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Chapter 3. Addressing and Routing

Chapter 3. Addressing and Routing


This chapter covers the following official Network+ objectives:

• Explain the purpose and properties of IP addressing.

• Explain the purpose and properties of routing and switching.

• Identify common TCP and UDP default ports.

• Given a scenario, install and configure routers and switches.

For more information on the official Network+ exam topics, see the “About the Network+ Exam” section in the “Introduction.”


Without question, the TCP/IP suite is the most widely implemented protocol on networks today. As such, it is an important topic on the Network+ exam. To pass the exam, you definitely need to understand the material presented in this chapter.

This chapter deals with the individual protocols within the protocol suite. It looks at the functions of the individual protocols and their purposes. It starts by discussing one of the more complex facets of TCP/IP: addressing.

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