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Sams Teach Yourself Networking in 24 Hours, Fourth Edition by Uyless Black

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HOUR 6Extending LANs with Wide Area Networks (WANs)

What You’ll Learn in This Hour:

The definition of a wide area network (WAN)

Components of a WAN

Key network interfaces

Using carrier providers for the local interface: telephone (T-carrier systems and digital subscriber line, or DSL), cable, and satellite services

Broadband WAN carrier systems

How the Internet can help you assemble your WAN

Networks are often distributed over a wide geographical area, which may encompass too great a distance to tie them together with local area network (LAN) hardware and software. If LANs situated in remote locations need to be connected, they are interworked with a WAN. Of course, this concept assumes the WAN components are selected, assembled, ...

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