General Networking Topics

Chapter 2 covers general networking technologies, including an overview of the OSI model, switching concepts, and routing protocols. The TCP/IP model is presented and explained with common applications used in today's IP networks. Routing protocols and sample configurations are presented to ensure that you have a good understanding of how Cisco IOS routes IP datagrams. Concluding this chapter is a discussion of some of today's most widely used WAN protocols, including PPP, ISDN, and Frame Relay. Keep in mind that the CCIE Security exam covers routing and switching topics as well as security topics. See the exam topics listed in Chapter 1 for more details.

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