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The Accidental SysAdmin Handbook: A Primer for Entry Level IT Professionals, Second Edition by Eric Kralicek

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CHAPTER 4

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Network Layer Architecture

Using industry standards and knowing how and where protocols are applied is essential to understanding your network. This chapter presents the basic standards and protocols used in computer networks and provides diagrams to support their use.

The OSI Model1

The OSI model is important for anyone managing networks. It is used to guide the logical and physical structure of network architecture. Knowing what layer is affected by the equipment and software you put in your network helps minimize confusion and simplifies the troubleshooting process. The OSI model is divided into seven specific layers, as shown in ...

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