Networking Concepts

Chia sẻ: Vinh Nghi | Ngày: | Loại File: PDF | Số trang:61

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Networking Concepts

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Before considering how to configure Cisco routers and switches, you must be introduced to basic networking concepts you’ll need to understand in order to grasp the advanced concepts discussed in later chapters. The OSI Reference Model is the best place to start, since it will help you understand how information is transferred between networking devices. Of the seven layers in the OSI Reference Model, be especially sure to understand how the bottom three layers function, since most networking devices function at these layers. This chapter discusses information flow, as well as Cisco’s three-tiered hierarchical model, which is used to design scalable, flexible, and easy-to-troubleshoot-and-maintain networks....

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