In this section we would introduces you to internetworking. You will learn the basics of the Open Systems Interconnection (OSI) model the way Cisco wants you to learn it. Ethernet networking and standards are discussed in detail.

This in-depth section covers the very beginnings of the Internet Protocol stack and then goes all the way to IP addressing and understanding the difference between a network address and a broadcast address before finally ending with network troubleshooting.

In first article we would discuss the advantage of OSI layer. Later we would cover each layer in depth so you can understand every aspect of layer model. Pay more attention on these articles as CCNA cover several questions from this model. Before moving on next category be assure that you didn't skip any topics from this category.