To make a baseband network practical for many computers to share, the data transmitted by each system is broken up into separate units called packets. When your computer transmits data it might be broken up into many packets, and the computer transmits each packet separately. When all of the packets constituting a particular transmission reach their destination, the receiving computer reassembles them back into original data. This is the basis for a packet-switching network.
Circuit-switching means that the two systems wanting to communicate establish a circuit before they transmit any information. That circuit remains open throughout the life of the exchange, and is only broken when the two systems are finished communicating. Circuit switching is more common in environments like the public switched telephone network (PSTN), in which the connection between your telephone and that of the person you're calling remains open for the entire duration of the call.
In half-duplex communication data travels in only one direction at a time.
In full-duplex mode two systems that can communicate in both directions simultaneously are operating.
UTP cable comes in a variety of different grades, called "categories" by the Electronics Industry Association (EIA) and the Telecommunications Industry Association (TIA), the combination being referred to as EIA/TIA.
A cooperative trade association responsible for the "Commercial Building Telecommunication Cabling Standard," also known as EIA/TIA 568, which specifies how network cables should be installed in a commercial site.
The progressive weakening of a signal as it travels over a cable or other medium. The longer the distance a signal travels, the weaker the signal gets, until it becomes unreadable by the receiving system
A type of signal interference caused by signals transmitted on one pair of wires bleeding over into the other pairs. Crosstalk can cause network signals to degrade, eventually rendering them unviable.
A straight-through cable is used for DTE-to-DCE connections.
Crossover cables should by used when you connect a DTE to another DTE or a DCE to another DCE.
RJ-11 ( Registered Jack-11) a four- or six-wire connector primarily used to connect telephone equipment.
RJ-45 (Registered Jack-45) connector is an eight-wire connector that is commonly used to connect computers to a local area network (LAN), particularly Ethernet LANs.
AUI( Attachment Unit Interface.) is the part of the Ethernet standard that specifies how a Thicknet cable is to be connected to an Ethernet card. AUI specifies a coaxial cable connected to a transceiver that plugs into a 15-pin socket on the network interface card (NIC).
BNC stand for British Naval Connector (or Bayonet Nut Connector or Bayonet Neill Concelman)a type of connector used with coaxial cables such as RG-58.BNC connectors are used on both Thicknet and Thinnet.
A set of standards that define all operations within a network. There are various protocols that operate at various levels of the OSI network model such as transport protocols include TCP.
The International Organization for Standardization (ISO) developed the Open Systems Interconnection (OSI) Reference Model to describe how information is transferred from one machine to another.
Micro segmentation is a term used with switches when each networking device has its own dedicated port on a switch.
Transport layer assigns a unique set of numbers for each connection. These numbers are called port or socket numbers TCP, and UDP, provide a multiplexing function for a device: This allows multiple applications to simultaneously send and receive data.
Lan Card Test Sheet
|Also know as Ethernet Card, or NIC Network interface card.|
|In device manage||Reason||In LAN card properties|
|Yellow sign||Driver not installed||Will not show|
|Red Cross||Disable||Show with disable status|
|No Ethernet option||Physical not installed||Will not show|
At Command Prompt
|C:/> ipconfig |
Possible out put
|IP address of computer||Everything is fine|
|Windows ip Configuration||Either media is disconnected or LAN disable|
|C:/> ping <Remote computer ip>|
|Used to check the physical connectivity|
|Possible out put|
|Reply From .....||Host is up and operational|
|Request time out||Either firewall is on remote desktop or network plug is loose|
|Destination net unreachable||There is no route to reach to the remote network|
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