |
| LID | local identifier |
| LIDE | Light emitting diode In-Direct Exposure |
| LIFO | last in, first out |
| LINAC | Linear Accelerator |
| Li-on | lithium-ion |
| LION | Lower Indian Ocean Network |
| Lion / Li-ion | Lithium-ion |
| LIP | or LiPoly lithium-ion polymer |
| LIP | Loop Initialization Process |
| LIPS | Logical Inferences Per Second |
| LIS | Laboratory information system |
| Lisp | List Processor or List Processing |
| LKM | Loadable Kernel Modules |
| LL | local loop |
| LLC | Logical link control |
| LLDP | Link Layer Discovery Protocol |
| LLDP-MED | Link Layer Discovery Protocol-Media Endpoint Discovery |
| LLI | Low Latency Interrupts |
| LLI | Lower Layer Interface |
| LLTD | Link Layer Topology Discovery |
| LLU | local loop unbundling |
| LMA | Lightspeed Memory Architecture |
| LMDS | Local Multipoint Distribution Services |
| LMP | Link Manager Protocol |
| LMPP | Lighttpd/MySQL/PHP/Python |
| LMS | Learning Management System |
| LNA | launch numerical aperture |
| LNA | Low Noise Amplifier |
| LNIB | like new, in box |
| LNO | Loop Nest Optimization |
| LNP | Local Number Portability |
| LNS | L2tp Network Server |
| LOB | large object |
| LOB | Line-of-Business |
| LOC | Lines of Code |
| LOCK | local object creator and killer |
| LODA | Lombardi On-Demand Assistance |
| LOFS | LOopback File System |
| LOM | LAN On Motherboard |
| Loran | long-range radio navigation |
| LOS | Line of Sight |
| LOS | Loss of signal |
| LPA | Linear Power Amplifier |
| LPA | link pack area |
| LPAR / LP | logical partition |
| LPB | Low Ping Bastard |
| LPC | Linear Predictive Coding |
| LPC | Local Procedure Call |
| LPD | line printer daemon |
| LPD/LPR | line printer daemon / line printer remote |
| LPDA | Link Problem Determination Aid |
| LPF | League for Programming Freedom |
| LPF | Low-Pass Filter |
| LPFM | low-power FM radio |
| LPI | lines per inch |
| LPI | Linux Professional Insitute |
| LPP | Land Pre-Pits |
| LPPL | Latex Project Public License |
| LPR | line printer requester |
| LPT | line printer terminal |
| LPT | line print terminal |
| LPT1 | line printer terminal 1 |
| LPTV | low-power television |
| LPWA | Lucent Personalized Web Assistant |
| LPX | low profile extended |
| LPX | Low Profile eXtension / Extended |
| LQA | link quality analysis |
| LQSR | Link Quality Source Routing |
| LR | Lightroom |
| LRC | longitudinal redundancy check |
| LRC | Loop Resiliency Circuit |
| LRF | Little Rubber Feet |
| LRN | Location Routing Number |
| LRU | least recently used |
| LS | Loop-Start Signaling |
| LSA | Local Security Authority |
| LSAP | Link Service Access Point |
| LSAS | Local Security Authentication Server |
| LSASS | Local Security Authority Subsystem Service |
| LSB | Least Significant Bit |
| LSH | Locality-Sensitive Hashing |
| LSI | Large Scale of Integration |
| LSM | Linux Software Map |
| LSM | Local Service Manager |
| LSP | License Service Provider |
| LSR | label switch router |
| LSR | Leaf Setup Request |
| LSR | Line Service Request |
| LSR | Local Service Request |
| LSR | local shared resource |
| LSSGR | LATA Switching System Generic Requirements |
| LTC | line traffic coordinator |
| LTE | Lite Terminating Equipment |
| LTE | Long-Term Evolution |
| LTF | Leap To Frogans |
| LTM | Local Traffic Managers |
| LTPA | Lightweight Third Party Authentication |
| LTRAN | local transaction |
| LTRS | Letters Shift |
| LTS | Leaning Toothpick Syndrome |
| LU | Logical Units |
| LU | Logical Unit |
| LUF | lowest usable high frequency |
| LU-LU | between two logical units |
| LUN | logical unit number |
| LUNT | line unit network termination |
| LUS | LookUp Service |
| LUW | logical unit of work |
| LVD | low voltage differential |
| LVD | Low Voltage Differential |
| LVDS | Low Voltage Differential Signaling |
| LVM | Logical Volume Manager |
| LVM | Low Voltage Differential Signaling |
| LVOL / LV | logical volume |
| LWL | long wavelength |
| LWP | light-weight process |
| LZH | Lempel-Ziv-Haruyasu |
| LZW | Lempel Ziv Welch |
| M/L | Mobile-to-Land Traffic |
| M2M | Manufacturer-to-Manufacturer |
| M2M | model-to-model |
| MAA | Mail access agent |
| MAC | media access control |
| Mac | Macintosh |
| MAC | Media access control |
| MAC | message authentication code |
| MAC | Mid-Atlantic Crossing |
| MADM | Multiple Appearance Directory Number |
| MAE | Metropolitan Area Exchange and/or Ethernet |
| MAGs | Multichannel access gateways |
| mAH | milliampere-hour or milliamp-hour |
| MAID | massive array of idle disks |
| Malware | Malicious Software |
| MAN | metropolitan area network |
| MAN | Metropolitan area network |
| MANET | Mobile Ad Hoc Network |
| MAP | Major Sync Point |
| MAP | Manufacturing Automation Protocol |
| MAP | Mobile Application Part |
| MAPI | messaging application programming interface |
| MAPI | Messaging Application Programming Interface |
| MAPP | Microsoft Active Protections Program |
| MAPS | Mail Abuse Protection System |
| MARS | Monitoring, Analysis and Response System |
| MARS | Multicast Address Resolution Server |
| MARS | Multivariate Adaptive Regression Splines |
| MAS | Modula-2 Algebra System |
| MASER | Microwave Amplification by Simulated Emission of Radiation |
| MathML | Mathematics Markup Language |
| MAU | Medium Attachment Unit |
| MAU | Multistation Access Unit |
| MAX | Master Auxiliary Correction |
| Mb | megabit |
| MB | megabyte |
| Mb | megabyte |
| Mbps | Megabits per second |
| MBR | master boot record |
| MBR | Master Boot Record |
| MBS | Maximum Burst Size |
| MBSA | Microsoft Baseline Security Analyzer |
| MBSA | Microsoft Baseline Security Analyzer |
| MBT | MB Technology |
| m-business | mobile business |
| MC | Multiple choice |
| MCA | message channel agent |
| MCA | Micro Channel Architecture |
| MCCM | multichannel campaign management |
| MCI | Micro-channel architecture |
| MCI | Microwave Communications, Inc. |
| MCIF | (IBM) Measured Capability Improvement Framework |
| MCL | Mesh Connectivity Layer |
| MCM | Multi-Chip Module |
| MCMP | Multi-channel Multi-point |
| m-commerce | mobile commerce; |
| MCP | Microsoft Certified Professional |
| MCP | Multi-chip package |
| MCR | multivariant curve resolution |
| MCR | Maximum Cell Rate |
| MCSE | Microsoft Certified Systems Engineer |
| MCU | multipoint control unit |
| MD2/4/5 | Message Digest algorithm 2/4/5 |
| MDA | approaches |
| MDA | Model-driven architecture |
| MDA | model-driven |
| MDB | Message-Driven Beans |
| MDF | Main distribution frame |
| MDF | Medium Density Fiberboard |
| MDI | Medium Dependent Interface |
| mdisk | managed disk |
| MDIX | medium dependent interface crossover |
| MDM | master data management |
| MDM | Meter Data Management |
| MDP | Mobile Data Protection |
| MDS | Master Data Service |
| MDX | Multidimensional Expressions |
| ME | Millenium Edition |
| MEMS | micro-electromechanical systems |
| MEO | Medium/Middle Earth Orbit |
| MERVA | Message Entry and Routing with Interfaces to Various Applications |
| MES | Manufacturing Execution Systems |
| MES | Mobile Entertainment Service |
| MESA | Manufacturing Enterprise Solutions Association |
| MFA | Multifactor authentication |
| MFC | Microsoft Foundation Class |
| MFD | multi-function device |
| MFD | Multi Function Device |
| MFM | modified frequency modulation |
| MFP | multi-function product |
| MFP | multifunction product |
| MFS | Multi-Function Security |
| MFT | Managed file transfer |
| MFT | Master File Table |
| MGAS | mostly global address space |
| MGC | Media Gateway Controller |
| MHz | megahertz |
| MIA | Media Interface Adapter |
| MIB | Management Information BASE |
| MIB | Management Information Base |
| MIB | Management information base (SNMP) |
| MiB | mebibyte |
| MIC | Message Integrity Check |
| MICR | Magnetic Ink Character Recognition |
| MicroDIMM | micro dual inline memory module |
| MIDI | musical instrument digital interface |
| MIDI | Musical Instrument Digital Interface |
| MID-II | Management Information DataBase II |
| MIH | Master Information Hub |
| MII | Medium Independent Interface |
| MII | Microsoft/Intel/IBM |
| MILNET | Military Network |
| MIME | multipurpose internet mail extension |
| MIME | Multipurpose Internet Mail Extensions |
| MIMO | Multiple Input, Multiple Output |
| MIP | Multum in Parvum (Latin) means ‘many in one’ |
| MIPS | Millions of Instructions Per Second |
| MIS | management information systems |
| MISRA | Motor Industry Software Reliability Association |
| MIT | Massachusetts Institute of Technology |
| MITM | Man In The Middle |
| ML | Modular Line |
| MLHG | Multi-Line Hunting |
| MLI | multiple link interface |
| MLT | Mechanized Loop Test |
| MMC | Microsoft management console |
| MMC | Microsoft Management Console |
| MMC | MutiMedia Card |
| MMDS | multi-megabit data service |
| MMDS | Multipoint Microwave Distribution System |
| MMF | Multimode Fiberoptic Cable |
| MMO / MMOG | massively multiplayer online game |
| MMORPG | Massive Multiplayer Online Role Playing Game |
| MMR | Modified Modified Read |
| MMS | Microsoft Media Server |
| MMS | Multimedia Messaging Service |
| MMU | Memory Management Unit |
| MMX | multimedia extensions |
| MMX | multimedia extensions |
| MNP | Microcom Networking Protocol |
| MNS | managed network services |
| MNS | Master of Network Science |
| MO | Magneto-Optical |
| MOB | movable object |
| MoBo | motherboard |
| MoCA | Multimedia over Coax Alliance |
| MODEM | modulator-demodulator |
| MOE | Measures of Effectiveness |
| MOF | Microsoft Operations Framework |
| MOH | Music On Hold |
| MOM | Microsoft Operations Manager |
| MOO | Mud, Object Oriented |
| Moodle | Modular Object-Oriented Dynamic Learning Environment |
| MoReq | Model Requirements for the Management of Electronic Records |
| MORPH | (from) metamorphosis |
| MOS | Mean Opinion Score |
| MOSFET | Metal-Oxide-Semiconductor Field-Effect Transistor |
| MOSS | Microsoft Office SharePoint Server |
| MoST | mobile solutions terminal |
| MOTD | message of theday |
| MOTIS | Message oriented text interchange system |
| MOV | Merchant of Venice |
| MP3 | Moving Picture Experts Group Layer 3 Audio |
| MP3 | MPEG Layer 3 |
| MPAS | mostly private address space |
| MPEG | Moving Picture Experts Group |
| MPEG | Moving Picture Experts Group |
| MPI | Master Patient Index |
| MPIF | Multi-Processor Interconnect Facility |
| MPL | Mozilla Public License |
| MPL | Multi-schedule Private Line |
| MPLS | Multiprotocol Label Switching |
| MPN | Microsoft Partner Network |
| MPOE | minimum point of entry |
| MPP | massively parallel processing |
| MPPE | Microsoft Point to Point Encryption |
| Mpps | millions of packets per second |
| MPS | managed print services |
| MQ | message queue (formerly) |
| MQT | materialized query table |
| MRAM | magnetoresistive random access memory |
| MRI | Magnetic Resonance Imaging |
| MRO | maintenance, repair and operations |
| mrouter | multicast / router |
| MRTG | Multi Router Traffic Grapher |
| MRU | most recently used |
| MS | Message Store |
| MS | Memory Stick |
| MS | Microsoft |
| ms | millisecond |
| MSA | metropolitan statistical area |
| MSA | Mobile Sales Assistant |
| MSA | Modular Smart Array |
| MSAP | Microsoft Application Platform |
| MSB | Most Significant Bit |
| MSBD | Media Stream Broadcast Distribution |
| MSC | Mobile Switching Center |
| MSCONFIG | Microsoft configuration |
| MSCS | Microsoft Cluster Server |
| MSDB | main storage database |
| MSDE | Microsoft Data Engine |
| MSDN | Microsoft Developer Network |
| MSDP | Multicast Source Directory Protocol |
| MSDS | material safety data sheet |
| MSE | Microsoft Security Essentials |
| MSEE | Microsoft Equation Editor |
| MSI | Medium Scale Integration |
| MSI | Message Signal Interrupts |
| MSI | Micro Star International |
| MSI | MicroSoft Installer |
| MSIL | Microsoft Intermediate Language |
| MSL | Mean Sea Level |
| MSM | Mainframe Service Management |
| MSMQ | Microsoft Message Queuing |
| MSN | Microsoft Network |
| MSNP | Microsoft Notification Protocol |
| MSO | multiple-system operator |
| MSPP | MultiService Provisioning Platform |
| MSS | Maximum Segment Size |
| MSS | mobile satellite service |
| MSS / MSSP | managed security service (provider) |
| MSSP | managed security service provider |
| MSTP | Multiple Spanning Tree Protocol |
| MTA | Message transfer agent |
| MTA | Mail Transfer Agent |
| MTA | message transfer agent |
| MTA | Multi-Threaded Apartment |
| MTBF / MTTF | mean time between failures / mean time to failure |
| MTP | message transfer part |
| MT-RJ | Mechanical Transfer Registered Jack |
| MTS | Microsoft Transaction Server |
| MTSO | Mobile Telephone Switching Office |
| MTTR | mean time to repair |
| MTU | Maximum Transmission Unit |
| MTU | maximum transfer unit |
| MTU | Maximum Transmission Unit |
| MUA | Mail User Agent |
| MUD | Multi-User Dungeon or Dimension |
| MUI | multilingual user interface |
| multimedia | multiple forms of media |
| MULTOS | Multi-Application Operating System |
| MUSE | Multi-User Simulated Environment |
| mutex | mutual exclusion |
| MUX | Multiplexor |
| MVNO | mobile virtual network operator |
| MVS | Multiple Virtual Storage |
| MW | middleware |
| MWE | multiword expression |
| MWI | Mobile Web Initiative |
| MX record | mail exchange record |
| MXF | Material Exchange Format |
| NAB | Not A Bug |
| NAC | Network access control |
| NAC | network attached connection |
| NACHA | National Automated Clearing House Association |
| NADN | Nearest Active Downstream Neighbor |
| NAI | Network Associates Inc. |
| NAK | Negative acknowledgement or not acknowledged |
| NAM | Number Assignment Module |
| NAMPS | Narrowband Advanced Mobile Phone Service |
| NaN | Not a Number |
| NANAE | News.Admin.Net-Abuse.Email |
| NANOG | North American Network Operators Grou |
| NANP | Identifies the electrical conditions on the circuit. |
| NAP | Network Access Protection |
| NAP / NAPs | network access points |
| NAS | network-attached storage, network access server |
| NAS | network access server |
| NAS | Network Application Support |
| NAS | network-attached storage |
| NASDAQ | National Association of Securities Dealers Automated Quotations |
| NASS | Network Attachment Subsystem |
| NASTRAN | NASA Stress Analysis |
| NAT | network address translation |
| NAT | Network Address Translation |
| NAU | Network Addressable Units |
| NAUN | Nearest Active Upstream Neighbor |
| NAV | Norton Anti Virus |
| NAVSTAR | NAVigation Satellite Timing and Ranging |
| NBC | National Broadcasting Company |
| NBF | NetBIOS Frame Protocol |
| NBMA | Non-Broadcast Multiple Access (e.g. Frame Relay ATM) |
| NBNS | NetBIOS Name Server |
| NBP | Name binding protocol |
| NBSP | Non-Breaking Space |
| NBT | NetBIOS over TCP/IP |
| NC | Network Computer |
| NCC | Norton Control Center |
| NCCM | Network Configuration and Change Management |
| NCI | Network Channel Interface |
| NCP | NetWare Core Protocol |
| NCP | Network Control Program |
| NCp | Netware Core Protocol |
| NCP | Network Control Program |
| NCQ | Native Command Queuing |
| NDC | networked data center |
| NDIS | Network Driver Interface Specification |
| NDIS | Network Driver Interface Specification |
| NDM | Network Data Mover |
| NDMP | Network Data Management Protocol |
| NDP | Neighbor Discovery Protocol |
| NDr | Non-Delivery Receipt |
| NDS | Netware Directory Services |
| NEC | National Electric Code |
| NEC | NEC |
| NEl | Network Element Layer |
| NEMs | network equipment manufacturers |
| NES | Nintendo Entertainment System |
| NetApp | Network Appliance |
| NetBEUI | networked basic input/output system extended user interface |
| netbeui | NetBios Enhanced User Interface |
| NetBIOS | networked basic input/output system |
| NETBIOS | network basic input/output system |
| Netizen | citizen of theInternet |
| net-J | Internet disc jockey |
| newbie | New beginner |
| NEWS | Network Extensible Window System |
| NEXT | Near-End Crosstalk |
| NF / NFs | Normal Forms |
| NFC | Near-field communication |
| NFF | No Fault Found. |
| NFF | Notes Flat File |
| NFI | Near Field Imaging |
| NFS | Network File System |
| NFS | Network File System |
| NGC | Next Generation Communications |
| NGN | Next-Generation Network |
| NGOSS | next-generation operational support system solutions |
| NHM | Next Human Network |
| NHRP | Next Hop Resolution Protocol |
| NIC | network interface card |
| NIC | Network Information Center |
| NIC | Network Interface Card |
| nicad | nickel-cadmium |
| NICAM | Near Instantaneous Companded Audio Multiplex |
| NiCd | nickel cadmium |
| NICE | Narrative, Immersive, Collaborative Environment |
| NID | Network Interface Device |
| NIH | not invented here (syndrome) |
| NILO | Network Interface LOader |
| NIM | Network Interface Module |
| NiMH | nickel metal hydride |
| NiMH | Nickel Metal Hydride |
| NIP | Non-Impact Printer |
| NIR | Near-Infrared |
| NIS | Network Information Service |
| NIS | Norton Internet Security |
| NIST | National Institute of Standards and Technology |
| NJE | network job entry |
| NLA | Network Location Awareness |
| NLB | Network Load Balancing |
| NLDF | national language dependent function |
| NLI | not logged in or natural language interface |
| NLM | NetWare Loadable Module |
| NLM | Network Lifecycle Management |
| NLO | net-liberated organization |
| NLOS | Near Line OF Sight |
| NLP | Natural language processing |
| NLQ | Near Letter Quality |
| NLS | National Language Support |
| NLSP | Novell Link State Protocol |
| NLSR | Natural languagespeech recognition |
| NLX | new low-profile extended |
| NMC | Network Management Center |
| NMI | nonmaskable interrupt |
| NMOS | Negative-channel Metal Oxide Semiconductor |
| NMS | Network Management Station |
| NMS | Network Monitoring System |
| NNI | network-to-network interface |
| NNTP | network news transfer protocol |
| NNTP | Network News Transfer Protocol |
| NO/NC | Normally Open/Normally Closed |
| NOC | Network Operations Center |
| no-op | no operation |
| NOS | Network Operating System |
| NOS | Network Operating System |
| NPA | numbering plan area |
| NPC | North Pacific Cable |
| NPDA | Network Problem Determination Application |
| NPI | National Provider Identifier |
| NPL | Netscape Public License |
| NPP | Network Payment Protocol |
| NPSI | nonpartitioned secondary index |
| NPU | Network Processor |
| NRM | normal response mode |
| NRO | Number Resource Organization |
| NRZ | Non Return to Zero |
| NRZ | Non-return-to-zero |
| NRZI | Non-return to zero inverted |
| ns | Nanosecond |
| NSA | Network Security Appliance |
| NSFNET | National Science Foundation Network |
| NSI | Network Solutions, Inc |
| NSLookup | Name Server Lookup |
| NSLU2 | Network Storage Link for USB 2.0 |
| NSM | Network and Security Manager |
| NSP | Network Service Provider |
| NSR | nonshared resources |
| NSR | Non-Source Routed |
| NSS | Network Switching Subsystem |
| NT | New Technology |
| NTCIP | National Transportation Communications for Intelligent Transportation System |
| NTE | Network Termination Equipment |
| NTF | No Trouble Found |
| NTFS | new technology file system |
| NTFS | New Technology File System |
| NTLDR | new technology loader |
| NTO | Network Terminal Option |
| NTP | network time protocol |
| NTRU | Number Theory is Really Useful |
| NTSC | National Television System Committee |
| NTT | network topology template |
| NTT | Nippon Telegraph and Telephone |
| NUI | Natural User Interfaces |
| NUMA | Non-Uniform Memory Access |
| NVE | Network Visible Entity |
| NVRAM | Non-volatile RAM |
| NWLINK | Netware Link |
| NZ-DSF | Non Zero-Dispersion-Shifted Fiber |
| O.K.I. | Open Knowledge Initiative |
| O2 | Object-Oriented |
| O2O | Online To Offline |
| OAAM | Oracle Adaptive Access Manager |
| OADM | Optical Add/Drop Multiplexer |
| OAM | object access method |
| OAM / OA&M / OAM&P | Operations, Administation, and Management (and |
| OASIS | Organization for the Advancement of Structured Information Standards |
| OAT | Outside Air Temperature |
| OATH | Object-oriented Abstract Type Hierarchy |
| OBDR | One Button Disaster Recovery |
| OBEX | OBject EXchange |
| OBI | Open Buying on the Internet |
| OBIEE | Oracle BI Enterprise Edition |
| OBM | On-board modem |
| OBOE | Off-By-One Error |
| OBU | On Board Unit |
| OC | Optical Carrier |
| OC | overclock |
| OC-12 | Optical Carrier Level N |
| OC-192 | Optical Carrier Level N |
| OC-3 | Optical Carrier Level N |
| OC-48 | Optical Carrier Level N |
| OC-768 | Optical Carrier Level N |
| OCIA | Optically Coupled Interface Adapter |
| OCL | Object Constraint Language |
| OC-N | Optical Carrier Level N |
| OCP | Open-Closed Principle |
| OCP | Oracle Certified Professional |
| OCR | optical character recognition |
| OCR | Optical Character Recognition |
| OCSP | Online Certificate Status Protoco |
| OCTAVE | Operationally Critical Threat, Asset, and Vulnerability Evaluation |
| OCX | OLEÂ Custom Controls |
| ODA | Open Document Architecture |
| ODBC | Open Database Connectivity |
| ODBC | Open Database Connectivity |
| ODBO | OLE DB for OLAP |
| ODC | Offshore development center |
| ODD | optical disk drive |
| ODF | OpenDocument |
| ODI | Open Data link Interface |
| ODI | Open Data-link Interface |
| ODM | Original Design Manufacturer |
| ODMR | On-Demand Mail Relay |
| ODOE | on demand operating environment |
| ODP | Open Data Path |
| ODPS | On Demand Packaging Service |
| OEM | original equipment manufacturer |
| OEM | Oracle Enterprise Manager |
| OEM | Original Equipment Manufacturer |
| OEP | Outlook Exchange Protocol |
| OFB | output feedback |
| OFCom | Office of Communications |
| OFDM / OFDMA | Orthogonal Frequency-Division multiplexing (/Multiple Access) |
| OFM | Oracle Fusion Middleware |
| OFX | Open Financial Exchange |
| OGL | Open Graphics Language |
| OGSA | Open Grid Services Architecture |
| OHG | Operators Harmonization Group |
| OIC | Oracle Incentive Compensation |
| OID | Object Identifier |
| OLAP | online analytical processing |
| OLE | Object Linking and Embedding |
| OLED | organic light-emitting diode |
| OLIC | online image copy |
| OLIVE | On-Line Interactive Virtual Environment |
| OLPC | One Laptop Per Child |
| OLTP | On-Line Transaction Processing |
| OMA | Open Mashup Alliance |
| OMG | Object Management Group |
| OMH | order management hub |
| OML | Ontology Markup Language |
| OMR | optical mark recognition |
| OMR | Optical Mark Reader |
| OMSA | OpenManage Server Administrator |
| OMT | Object Modeling Technique |
| ONA | Organizational network analysis |
| ONE | Open Net Environment |
| OO | object-oriented or object orientation |
| OOA&D | Object-oriented analysis and design |
| OOB | Out Of Band |
| OODB | Object-Oriented Data Base |
| OOF | Out Of Frame |
| OOo | OpenOffice.org |
| OOP | object-oriented programming |
| OOSE | Object Oriented Software Engineering |
| OPA | Open Patent Alliance |
| OPA | Oracle Policy Automation |
| Opamp | Operational Amplifier |
| op-code | Operation Code |
| OpenCL | Open Computing Language |
| OpenGL | Open Graphics Library |
| OPML | Outline Processor Markup Language |
| OPN | Oracle Partner Network |
| OPOD | Oracle Procurement On Demand |
| OPS | Off Premise Station |
| OPX | Off Premise Extension |
| ORB | Object Request Broker |
| ORBS | Open Relay Behaviour-modification System |
| ORDB | Open Relay DataBase |
| ORF | Open reading frame |
| ORFS | Output Radio Frequency Spectrum |
| ORM | Object/Relational Mapping |
| ORM | operational risk management |
| OS | operating system |
| OS | Operating System |
| OSA | Open System Architecture |
| OSAF | Open Source Applications Foundation |
| OSD | On Screen Display |
| OSD | Open Software Description |
| OSDL | Open Source Development Lab |
| OSF | Open Software Foundation |
| OSGi | Open Services Gateway Initiative |
| OSI | Open Systems Interconnect |
| OSI | Open System Interconnect (joint ISO and ITU standard) |
| OSI | Open Systems Interconnection |
| OSLC | Open Services for Lifecycle Collaboration |
| OSMINE | Operations Systems Modification of Intelligent Network Elements |
| OSN | output sequence number |
| OSPF | Open Shortest Path First |
| OSPF | Open Shortest Path First |
| OSPF | Open Shortest Path First (routing protocol) |
| OSPM | Operating System Power Management |
| OSR | original equipment manufacturer service release |
| OSS | Online Service System |
| OSS | Open source software |
| OSSIM | Open Source Security Information Management |
| OST | Outside Surface Temperature |
| OTA | Over The Air |
| OTDR | Optical Time Domain Reflectometer |
| OTFE | On-the-fly encryption |
| OTM | Oracle Transportation Management |
| OTN | Optical Transport Network |
| OTP | One Time Password |
| OTP | one-time programmable |
| OTP | Open Trading Protocol |
| OTS | Over-the-Shoulder |
| OU | organizational unit |
| OUI | Organization Unique Identifier |
| OUI | Organizationally Unique Identifier |
| OVF | Open Virtualization Format |
| OVP | online video platform |
| OWA | Outlook Web Access |
| OWASP | Open Web Application Security Project |
| OWI | Optimized Warehouse Initiative |
| OWL | Web Ontology Language |
| OXE | OmniPCX Enterprise |
| p2mp | point-to-multipoint |
| P2P | Peer to Peer |
| P2SC | Power 2 Super Chip |
| P3P | Platform for Privacy Preferences |
| P4M | Pentium 4 Processor-M |
| PaaS | platform-as-a-service |
| PABX / PBX | private automatic branch exchange |
| PAC | Proxy Auto-Configuration |
| PACE | pressures, action, capabilities and enablers |
| PAD | Packet Assembler and Disassembler |
| PAE | Physical Addressing Extension |
| PAL | Phase Alternate Line |
| PAL | Processor Abstraction Layer |
| PAL | Publication Access List |
| PAM | Performance Acceleration Module |
| PAM | pluggable authentication module |
| PAM | Port to Application Mapping |
| PAM | pulse amplitude modulation |
| PAN | personal area network |
| PAN | Personal Area Network |
| PAP | Password Authentication Protocol |
| PAP | Printer access protocol |
| PAP | Password authentication protocol |
| PAP | Printer Access Protocol |
| PA-QSA | Payment Application Qualified Security Assessor |
| PARC | Palo Alto Research Center |
| PaRM | Patient relationship management |
| PASC | Portable Applications Standards Committee |
| PASV | Passive (command) |
| PAT | Performance Acceleration Technology |
| PAT | Port address translation |
| PATA | parallel advanced technology attachment |
| PAVCL | Panda Antivirus Command-Line Scanner |
| PB | PetaByte |
| PBM | pharmacy benefits management |
| PBN | policy-based networking |
| PBX | private branch exchange |
| PC | personal computer |
| PC | Personal Computer |
| PC | Personal computer (host) |
| PCB | Printed Circuit Board |
| PCCW | (formerly) Pacific Century CyberWorks |
| PCD | Photo Compact Disc |
| PCI | peripheral component interconnect |
| PCI | Peripheral Component Interconnect |
| PCI DSS | Payment Card Industry Data Security Standard |
| PCIe | peripheral component interconnect express |
| PCI-E | Peripheral Component Interconnect - Express |
| PCIX | peripheral component interconnect extended |
| PCL | printer control language |
| PCL | Printer Command Language |
| PCM | Pulse Code Modulation |
| PCM | Pulse-code modulation |
| PCMCIA | Personal Computer Memory Card International Association |
| PCMCIA | Personal Computer Memory Card International Association |
| PCR | Peak Cell Rate |
| PCRE | Perl-compatible regular expressions |
| PCS | Personal Communications Service |
| PCT | Private Communication Technology |
| PDA | personal digital assistant |
| PDA | Personal Digital Assistant |
| PDB | Program DataBase |
| PDC | Primary Domain Controller |
| PDC | Personal digital cellular |
| PDC | Primary Domain Controller |
| PDE | possible duplicate emission |
| Portable Document Format | |
| PDH | Plesiochronous Digital Hierarchy |
| PDL | Page description language |
| PDL | Pure Dumb Luck |
| PDM | Pure Digital Monitor |
| PDN | Public data network |
| PDN | Primary Directory Number |
| PDN | public data network |
| PDP | Policy Decision Point |
| PDQ | Product Data Quality |
| PDS | partitioned data set |
| PDU | Protocol Data Unit |
| PDU | Protocol data unit (such as segment, packet, frame, etc.) |
| PEAP | Protected Extensible Authentication Protocol |
| PEARL | Process and Experiment Automation Realtime Language |
| PEF | Preferred Executable Format |
| PEM | Privacy Enhanced Mail |
| PEP | Policy Enforcement Point |
| PEP | program entry procedure |
| Perl | Practical Extraction and Report Language |
| PERT | Program Evaluation and Review Technique |
| PET | Personal Electronic Transactor |
| PF Key | Program Function Key |
| PFM | personal financial management |
| PFS | Public-Key Forward Secrecy |
| PGA | pin grid array |
| PGA2 | pin grid array 2 |
| PGI | Premiere Global Services, Inc. |
| PGP | Pretty Good Privacy |
| PGR | presentation graphics routines |
| pgSQL | PostgreSQL |
| PHB | Per-Hop-Behavior |
| PHI | Protected Health Information |
| PHP | PHP Hypertext Preprocessor(originally Personal Home Page) |
| PHS | Personal Handy Phone System |
| PHY | Physical Layer |
| PHZIP | Phil Katz’s ZIP |
| PiB | pebibyte |
| PIC | Position-Independent Code |
| Picnic | Problem In Chair, Not In Computer |
| PID | Process ID |
| PID | Proportional Integral Derivative |
| PIE | Presence, Identity and Edge |
| PII | personally identifiable information |
| PIM | Personal information manager |
| PIM | Privileged Identity Management |
| PIM | Protocol Independent Multicast |
| PIN | personal identification number |
| PIN | personal identification number |
| PINE | Program for Internet News and E-Mail |
| ping | Packet Internet or Inter-Network Groper |
| PIO | Programmed Input/Output |
| PIPE | Private Internet Protocol Encapsulation |
| PIPs | process integration packs |
| PIX | Private Internet eXchange |
| pixel / pel | Picture Element |
| PKCS | Public-Key Cryptography Standards |
| PKI | public key infrastructure |
| PKI | public-key infrastructure |
| PL/1 | Programming Language 1 |
| PL/SQL | Procedural Language/Structured Query Language |
| PLA | Programmable Logic Array |
| PLC | PowerLine Communication |
| PLC | product life cycle |
| PLCP | Physical Layer Convergence Protocol |
| PLD | Programmable Logic Device |
| PLL | Phase Lock Loop |
| PLM | product life cycle management |
| PLMN | public land mobile network |
| PLOGI | port login |
| PLPA | pageable link pack area |
| PMD | Physical Media Dependent |
| PMDB | performance management database |
| PME | Power Management Event |
| PMI | Portable Management Interface |
| PMI | Privilege Management Infrastructure |
| PMI | Product and manufacturing information |
| PMI | Project Management Institute |
| PMM | Post Memory Manager |
| PMML | Predictive Model Markup Language |
| PMO | Project management office |
| PMR | Perpendicular Magnetic Recording |
| PMR | Private Mobile Radio |
| PMSM | permanent magnet synchronous motors |
| pNFS | parallel Network File System |
| PNG | Portable Network Graphics |
| PnP | plug and play |
| PNP | Personal Network Platform |
| PnP | Plug and Play |
| PNRP | Peer Name Resolution Protocol |
| POC | Proof of Concept |
| POC | Push-to-talk Over Cellular |
| POD | Proof of Deposit |
| POD | Publishing on demand |
| PoE | Power Over Ethernet |
| pog.com | Play Online Games |
| POLP | principle of least privilege |
| PON | passive optical networking |
| POP | post office protocol |
| POP | Point of presence |
| POP | Post Office Protocol |
| POP | protected object policy |
| POP3 | post office protocol 3 |
| POP3 | Post Office Protocol v3 |
| POP3 | Post Office Protocol, version 3 |
| POS | point of sale |
| POSIX | Portable Operating System Interface for UNIX |
| POST | power-on self test |
| POST | Power-on self test |
| POTS | plain old telephone service |
| POTS | Plain old telephone service |
| POWER | Performance Optimization With Enhanced Risc |
| POX | plain old XML |
| PPC | Pay-Per-Click |
| PPD | Postscript Printer Description |
| PPE | PowerPC Processor Element |
| PPM | Parts Per Million |
| PPM | project portfolio management |
| PPN | Primary Port Network |
| PPP | point-to-point protocol |
| PPP | Point to Point Protocol |
| PPP | Point-to-point Protocol |
| PPP | Public–private partnership |
| PPPoE | Point-to-Point Protocol over Ethernet |
| PPRC | Peer to Peer Remote Copy |
| PPTP | point-to-point tunneling protocol |
| PPTP | Point-to-Point Tunneling Protocol |
| PPU | PowerPC Processor Unit |
| PQA | Palm Query Application |
| PRADO | PHP Rapid Application Development Object-oriented |
| PRC | Primary Reference Clock |
| PRI | primary rate interface |
| PRI | Primary Rate Interface |
| PRINCE | Projects in Controlled Environments |
| PROM | programmable read-only memory |
| PROM | Programmable ROM |
| PRPQ | programming request for price quotation |
| PS | Photoshop |
| ps | Picosecond |
| PS | PlayStation |
| PS | PostScript |
| PS/2 | Personal System/2 connector |
| PS/2 | personal system/2 |
| PSA | professional service automation |
| PSD | PhotoShop Drawing |
| PSIP | Program and Systems Information Protocol |
| PSK | phase shift keying |
| PSLC | Parallel Sysplex License Charge |
| PSN | Packet Switch Node |
| PSN | Playstation Network |
| PSN | Processor Serial Number |
| PSP | Personal Software Process |
| PSP | PlayStation Portable |
| PSPs | print service providers |
| PSS | Print SubSystem |
| PSTN | public switched telephone network |
| PSTN | public switched telephone network |
| PTF | Print To Fax |
| PTR record | Pointer record |
| PTT | Postal, Telephone, and Telegraph |
| PTT | Public Telephone and Telegraph |
| PTT | Push To Talk |
| PTTs | Post, telegraph, and telephone authorities |
| PTZ | pan-tilt-zoom |
| PU | Physical Units |
| PUMA | Privileged user monitoring and auditing |
| PUMA | Protected User Mode Audio |
| PUP | Potentially unwanted program |
| PUT | program update tape |
| PVC | permanent virtual circuit |
| PVC | permanent virtual circuit |
| PVC | Polyvinyl Chloride |
| PVR | personal video recorder |
| PVST | Per-VLAN Spanning Tree |
| PVV | PIN verification value |
| PWM | Pulse width modulation |
| PWR | PoWeR |
| PWS | Personal Web Server (or Peer Web Services ) |
| P-x | Pentium - (numbers) |
| PXE | preboot execution environment |
| PXE | Preboot eXecution Environment |
| QA | Quality Assurance |
| QAM | quadrature amplitude modulation |
| QAT | Quantity Above Threshold Indicator |
| QB | QuickBASIC |
| QB | Quickbooks |
| QBDG | Query Based Distribution Group |
| QBDL | Query Based Distribution List |
| QBL | Query By Example |
| QCIF | Quarter Common Intermediate Format |
| QD | Queuing Delay |
| QDF | Quicken Data File |
| QDOS | Quick And Dirty Operating System |
| QDR | Quad Data Rate |
| QEMM | Quarterdeck Expanded Memory Manager |
| QFE | Quick Fix Engineering |
| QFP | Quoted For Permanence |
| QI | Query Interface |
| qic | Quarter-Inch Cartridge |
| QIF | Quicken Interchange Format |
| QIP | quality improvement process |
| QIX | NASDAQ Information Exchange protocol |
| QLLC | Qualified Logical Link Control protocol |
| QMF | Query Management Facility |
| QMS | Quality Micro Systems |
| QName | qualified name |
| QoE | quality of experience |
| QoS | quality of service |
| QoS | quality of service |
| QP | Quantum Programming |
| QPM | QoS Policy Manager |
| QPS | Queries-per-second |
| QPSK | Quadrature Phase-Shift Keying |
| QR code | Quick Response code |
| QSA | Qualified Security Assessor |
| QSIG | Q signaling |
| QT | QuickTime |
| QTM | Quadratic Texture Mapping |
| QTSS | QuickTime Streaming Server |
| QTVR | QuickTime Virtual Reality |
| QTW | QuickTime for Windows |
| Quagi | quad and Yagi |
| QVGA | Quarter Video Graphics Array |
| QXGA | Quad ((or Quantum) eXtended Graphics Array |
| R&D | research and development |
| R_A_TOV | resource allocation timeout value |
| RAB | Raid Advisory Board |
| RAB | Reverse-Link Activity Bit |
| RAC | Real Application Cluster |
| RACF | Resource Access Control Facility |
| RACH | Random Access Channel |
| racon | radar beacon |
| RAD | radiation absorbed dose |
| RAD | Rapid Application Development |
| RADA | random access discrete address |
| RADCAB | Relevancy Appropriateness Detail Currency Authority Bias |
| RADIUS | Remote Authentication Dial In User Service |
| RADIUS | Remote Authentication Dial-In User Service |
| RADSL | Reverse ADSL |
| RADVD | router advertisement daemon |
| RAI | remote alarm indication |
| RAID | redundant array of independent (or inexpensive) discs |
| RAID | Redundant Array of Independent Disks |
| RAM | random access memory |
| RAM | Random Access Memory |
| RAMDAC | Random Access Memory Digital to Analog Converter |
| RAN | Radio Access Network |
| RAPI | Rsvp Application Programming Interface |
| RARE | Européenne |
| RARE | Reseaux Associés pour la Recherche |
| RARP | Reverse Address Resolution Protocol |
| RARP | Reverse Address Resolution Protocol |
| RARP | Reverse ARP |
| RAS | remote access service |
| RAS | Registration, Admission, Status |
| RAS | Remote Announcing System |
| RAS | remote-access server (services) |
| RAS | Row Address Select |
| RAS | Row Address Strobe |
| RAT | Remote Administration Tool |
| RBA | Run Book Automation |
| RBAC | role-based access control or rule-based access control |
| RBAC | role-based access control |
| RBL | Real-time Black-hole List or Real-time Block List |
| RBOC | Regional Bell Operating Company |
| RC | Release Candidate |
| RC2/4/5 | Rivest Cipher 2/4/5 |
| RCA | Radio Corporation of America (cables) |
| RCC | radio common carrier |
| RCM | Revision and Configuration Management |
| rcp | Remote copy |
| RCP | Rich Client Platform |
| RCS | Revision Control System |
| RCU | Rapid Cloning Utility |
| RDAC | Redundant Disk Array Controller |
| RDBA | Remote Database Access |
| RDBMS | relational database management system |
| RDDL | Resource Directory Description Language |
| RDF | radio direction-finding |
| RDF | Resource Description Framework |
| RDI | remote defect indication |
| RDL | Report Definition Language |
| RDM | Remote Deployment Manager |
| rDNS | Reverse DNS |
| RDP | Remote Desktop Protocol |
| RDP | Router Discovery Protocol |
| RDR | Rate of Defect Recurrence |
| RDRAM | RAMBUS dynamic random access memory |
| RDT | remote digital terminal |
| RED | Random Early Detection |
| RED | Reputation Enabled Defense |
| REG | Range Extender with Gain |
| ReGS | Reporting Grid Services |
| REJ | Reject. In communications |
| Rel | Recorder element |
| REL | Rights Expression Language |
| RELAX | REgular LAnguage description for Xml |
| REN | Ringer Equivalency Number |
| RePDV | Reputation Digital Vaccine |
| Res | resolution |
| RES | Robots Exclusion Standard |
| REST | REpresentational State Transfer |
| RETAIN | Remote Technical Assistance and Information Network |
| REVS | Rapid Exchange of Virus Samples list. |
| REXX | Restructured EXtended eXecutor |
| RF | radio frequency |
| RF | Radio frequency |
| RFB | Remote Framebuffer |
| RFC | radio-frequency choke |
| RFC | Request for Comments |
| RFCOMM | Radio Frequency Communication |
| RFI | radio frequency interference |
| RFI | remote failure indication |
| RFID | radio frequency identification |
| RFMD | RF Micro Devices |
| RFP | Request For Proposal |
| RFS / RFU | Ready For Service / Use |
| RFT | Request For Technology |
| RFT | revisable-form text |
| RGB | red green blue |
| RGB | Red/Green/Blue |
| RGMP | Router-port Group Management Protocol |
| RHCE | Red Hat Certified Engineer |
| RHCS | Red Hat Cluster Suite |
| RHEL | Red Hat Enterprise Linux |
| RHR | radio horizon range |
| RHSBL | Right-Hand Side Blacklist |
| RIA | Rich Internet Application |
| RIM | Reference Information Model |
| RIM | Research In Motion |
| RIMM | RAMBUS inline memory module |
| RIMM | Rambus In-Line Memory Module |
| RIP | routing information protocol |
| RIP | raster image processor |
| RIP | Routing Information Protocol |
| RIPE | Réseaux IP Européens |
| RIR | regional Internet registry |
| RIS | remote installation service |
| RISC | reduced instruction set computer |
| RISC | Reduced Instruction Set Computer |
| RJ | registered jack |
| RJ-11 | registered jack function 11 |
| RJ11 | Registered Jack 11 |
| RJ-45 | registered jack function 45 |
| RJ45 | Registered Jack 45 |
| RJE | Remote Job Entry |
| RLC | Radio Link Control |
| RLE | run-length encoding |
| RLL | Run Length Limited |
| RLL | Run-Length Limited |
| rlogin | remote login |
| RLP | Radio Link Protocol |
| RMA | returned materials authorization |
| RMA | rate monotonic analysis |
| RMA | Return Materials Authorization |
| RMC | Raptor Management Console |
| RMC | Resource Monitoring and Control |
| RME | Rack Mount Equipment |
| RME | resource model engine |
| RMI | Remote Method Invocation |
| RMON | Remote Monitoring |
| RMS | Record Management System |
| RMS | Right Management Service |
| RMS | Root Mean Square |
| RMU | Rack Mount Unit |
| RNA | Ribonucleic acids |
| RNA | Ring No Answer |
| RNC | Radio Network Controller |
| R-NE | remote-network element |
| RNI | Raw Native Interface |
| RNR | receive not ready |
| ROA | recognized operating agency |
| ROADM | reconfigurable optical add-drop multiplexer |
| ROD | record oriented data |
| RODM | Resource Object Data Manager |
| RoHS | Restriction of Hazardous Substances |
| ROI | Return on Investment |
| ROKSO | Register of Known Spam Operations |
| ROLR | receive objective loudness rating |
| ROM | read only memory |
| ROM | Read-Only Memory |
| ROM | Report Object Model |
| ROOM | Real-Time Object-Oriented Modeling |
| ROP | Raster Operation |
| ROR | remote outdoor router |
| RoR | Ruby on Rails |
| ROS | run of site |
| ROSE | Remote Operations Service Element |
| rot13 | rotate 13 |
| RPA | Recursive Pyramid Algorithm |
| RPC | Remote Procedure Call |
| RPC | Remote Procedure Call |
| RPF | Reverse Path Forwarding |
| RPG | Report Program Generator |
| RPG | role-playing game |
| RPI | Rockwell Protocol Interface |
| RPL | Recognized Prior Learning |
| RPL | Remote Program Load |
| RPL | Requested Privilege Level |
| RPM | Rapid Predictive Modeler |
| RPM | Red Hat Package Manager |
| RPM | Revolutions Per Minute |
| RPM | Route Processor Module |
| RPN | Reverse Polish Notation |
| RPO | recovery point objective |
| RPP | receiving party pays |
| RPR | Resilient packet ring |
| RP-SMA | Reverse Polarity SubMiniature version A |
| RPT | radio personal terminal |
| RP-TNC | Reverse Polarity Threaded Neill-Concelman |
| RQN | Real-Quick Newsletter |
| RR | Resource Records |
| RR | Register to Register |
| RR | repeatable read |
| RR / RRS | round-robin scheduling |
| RR_TOV | resource recovery timeout value |
| RRI | Reverse Rate Indicator |
| RRPP | Rapid Ring Protection Protocol |
| RS | Recommended Standard |
| RS | Reed-Solomon |
| RS | Remote Scripting |
| RS | RuneScape |
| RS-232 or RS-232C | recommended standard 232 |
| RSA | register save area |
| RSA | Remote Supervisor Adapter |
| RSA | Rivest, Shamir and Adleman |
| RSA | rural service area |
| RSBAC | Rule Set Based Access Control |
| RSCT | Reliable Scalable Cluster Technology |
| rsh | Remote Shell Protocol |
| RSIP | Realm Specific Internet Protocol |
| RSL | received signal level |
| RSM | Relational Storage Manager |
| RSM | Remote Storage Management |
| RSM | Route Switch Module |
| RS-MMC | Reduced Size Multi-Media Card |
| RSN | Real Soon Now |
| RSPAN | Remote Switched Port Analyzer |
| RSS | RDF Site Summary / Really Simple Syndication |
| RSS | Receive Side Scaling |
| RSS | Relay Spam Stopper |
| RSSI | Relative Signal Strength Indicator |
| RSTP | Rapid Spanning Tree Protocol |
| RSU | Recommended Service Upgrade |
| RSU | remote switching unit |
| RSVP | Resource Reservation Protocol |
| RTC | real-time clock |
| RTC | Rich Thin Client |
| RTD | Real-Time Decisions |
| RTE | real-time enterprise |
| RTE | round-trip engineering |
| RTF | Rich Text Format |
| RTG | Radioisotope Thermoelectric Generators |
| RTG | Receive/transmit Transition Gap |
| RTGS | Radioisotope Thermoelectric Generators |
| RTK | Real Time Kinematic |
| RTM | Read The Manual |
| RTMP | Routing table maintenance protocol |
| RTMP | routing table maintenance protocol |
| RTO | recovery time objective |
| RTP | Real-time Transport Protocol |
| rtPS | Real-Time Polling Service |
| RTS | request to send |
| RTSC | Read the Source Code |
| RTSE | Reliable Transfer Service Element |
| RTSP | Real Time Streaming Protocol |
| RTT | Radio Transmission Technology |
| RTT | Real-Time Technology |
| RTT | round-trip time |
| RTTY | radio teletypewriter |
| RTU | Remote Terminal Unit |
| RTU | Right To Use |
| R-UIM | removable user identity module |
| RUOW | remote unit of work |
| RUP | Rational Unified Process |
| RUS | Recipient Update Service |
| RVI | Reverse Interrupt |
| RVLC | Reversible Variable Length Code |
| RW | Read Write |
| RWI | radio and wire integration |
| RWM | Read-Write Memory |
| RWP | Remote Write Protocol |
| RWU | remote wake-up |
| RX / RXD | Receive / Receiving Data |
| S/N | Signal-to-Noise |
| S/PDIF | Sony/Philips Digital Interface |
| S+ | Security+ |
| S3 | Simple Storage System |
| SA | Source-Active |
| SA | System Administrator |
| SAA | Systems Application Architecture |
| SaaS | software as a service |
| SAD | Security Association Database |
| SAIC | Science Applications International Corporation |
| SALT | Speech Application Language Tags |
| SAM | security account manager |
| SAM | Serial Access Memory |
| SAM | software asset management |
| SAML | Security Assertion Markup Language |
| SAN | storage area network |
| SAN / SANs | Storage Area Network(s) |
| SANS | SysAdmin, Audit, Network, Security |
| SANS | System Administration, Networking and Security institute |
| SAP | Service Advertising Protocol |
| SAP | Secondary Audio Program |
| SAP | Service Access Point |
| SAP | Service Advertising Protocol |
| SAP | Systeme, Anwendungen, Produkte |
| SAR | segmentation and reassembly |
| SAS | Single Attachment stations |
| SAS | Secure Attention Sequence |
| SAS | Serial Attached SCSI |
| SAS | single attachment station |
| SAS | Statistical Analysis System |
| SAS 70 | Statement on Auditing Standards No. 70 |
| SASL | Simple Authentication and Security Layer |
| SAST | Static application security testing |
| Sat Nav | Satellite navigation |
| SATA | serial advanced technology attachment |
| SATA | Serial ATA |
| SAV | Symantec AntiVirus |
| SAX | Simple API for XML |
| SB | Sound Blaster |
| SBAS | Satellite-Based Augmentation System |
| SBB | Storage Bridge Bay |
| SBC | Session Border Controller |
| SBC | single-board computer |
| SBCS | single-byte character set |
| SBCS | Smart Business Communications System |
| SBL | Spamhaus Block List |
| SBLOG | spam blog |
| SBM | Subnet Bandwidth Manager |
| SBS | Small Business Server |
| SBSD | Slow But Sure Death |
| SC | subscription channel |
| SCA | Service component architecture |
| SCADA | Supervisory Control And Data Acquisition |
| SCAI | Switch-to-Computer Applications Interface |
| SCAM | SCSI Configured Auto-Magically |
| SCCM | Software change and configuration management |
| SCCP | Signaling Connection and Control Part |
| SCCS | Source Code Control System |
| SCM | Service Control Manager |
| SCM | Source Code Management |
| SCM | Source configuration management |
| SCM | Specifc Coverage Metric |
| SCM | supply chain management |
| SCO | Santa Cruz Operation |
| SCOM | System Center Operation Manager |
| SCORM | Sharable Courseware Object Reference Model |
| SCP | Secure Copy |
| SCP | Service/Signal Control Point |
| SCPC | single channel per carrier |
| SCR | Sustainable Cell Rate |
| SCSI | small computer system interface |
| SCSI | Small Computer System Interface |
| SCSI ID | small computer system interface identifier |
| SCSL | Sun Community Source Licensing |
| ScTP | screened twisted pair |
| SCTP | Stream Control Transmission Protocol |
| SCWCD | Sun Certified Web Component Developer |
| SD | card secure digital card |
| SD | Sales and Distribution |
| SD | Secure Digital |
| SD | Span Destination |
| SDDL | Security Descriptor Definition Language |
| SDDM | source distributed data manager |
| SDDS | Sony Dynamic Digital Sound |
| SDEP | sequential dependent segment |
| SDFI | Secure Digital Forensic Imaging |
| SDH | Synchronous Digital Hierarchy |
| SDH | Synchronous Data Hierarchy |
| SDH | Synchronous Digital Hierarchy |
| SDK | software development kit |
| SDLC | Software development life cycle |
| SDLC | Synchronous Data Link Control |
| SDLS | Synchronous Data Link Control |
| SDLT | Super Digital Linear Tape |
| SDMA | spatial division multiple access |
| SDN | Secondary Directory Number |
| SDN | Software Defined Network |
| SDO | Service Data Objects |
| SDP | Service Delivery Platform |
| SDP | Session Description Protocol |
| SDR | software-defined radio |
| SDRAM | synchronous dynamic random access memory |
| SDRAM | Synchronous Dynamic Random Access Memory |
| SDS | Sudden Death Syndrome |
| SDSL | Symmetric Digital Subscriber Line |
| SDTV | Standard Definition television |
| SDVO | Serial Digital Video Output |
| SDX | Storage Data Acceleration |
| SE | secure element |
| SEAL | simple and efficient AAL |
| SEA-ME-WE | Southeast Asia-Middle East-Western Europe 2 |
| SEA-ME-WE 3 | Southeast Asia-Middle East-Western Europe 3 |
| SEAS | SaaS-enabled application server |
| SEC | single edge connector |
| SEC | Siemens Enterprise Communications |
| SECAM | Sequential Couleur a Memoire |
| SEG | secure e-mail gateway |
| SEM | Strategic Enterprise Management |
| SEN | Siemens Enterprise Communications |
| SEO | Search Engine Optimization |
| SERK | Server Extensions Resource Kit |
| SERP | Search Engine Results Page |
| SES | SecureEasySetup |
| SES | Severely Errored Seconds |
| SET | Secure Electronic Transaction |
| SETI | Search of Extraterrestrial Intelligence |
| SEX | Sun Users’ Group & elsewhere |
| SFA | Sales Force Automation |
| SFC | system file checker |
| SFD | Start-of-Frame Delimiter |
| SFD | Start-of-frame delimiter (Ethernet, HDLC, etc.) |
| SFF | Small Form Factor |
| SFP | Small form-factor pluggable |
| SFTP | SSH File Transfer Protocol (or program) |
| SFU | Services For Unix |
| SGC | Server Gated Cryptology |
| SGF | Structured Graphics Format |
| SGI | Silicon Graphics Incorporated |
| SGML | Standardized General Markup Language |
| SGML | Standard Generalized Markup Language |
| SGRAM | synchronous graphics random access memory |
| SGRAM | Synchronous Graphics Random Access memory |
| SGSN | Service GPRS Support Node |
| SHA | Secure Hash Algorithm |
| S-HTTP | Secure HTTP (rarely used) |
| S-HTTP | Secure Hypertext Transport Protocol |
| SI | system integration |
| SI | system integrator |
| SID | Security Identifier |
| SIEM (SEM & SIM) | Security Information and Event Management |
| Sig Block | signature block |
| SIIA | Software & Information Industry Association |
| SIIT | Stateless Ip/Icmp Translation algorithm |
| SIL | Safety Integrity Level |
| SIM | Security Information Management |
| SIM | subscriber identity module |
| SIMD | Single Instruction Multiple Data |
| SIMM | single inline memory module |
| SIMM | single in-line memory module |
| Simulcast | simultaneous broadcast |
| SIP | Session Initiation Protocol |
| SIPP | Stable Image Platform Program |
| SiS | Silicon Integrated Systems |
| SIS | Single Instance Store |
| SIS | student information system |
| SISMAPI | Siebel Internet Session Network API |
| SITA | Societe Internationale de Telecommunications Aeronautiques |
| SIU | smallest installable unit |
| SIX | Shared with Intent eXclusive |
| SKMS | Service Knowledge Management System |
| SKU | Stock Keeping Unit |
| SL | Scientific Linux |
| SLA | Service Level Agreement |
| SLARP | Serial Line ARP (Address Resolution Protocol) |
| SLED | Single Large Inexpensive disk |
| SLI | scalable link interface or system level integration or scanline interleave mode |
| SLI | Scalable Link Interface |
| SLIC | Subscriber Line Interface Card |
| SLIP | Serial Line interface Protocol |
| SLIP | Serial Line Internet Protocol |
| SLIP | Serial Line Internet Protocol (obs.) |
| SLM | service level management |
| SLP DA | Service Location Protocol Directory Agent |
| SLR | Scalable Linear Recording |
| SLS | Softlanding Linux System |
| SLSI | Super Large Scale of Integration |
| SM/SI | Social Mining and Social Intelligence |
| SMART | Self-Monitoring Analysis And Reporting Technology |
| SMASH | Simple, Many And Self-Healing |
| SMATV | satellite master antenna television |
| SMAU | Smart Multi station Access Unit |
| SMB | server message block or small to midsize business |
| SMB | Server Message Block |
| SMBP | Server Message Block Protocol |
| SMD | Storage Module Device |
| SMDR | station message detail recording |
| SMDS | Switched Multimegabit Data Service |
| SMDS | Switched Multimegabit Data Service |
| SMF | Semantic Modelling Format |
| SMI | Structure of Management Information |
| SMiShing | SMS phishing |
| SMLT | Split Multi-Link Trunking |
| SMP | Simple Management Protocol |
| SMP | Symetric MultiProcessing |
| SMS | Systems Management Server |
| SMS | Security Management System |
| SMS | Short Message Service |
| SMS | Systems Management Server |
| SMSC | Short Messaging Service Center |
| SMSC | Smart Mixed-Signal Connectivity |
| SMSI | Simplified Message Service Interface |
| SMTP | simple mail transport protocol |
| SMTP | Simple Mail Transfer Protocol |
| SN | Sequence Number |
| SNA | System Network Architecture |
| SNA | Social Network Analysis |
| SNA | Systems Network Architecture |
| SNA | Systems Network Architecture (IBM) |
| SNAP | SubNet Access Protocol |
| SNAP | Sub-Network Access Protocol |
| SNC | Supply Network Collaboration |
| SNI | Switch Node Interface |
| SNIPS | System & Network Integrated Polling Software |
| SNMP | simple network management protocol |
| SNMP | Simple Network Management Protocol |
| SNS | social networkingsite |
| SOA | Service Oriented Architecture |
| SOA | Start of Authority |
| SOAP | Simple Object Access Protocol |
| SOC | Security Operation Centre |
| SOC | Separation Of Concerns |
| SOCKS | SOCKetS |
| SoDIMM | small outline dual inline memory module |
| SODIMM | Small Outline Dual Inline Memory Module |
| SOF | Start of frame |
| SOH | Start Of Header |
| SOHO | small office/home office |
| SoIP | Storage over IP |
| SOM | Self-Organizing Map |
| SONET | Synchronous Optical Network |
| SONET | Synchronous Optical Network |
| SONIC | SAC On-Line Interactive Controller |
| SONIC | Science Of Networks In Communities |
| SORBS | Spam and Open Relay Blocking System |
| SOS | Secure Object Store |
| SOS | Sophisticated Operating System |
| SOS | Symbian Operating System |
| SOW | statement of work |
| SOX | Sarbanes-Oxley Act |
| SP | service pack |
| SP | Service-Packs |
| SP | storage processor |
| SP1 | service pack 1 |
| SP2 | service pack 2 |
| SPAN | Switched Port Analyzer |
| SPARC | Scalable Processor ARChitecture |
| SPB | Stored Procedure Builder |
| SPC | stored program control |
| SPD | Serial Presence Detect |
| SPD | System Products Division |
| SPDIF | Sony-Philips digital interface format |
| SPE | Synergistic Processor Element |
| SPE | System Policy Editor |
| SPF | Sender Policy Framework |
| SPF | Shortest Path First |
| SPGA | staggered pin grid array |
| Sphairon | Sphere, luminary, global and Elektron, Technology (vision) |
| SPI | Serial Peripheral Interface |
| SPI | Stateful Packet Inspection |
| SPICE | Simple Protocol for Independent Computing Environment |
| SPIM | Spam over Instant Messaging |
| SPIT | Spam over Internet Telephony |
| SPL | Sender Policy Framework |
| SPL | Sound Pressure Level |
| SPM | Statistical Packet Multiplexing |
| SPM | supplier performance management |
| SPML | Service Provisioning Markup Language |
| SPOF | Single point of failure |
| SPOI | Signaling Point Of Interface |
| SPOT | Smart Personal Objects Technology |
| SPREAD | Systems Programming, Research, Engineering And Development |
| SPSS | Statistical Package for the Social Sciences |
| SPU | Synergistic Processor Unit |
| SPX | sequenced package exchange |
| SPX | Sequenced Packet Exchange |
| SQL | Structured Query Language |
| SQL | Structured Query Language |
| SQL PL | SQL procedural language |
| SQR | Security to Quality Defect Ratio |
| SR | Speech Recognition |
| SRAM | static random access memory |
| SRAM | Static random access memory |
| SRAT | Static Resource Affinity Table |
| SRGS | Speech Recognition Grammar Specification |
| SR-IOV | Single-root I/O virtualization standards |
| SRL | Singing Return Loss |
| SRM | storage resource management |
| SRS | Shared Registry Server |
| SRT | (formerly) Souris River Telecommunications |
| SRT | Source Routing Transparent |
| SRV | Service records |
| SS7 | Signaling System 7 |
| SSA | Social Security Administration |
| SSA | Survivable Systems Analysis |
| SSAP | Source Service Access Point |
| SSB | sequential store buffer |
| SSCP | Systems Services Control |
| SSD | Solid-State Drive |
| SSE | Simple Sharing Extension |
| SSE | Streaming Simd Extensions |
| SSH | secure shell |
| SSH | Secure shell |
| SSI | Server-Side Includes |
| SSI | Small Scale Integration |
| SSID | service set identifier |
| SSID | Service Set identifier |
| SSID | Service set identifier (Wi-Fi) |
| SSIM | Symantec Security Information Manager |
| SSL | secure sockets layer |
| SSL | Secure Sockets Layer |
| SSLE | sequential systems of linear equations |
| SSMP | Simple Screen Management Protocol |
| SSO | single sign-on |
| SSO | System Security Officer |
| SSSCE | Short Self-Contained Correct (or Compilable) Example |
| ST | straight tip |
| STA | Single Threaded Apartment |
| STEP | Standard for the exchange of product |
| STK | Satellite ToolKit |
| STM | scanning tunneling microscopes |
| STM | Synchronous Transport Module |
| STP | shielded twisted pair |
| STP | shielded twisted pair |
| STP | Soa Tools Platform |
| STP | Spanning Tree Protocol |
| STP | Straight Through Processing |
| STP | Switching Transfer Points or Single Transfer Points |
| STS | Security Token Service |
| STT | Secure Transaction Technology |
| STUN | Session Traversal Utilities for NAT |
| STX | Start Of Text |
| SUA | Single User Account |
| SUS | Software Update Services |
| SUT | System Under Test |
| SVBR | Semantics of Business Vocabulary and Business Rules |
| SVC | Switched virtual circuit |
| SVC | Scalable Video Coding |
| SVC | supervisor call |
| SVC | Switched Virtual Circuit |
| SVD | Secondary Virtual Disk |
| SVG | Scalable VectorGraphics |
| SVGA | super video graphics array |
| SVGA | Super Video Graphics Array |
| S-Video | Super-Video /Â Sony Video |
| SVPCo | Small Value Payments Co. |
| SW or S/W | Software |
| SWAP | Shared Wireless Access Protocol |
| SWAT | Samba Web Administration Tool |
| SWAT | Solutions with Advanced Technologies |
| SWIFT | Society for Worldwide Interbank Financial Telecommunication |
| SWIM | System Wide Information Management |
| SWL | short wavelength |
| SWOP | Specifications for Web Offset Publications |
| SWT | Standard Widget Toolkit |
| SXGA | super extended graphics array |
| SYN (TCP) | Synchronization |
| Sync | Synchronisation |
| syslog | system logging |
| Sysop | System Operator |
| SYSVOL | System Volume |
| T2L | TRANSISTOR-TRANSISTOR LOGIC |
| TACACS | Terminal Access Controller Access Control System |
| TAE | text analysis engine |
| TAO | Track at Once |
| TAPI | Telephony Application Programming Interface |
| tar | Tape ARchive |
| TAXI | Transparent Asynchronous Transmitter/Receiver Interface |
| TB | terabyte |
| Tb | terabit |
| TB | TeraByte |
| Tbps | terabits per second |
| TBR | Technology Business Research |
| TCA | Transaction Cost Analysis |
| TCAP | Transaction Capabilities Application Part |
| TCB | trusted computing base |
| TCG | Trusted Computing Group |
| tcl | Tool Command Language |
| TCO | total cost of ownership |
| t-commerce | television commerce |
| TCP | transmission control protocol |
| TCP | Test Coordination Procedure |
| TCP | Transmission Control Protocol |
| TCP/IP | transmission control protocol/internet protocol |
| TCP/IP | Transmission Control Protocol/Internet Protocol |
| TCP/IP | Transmission Control/Internet Protocol |
| TCQ | Tagged Command Queuing |
| TCS | Tata Consultancy Services |
| TCS | Telecommunications Systems |
| TCU | transmission control unit |
| TDC A/S | Tele-Denmark Communications |
| TDD/TTY | Tone Dialing for the Deaf/Teletype |
| TDDM | target distributed data manager |
| TDI | Transport Driver Interface |
| TDK | Tokyo Denki Kagaku |
| TDL | time differential linking |
| TDM | time division multiplexing |
| TDM | Time-division multiplexing |
| TDR | time domain reflectometer |
| TDR | Time Domain Reflectometry |
| TD-SCDMA | Time division-synchronous code division multiple access |
| TE | Traffic Engineering |
| TEC | Thermoelectric Cooler |
| TEC | Tivoli Enterprise Console |
| TED | Technology Entertainment and Design |
| TED | Tiered Electronic Distribution |
| TED | Torrent Episode Downloader |
| TED | Tunnel Endpoint Discovery |
| TEHO | tail end hop off |
| TEI | Total Economic Impact |
| Telco | telephone company |
| telematics | telecommunications and informatics |
| telephony | Telephone technology |
| Telnet | telephone network protocol |
| TEM | telephone expense management |
| TERM | technology-enabled relationship management |
| TESS | and Statistics Server |
| TESS | Transaction Events |
| TETRA | Terrestrial Trunked Radio |
| texel | Texture Element |
| TFRC | TCP-Friendly Rate Control |
| TFS | Team Foundation Server |
| TFS | Three Finger Salute |
| TFT | Thin Film Transistor |
| TFTP | trivial file transfer protocol |
| TFTP | Trivial File Transfer Protocol |
| TGT | ticket-granting ticket |
| TI | Texas Instruments |
| TIA | Telecommunications Industries Association |
| TIA | Telecommunications Industry Alliance |
| TiB | tebibyte |
| TIES | time independent escape sequence |
| TIFF | Tag Image File Format |
| TIP | Telepresence Interoperability Protocol |
| TISPAN | Telecoms & Internet Converged Services & Protocols for Advanced Networks |
| TKIP | Temporal Key Integrity Protocol |
| TLB | translation lookaside buffer |
| TLD | Top Level domain |
| TLD | Top Level Domain |
| TLI | Transport Layer Interface |
| TLL | Task Library Language |
| TLM | Transportation Lifecycle Management |
| TLP | Transactional Licensing Program |
| TLS | Transport Layer Security |
| TMHES | Trend Micro Hosted Email Security |
| TMP file | temporary file |
| TMRS | traffic measurement and recording systems |
| TMS | Threat Management System |
| TMS | transportation management system |
| TNC | Trusted Network Connect |
| TNEF | Transport Neutral Encapsulation Format |
| TNS | Transaction Network Services |
| TOA | time of arrival |
| TOD | time-of-day |
| TOD | Tool on Demand |
| TOE | TCP/IP Offload Engine |
| TOFU | Trust On First Use |
| ToS | Type Of Service |
| TOSLink | Toshiba Link |
| TPF | Transaction Processing Facility |
| TPM | Transactions Per Minute |
| TPM | Trusted Platform Module |
| TP-MIC | Twisted-Pair Media Interface Connector |
| TPMs | transaction processing monitors |
| TPS | Transaction Process System |
| TPS | transactions per second |
| TPV | Third Party Vendor |
| TR | Terminal Ready |
| tracert | traceroute |
| Transceiver | Transmitter/Receiver |
| TRIP | Telephony Routing over Internet Protocol |
| TRIP | Token Ring Interface Processor |
| Triple DES / TDES | Triple Data Encryption Standard |
| TRM | Teradata Relationship Manager |
| TRS | Tip, Ring, Sleeve (cable) |
| TRUE | task-related user exit |
| TS | Terminal Server / Services |
| TS-CAL | Terminal Services - Client Access License |
| TSF | Text Services Framework |
| TSIG | Transaction Signature |
| TSM | Tivoli Storage Manager |
| TSM | trusted service manager |
| TSN | The Sierra Network |
| TSO | Time Sharing Option |
| TSOP | Thin Small Outline Package |
| TSR | Terminate and Stay Resident |
| TSRM | Tivoli Service Request Manager |
| TSV | Tab Separated Value (file) |
| TTL | Time To Live |
| TTL | Transistor Transistor Logic |
| TTP | trusted third party |
| TTS | Text-To-Speech |
| TTY | TeleTypewriter |
| TUCOWS | The Ultimate Collection of Winsock Software |
| TUP | Telephone User Part |
| TUR | trunk utilization report |
| TVO | total value of opportunity |
| TVT | ThinkVantage Technology |
| TWA | transaction work area |
| TWAIN | technology without an interesting name |
| TWX | Teletypewriter Exchange Service |
| TX | Transmit / Transmission |
| TXT | Trusted eXecution Technology |
| TXT record | Text record |
| U2F | Undetectable and Untraceable Fraud |
| UA | Users agent |
| UA | Upgrade Advantage |
| UAC | User Account Control |
| UART | universal asynchronous receiver transmitter |
| UART | universal asynchronous receiver-transmitter |
| UAT | User Acceptance Test |
| uauth | user authentication |
| UBE | unsolicited bulk email |
| UBR | Undefined Bit Rate |
| UC | Unified communications |
| UC&C (or UCC) | Unified Communications & Collaboration |
| UC2 | Unified Communications and Collaboration |
| UCB | unit control block |
| UCC | Uniform Code Council |
| UCCW | Ultimate custom widget |
| UCD | Unicode Character Database |
| UCD | Uplink Channel Descriptor |
| UCD | User-centered design |
| UCE | Unsolicited Commercial Email |
| UCM | Unified Change Management |
| UCM | Unified Computing System |
| UCM | Universal Content Management |
| UCM | Universal Customer Master |
| UCM | Use Case Maps |
| UCP | Ubuntu Certified Professional |
| UCS | Universal Character Set |
| uDAPL | User Direct Access Programming Library |
| UDDI | Universal Description, Discovery and Integration |
| UDF | user defined functions or universal disk format or universal data format |
| UDF | Universal Disk Format |
| UDLP | UniDirectional Link Protocol |
| UDMA | ultra direct memory access |
| UDMA | Ultra DMA (Ultra Direct Memory Access) |
| UDO | Ultra Density Optical |
| UDP | user datagram protocol |
| UDP | User Datagram Protocol |
| UDRP | Uniform Dispute Resolution policy |
| UFS | Unix File System |
| UGC | User generated content |
| UGS | Unsolicited Grant Service |
| UHF | Ultra High Frequency |
| UHV | Ultra High Voltage |
| UI | user interface |
| UIA | Unified Information Access |
| UL | Underwriter’s Laboratory |
| UL | Underwriters Laboratories Inc. |
| ULH | ultra-long-haul |
| ULV | Ultra Low Voltage |
| UM | Unified messaging |
| UMA | Unified-Memory Architecture |
| UMA | Unlicensed Mobile Access |
| UMA | Upper Memory Area |
| UMA | User Mode Audio |
| UMB | Ultra Mobile Broadband |
| UMB | upper memory block |
| UMC | ultra modular computing |
| UMID | Unique Material IDentifier |
| UML | Unified Modeling Language |
| UMS | Unfied Messaging Systems |
| UMTS | Universal Mobile Telecommunication System |
| UNC | universal naming convention |
| UNC | Uniform / Universal Naming Convention |
| UNI | User-to-Network Interface |
| Unicode | UNIversal CODE |
| UNR | Ubuntu Netbook Remix |
| UOL | Universo Online |
| UOW | unit of work |
| UPA | user printable area |
| UPC | Universal Product Code |
| UPnP | Universal Plug and Play |
| UPS | uninterruptible power supply |
| UPS | Uninterruptible Power Supply |
| UPT | Universal Personal Telecommunications |
| URC | Utility Ready Computing |
| URI | Uniform Resource Identifier |
| URL | uniform resource locator |
| URL | Uniform Resource Locator |
| URN | Uniform Resource Name |
| uRPF | Unicast Reverse Path Forwarding |
| URT | universal receiver transmitter |
| URT | User Registration Tool |
| USB | universal serial bus |
| USB | Universal Serial Bus |
| USB | Upper Side Band |
| USENET | USEr’s NETwork |
| USF | Universal Service Fund |
| USG | UNIX Systems Group |
| USHER | United States Higher Education Root Certificate Authority |
| USL | UNIX System Laboratories |
| USM | Unifed Service Model |
| USM | Unsharp masking |
| USMT | user state migration tool |
| USMT | User State Migration Tool |
| USO | universal service obligation |
| USP | Universal Storage Platform |
| USP | usage sensitive pricing |
| usr | Unix System Resources |
| USRT | Universal Synchronous Receiver Transmitter |
| USS | unformatted system service |
| UT | Upper Tester |
| UTF-8 | Unicode Transformation Format 8 |
| UTM | Unified Threat Management |
| UTM | Universal Transverse Mercator |
| UTP | unshielded twisted pair |
| UTP | Unshielded twisted pair |
| UTSL | Use The Source Luke |
| UUCP | Unix to Unix Copy |
| UUEE | Unix-to-Unix Encode |
| UUENCODE | Unix to Unix Encoding |
| UUG | Unix User Group |
| UUID | Universally Unique Identifier |
| UUNET | UNIX to UNIX Network |
| UUT | Unit Under Test |
| UV | UltraViolet light |
| UWB | Ultra-Wide-Band |
| UWIN | Unix for WINdows |
| UXGA | ultra extended graphics array |
| UXP | user experience |
| V H | Vertical and horizontal grid points |
| V2P | Virtual to physical |
| VA | virtual assistant |
| VAD | Value-Added Distributor |
| VAD | Voice Activity Detection |
| VADP | vStorage APIs for Data Protection |
| VAIO | Video Audio Integrated Operation |
| VAN | Value-Added Network |
| VAR | value-added reseller |
| VAROS | VAriable Refraction Optical System |
| VATH | Visual, Auditory, Tactile, Haptic |
| VAX | Virtual Address Extension |
| VB | Visual Basic |
| VBA | Virtual backup appliance |
| VBA | Visual Basic for Applications |
| vBNS | very high-speed Backbone Network Service |
| VBR | variable bit rate |
| VBR | Very Busy Run |
| VBUG | Voice Browser Usability Group |
| VBX | Visual Basic Custom Control |
| VC | Videoconference |
| VC | Virtual Channel |
| VC | Virtual circuit |
| VCB | VMware Consolidated Backup |
| VCC | Voice Call Continuity |
| VCD | Video Compact Disc |
| VCDX | VMware Certified Design Expert |
| VCI | Virtual Channel Identifier |
| VCM | Virtual Channel Memory |
| VCO | voltage-controlled oscillator |
| VCP | Value Chain Planning |
| VCP | VMware Certified Professional |
| VCR | video cassette recorder |
| VD | Virtual Disk |
| Vdeck | Video Deck |
| VDI | Virtual desktop infrastructure |
| VDR | virtual deal room |
| VDS | Variable Drop Size |
| VDS | visual data stream |
| VDSL | very high-speed digital subscriber line |
| VDT | Video Display Terminal |
| VDU | Visual Display Unit |
| VEP | vertical enterprise portal |
| Veronica | Very Easy Rodent Oriented Net-wide Index to Computerized Archives |
| VESA | Video Electronics Standards Association |
| VESA | Video Electronics Standards Association |
| VF | Voice Frequency |
| VFAT | virtual file allocation table |
| VFM | virtual file manager |
| VGA | video graphics array |
| VGA | Video Graphics Array |
| VGF | voice grade facility |
| VHD | Virtual Hard Drive |
| VHDL | VLSI Hardware Description Language |
| VHDTS | Very High Density Thumb Screw |
| VHF | very high frequency |
| VHLL | Very-High-Level Language |
| VHM | Voice Health Monitor |
| VHS | video home system |
| VIC | Voice Interface Card |
| VIM | Vendor Independent Messaging protocol |
| VIM | Vendor Independent Messaging |
| Vines | VIrtual NEtwork System |
| VIO | virtual input/output |
| VIP | VeriSign Identity Protection |
| VITAL | VHDL Initiative for the Standardization of ASICÂ Libraries |
| VIVO | Video In Vide o Out |
| VLA | Volume License Agreement |
| VLAN | Virtual local area network |
| VLAN | virtual local-area network |
| VLC | VideoLan Client |
| VLDB | very large database |
| VLE | Virtual Learning Environment |
| VLF | Very Low Frequency |
| VLF | Virtual Log File |
| VLIW | Very Long Instruction Word |
| VLK | Volume License Key |
| VLL | Virtual Leased Line |
| VLR | Visitor Location Register |
| VLS | Virtual Library Systems |
| VLSI | Very Large Scale of Integration |
| VLSM | Variable Length Subnet Masking |
| VLSM | Variable-length subnet masking |
| VM | virtual machine |
| v-mail | Video mail |
| VMDQ | Virtual Machine Device Queues |
| VMEbus | VersaModule Eurocard bus |
| VMI | vendor-managed inventory |
| VML | Vector Markup Language |
| VMM | virtual machine monitor |
| VMS | Virtual Memory System |
| VMS | Vocabulary Management Solution |
| VMS | Voice Message Service |
| VNC | Virtual Network Computing |
| VNL | via net loss |
| VNO | virtual network operator |
| VoD | Video On Demand |
| Vodcast | video podcasting |
| VoIP | voice over internet protocol |
| VoIP | voice over Internet Protocol |
| Voken | virtual token |
| VOM | Volt-Ohm-Milliammeter |
| VOP | Velocity of Propagation |
| vortal | Vertical portal |
| VOX | Voice Operated eXchange |
| voxel | Volume pixel, or volume picture element |
| VoxML | Voice Markup Language |
| VPA | valid printable area |
| VPA | Volume Procurement Amendment |
| VPD | Vital Product Data |
| VPDN | Virtual Private Dial-up Network |
| VPI | Virtual Path Indentifier |
| VPLS | virtual private LAN service |
| VPN | virtual private network |
| VPN | Virtual Private Networking |
| VPN | Virtual private network |
| VPS | Vectors Per Second |
| VPS | Virtual private server |
| VQF | Vector Quantization Format |
| VR | Virtual reality |
| VRAM | video random access memory |
| VRC | Vertical Redundancy Check |
| VRF | VPN routing/forwarding instance |
| VRM | voltage regulator module |
| VRML | Virtual Reality Modeling Language |
| VRRP | Virtual Router Redundancy Protocol |
| VRS | Virtual Reference Station |
| VRT | Variable-Rate Technology |
| VRU | voice response unit |
| VSAM | Virtual Sequential Access Method |
| VSAM | Virtual Storage Access Method |
| VSAT | very small aperture terminal |
| VSB | very severe burst |
| VSB | Vestigial sideband |
| VSD | ViSio Diagram |
| VSE | Virtual Storage Extended |
| VSELP | Vector Sum Excited Linear Predictive |
| VSIP | Visual Studio Industry Partners |
| VSM | Value Stream Mapping |
| VSN | volume serial number |
| VSNL | Videsh Sanchar Nigam Limited |
| VSP | VoIP Service Provider |
| VSR | Vertical Scan Rate |
| VSS | vector symbol set |
| VSS | Volume Shadow Copy |
| VSwitch | Virtual Switch |
| VSWR | Voltage Standing Wave Ratio |
| VTAM | Virtual Table Access Method |
| VTAM | Virtual Telecommunications Access Method |
| VTL | virtual tape library |
| VTOC | Volume Table of Contents |
| VTP | Vlan Trunking Protocol |
| VTS | virtual tape subsystem |
| VT-x/i or d or c | Virtualization Technology-Itanium |
| VTY | Virtual teleTYpewriter |
| VUE | Visual User Environment |
| VVM | Veritas Volume Manager |
| VVR | Veritas Volume Replicator |
| VWE | virtual work environment |
| VWIC | Voice/Wan Interface Card |
| VWS | Virtual Web Server |
| VxD / VDD | Virtual Device Driver |
| W3C | World Wide Web Consortium |
| W3C | World Wide Web Consortium |
| WAA | Wide Area Adapter |
| WAAS | Wide Area Augmentation System |
| WAB | Windows Address Book |
| WAC | Wholesale Applications Community |
| WACK / WAK | Wait acknowledgement |
| WADS | write-ahead data set |
| WAE | Wireless Application Environment |
| WAF | Web application firewall |
| WAI-ARIA | Web Accessibility Initiative - Accessible Rich Internet Applications |
| WAIS | Wide Area Information Servers |
| WAL | wats access line |
| WALE | wats access line extension |
| WAMP | Windows, Apache, Mysql, PHP (or Perl or Phyton) |
| WAN | wide area network |
| WAN | Wide-area network |
| WAP | wireless application protocol |
| WAP | Wireless Application Protocol |
| WARIA | Workflow And Reengineering International Association |
| WAS | Web Application Server |
| WATS | Wide Area Telecommunications/Telephone Service |
| WAVE | Engine |
| WAVE | Wide Area Virtualization |
| WBEM | Web-Based Enterprise Management |
| WBMP | Wireless BitMaP |
| WCF | Windows Communication Foundation |
| WCS | Web customer service |
| WCS | Websphere Commerce Server |
| WD | Western Digital |
| WDDM | Windows Display Driver Model |
| WDDX | Web Distributed Data Exchange |
| WDF | Windows Driver Foundation |
| WDM | Wavelength Division Multiplexing |
| WDOG | Watchdog protocol |
| WDS | Wireless Distribution System |
| WDT | watchdog timer |
| WebCam | WEB CAMera |
| WebDAV | Web-based Distributed Authoring and Versioning |
| webinar | (web seminar) |
| WEEE | Waste Electrical and Electronic Equipment |
| WEP | wired equivalent privacy |
| WEP | Wired Equivalent Privacy |
| WES | Websense Email Security |
| WFM | Wired For Management Baseline |
| WfMC | WorkFlow Management Coalition |
| WFO | workforce optimization |
| WFQ | weighted fair queuing |
| WGA | Windows Genuine Advantage |
| WHISPER | Windows Highly Intelligent SPEech Recognition |
| WHQL | Windows Hardware Quality Lab |
| WIA | Windows Image Acquisition |
| WiBro | Wireless Broadband |
| WIC | Wan Interface Card |
| WIFI | wireless fidelity |
| Wi-Fi | IEEE 802.11 (Wi-Fi Alliance) |
| Wi-Fi | Wireless Fidelity |
| wiki | What I Know Is |
| WiMax | World Interoperability for Microwave Access |
| WIMPS | windows, icons, menus, pointers, scroll bars |
| WINE | Wine Is Not an Emulator |
| WinFS | Windows Future Storage |
| Winkey | Windows key |
| WINS | windows internet name service |
| WINS | Windows Internet Name Service |
| Winsock | Windows sockets |
| Wintel (slang) | Windows and Intel |
| WIPO | World Intellectual Properties Organization |
| WLAN | wireless local area network |
| WLAN | wireless LAN |
| WLL | wireless local loop |
| WMI | Windows Management Instrumentation |
| WML | Website Meta Language |
| WML | Wireless Markup Language |
| WMOS | Warehouse Management for Open Systems |
| WMP | Windows Media Player |
| WMS | warehouse management system |
| WOA | Web-oriented architecture |
| WOL | Wake On LAN |
| WORM | write once, read many |
| WOS | Wireless Office Systems |
| WOSA | Windows Open Service Architecture |
| WOW | World of Warcraft |
| WOW | World Organization of Webmasters |
| WPA | wireless protected access |
| WPA | Wi-Fi Protected Access |
| WPAD | Web Proxy AutoDiscovery |
| WPAR | Workload PARtition |
| WPF | Windows Presentation Foundation |
| WPLO | Warranty Parts/Labor/Onsite |
| wpm | Words Per Minute |
| WPN | Worldwide Port Name |
| WQUXGA | Wide Quad Ultra eXtended Graphics Array |
| WRC | World Radiocommunication Conference |
| WRED | Weighted Random Early Detection |
| WRS | Wind River Systems |
| WRT | Weighted Risk Trend |
| WSC | Windows Security Center |
| WSD | white space device |
| WSE | Web Services Enhancements |
| WSFC | Windows Server Failover Clustering |
| WSJ | Wall Street Journal |
| WSP | Web Standards Project |
| WSP | Wireless Session Protocol |
| WSS | Windows Sharepoint Services |
| WS-Secuirty | Web Services Security |
| WTG | Wily Transaction Generator |
| WTL | Windows Template Library |
| WTLS | Wireless Transport Layer Security |
| WTX | Workstation Technology eXtended |
| WUS | Windows Update Services |
| WUXGA | wide ultra extended graphics array |
| WVA | Wide Viewing Angle |
| WWAN | wireless wide-area network |
| WWN | World wide name |
| WWNN | worldwide node name |
| WWPN | worldwide port name |
| www | World Wide Web |
| WYSIWYG | what you see is what you get |
| WZC | Wireless Zero Configuration |
| X3D | Extensible 3D Graphics |
| x86 | 8086 processor |
| XaaS | anything as a service |
| XACML | Extensible Access Control Markup Language |
| XAF | eXpressApplication Framework |
| XAMPP | Cross-platform/Apache/MySQL/PHP/Perl |
| XBL | XMLÂ Binding Language |
| XBMC | XBox Media Center |
| XBRL | Extensible Business Reporting Language |
| XCP | eXtended Copy Protection |
| XDCC | Xabi DCC or eXtended DCC |
| XDE | eXtended Development Experience |
| XDM | X Display Manager |
| XDO | extended data object |
| XDR | eXternal Data Representation |
| xDSL | x digital subscriber line |
| XE | Express Edition |
| XFDL | Extensible Forms Description Language |
| XFN | XHTML Friends Network |
| xfr | transfer |
| XGA | extended graphics array |
| XGA | Extended Graphics Array |
| XHR | XmlHttpRequest |
| XHTML | Extensible Hypertext Markup Language |
| XID | exchange identification |
| XID | exchange station ID |
| XIL | X Imaging Library |
| XLF | Extensible Log Format |
| XLL | Extensible Linking Language |
| XLS | eXceL Spreadsheet |
| XMCL | Extensible Media Commerce Language |
| XMI | XML Metadata Interchange |
| XML | Extensible Markup Language |
| XML | Extensible Markup Language |
| XMLC | eXtensible Markup Language Compiler |
| XMLRPC | XML Remote Procedure Call |
| XMP | eXtensible Metadata Platform |
| XMPP | eXtensible Messaging and Presence Protocol |
| XMS | Extended Memory Specification |
| XMS | Xirrus Management System |
| xmt | transmit |
| XNI | Xerces Native Interface |
| XNRL | Xml Namespace Related-resource language |
| XNS | Xerox Network Systems |
| XO | crystal oscillator |
| XOFF | Transmitter off |
| XoIP | Anything Over IP |
| XON | Transmitter on |
| XOP | Xml-binary Optimized Packaging |
| XOR | exclusive-OR gate |
| XP | eXPerience |
| XP | Extreme Programming |
| XPath | XML Path Language |
| XPFE | Cross Platform Front End |
| xPGK | xPEERience gatekeeper/proxy |
| XPL | Carrier Private Line |
| XPLINK | Extra Performance Linkage |
| XPS | Xml Paper Specification |
| XQL | XML Query Language |
| XRC | extended remote copy |
| XRE | Xul Runtime Engine |
| XrML | Extensible Rights Markup Language |
| XRST | extended restart |
| XSD | Xml Schema Definition |
| XSL | extensible Stylesheet Language |
| XSLT | eXtensible Style Language Transformation |
| XSS | Cross-Site Scripting |
| XT | crosstalk |
| XT | Extended Technology |
| XTI | UNIX Transport Layer Interface |
| XTM | Extensible Threat Management |
| XTP | Extreme transaction processing |
| XTPP | extreme transaction processing platform |
| XTR | Efficient Compact Subgroup Trace Representation |
| XTR | Extreme Reality |
| XUL | eXtensible User-interface Language |
| xVM | intersection (x) of virtualization and management |
| XVT | Extensible Virtual Toolkit |
| XWB | eXtend WorkBench |
| XWSS | Xml and WebServices Security |
| Y2K | Year 2000 |
| YA- | Yet Another |
| yacc | yet another compiler compiler |
| YAHU | Yet Another Header Utility |
| YAST | Yet Another Setup Tool |
| YB | Yottabyte |
| YES | Yahoo! Enterprise Solutions |
| YiB | Yobibyte |
| YIM | Yahoo! Instant Messenger |
| YKYBHTLW | you know you’ve been hacking too long when |
| YMMV | our mileage may vary |
| YP | Yellow Pages |
| YPN | Yahoo Publishers Network |
| YUB | luminance (Y) chroma (UV) |
| YYYY-MM-DD | Year Year Year Year - Month Month - Day Day |
| ZAPP | Zero Assignment Parallel Processor |
| ZAW | Zero Administration Window |
| ZB | Zettabyte |
| ZBR | Zero Bug Release |
| ZBR / ZCAV | Zoned-bit recording / Zone Constant Angular Velocity |
| ZBTSI | Zero Byte Time Slot Interchange |
| ZCS | zero code suppression |
| ZCT | zero count table |
| ZDBop | Ziff-Davis Benchmark Operation |
| ZDL | Zero Delay Lockout |
| ZDN / ZDNet | Ziff Davis Network |
| ZDO | ZigBee Device Object |
| Zeroconf | zero configuration (IP networking) |
| ZFS | Zettabyte File System |
| ZIF | zero-insertion-force |
| ZIF | Zero Insertion Force |
| ZIL | Zork Implementation Language |
| zine | electronic magazine |
| ZINK | Zero INK |
| ZIP | zigzag inline package |
| ZIP | Zone Information Protocol |
| ZLE | zero-latency enterprise |
| ZMA | Zone Multicast Address |
| ZNA | Zero Network Administration |
| ZOPE | Z Object Publishing Environment |
| ZRTP | (Zimmerman ) Real-Time Transport Protocol |
| zsh | Z shell |
| ZTE | Zhong Xing Telecommunication Equipment |
| ZTLP | Zero Transmission Level Point |
| ZV port / ZVP | Zoomed Video port |
| ZZFS | zSeries File System |
That's all for this article. If you liked the article, please share it with friends through your favorite social channel.
By ComputerNetworkingNotes Updated on 2026-01-24