CHAPTER 20

Essentials of Networking

In this chapter, you will learn how to

•   Describe the basic roles of various networked computers

•   Discuss network technologies and Ethernet

•   Describe the differences between a LAN and a WAN and the importance of TCP/IP

It’s hard to find a computer that’s not connected to a network. Whether you’re talking about a workstation that’s part of a large enterprise network or discussing that smartphone in your pocket, every computer has some form of network connection. CompTIA has added quite a bit of networking coverage to the CompTIA A+ exams.

This chapter dives into networks in detail, especially the underlying hardware and technologies that make up the bulk of networks in today’s homes and businesses. ...

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