Chapter 1

Protocols and Layers


In this chapter, you will learn about the protocol stack used on the global public Internet and how these protocols have been evolving in today’s world. We’ll review some key basic definitions and see the network used to illustrate all of the examples in this book, as well as the packet content, the role that hosts and routers play on the network, and how graphic user and command line interfaces (GUI and CLI, respectively) both are used to interact with devices.

You will learn about standards organizations and the development of TCP/IP RFCs. We’ll cover encapsulation and how TCP/IP layers interact on a network.


TCP/IP; RFCs; protocol layers; networking; Ethernet LANs; CLI; FTP; routers

What You Will ...

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