July 2013
Intermediate to advanced
496 pages
6h 10m
English
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Section 10. WAN Technologies
Wide-area networks (WAN) connect local-area networks (LAN) that are separated over a geographic distance. WANs usually connect networks through a third-party carrier. These third-party companies are usually telephone or cable companies. The third-party carrier charges the company that connects the networks a monthly fee for the WAN connections.
Currently, several WAN implementations exist. These include point-to-point leased lines, packet-switched lines, and circuit-switched lines. Also, carriers are offering newer implementations such as Ethernet emulation. The ICND1 exam focuses on WAN connectivity over Ethernet emulation; serial connectivity is covered in ICND2.
This section will also introduce you to dynamic routing ...
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