Introduction to Networks Companion Guide v6 is the official supplemental textbook for the Introduction to Networks course in the Cisco(R) Networking Academy(R) CCNA(R) Routing and Switching curriculum.

The course introduces the architecture, structure, functions, components, and models of the Internet and computer networks. The principles of IP addressing and fundamentals of Ethernet concepts, media, and operations are introduced to provide a foundation for the curriculum. By the end...

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