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The Illustrated Network by Walter Goralski

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CHAPTER 1 Protocols and Layers

What You Will Learn

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 definitons 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.

This book is about what actually happens on a real network running the protocols ...

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