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CCCENT/CCNA ICND1 100-105 Official Certification Guide, First Edition by Wendell Odom

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Appendix P. Implementing Point-to-Point WANs

Leased line WANs—also known as serial links—require much less thought than many other topics, at least to the depth required for the CCENT and CCNA R&S exams. That simplicity allows the Cisco exams to discuss leased lines briefly for the ICND1 exam, while using leased lines as part of larger discussions of IP routing.

This chapter finally takes the discussion of leased line WANs deeper than has been discussed so far. This chapter briefly repeats the leased line concepts from the ICND1 book to lay a foundation to discuss other concepts. More importantly, this chapter looks at the configuration, verification, and troubleshooting steps for leased lines that use the familiar High-level Data Link Control ...

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