CHAPTER 1

Network Models

The CompTIA Network+ certification exam expects you to know how to

•   1.2 Explain devices, applications, protocols and services at their appropriate OSI layers

•   1.3 Explain the concepts and characteristics of routing and switching

To achieve these goals, you must be able to

•   Describe how models such as the OSI seven-layer model and the TCP/IP model help technicians understand and troubleshoot networks

•   Explain the major functions of networks with the OSI seven-layer model

•   Describe the major functions of networks with the TCP/IP model

The CompTIA Network+ certification challenges you to understand virtually every aspect of networking—not a small task. Networking professionals use one of two methods to ...

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