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CCNA Practice Questions (Exam 640-802), Third Edition by Jeremy CCIE No. 11727 Cioara

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Answers and Explanations

  1. D. Cisco serial ports connect to a CSU/DSU unit using a proprietary DB-60 connector. Newer serial ports that are able to fit two serial interfaces per WIC card use “smart serial” connector types. Answers A, B, and C are industry standard CSU/DSU connectors. A Cisco serial cable will have a DB-60 connection on one end of the cable (which connects to the router) and an industry standard connector on the other end of the cable (which connects to the CSU/DSU).

  2.  

    Figure 6.3. Network diagram.

  3. B. Frame Relay (and all other WAN technologies) represents a data link layer technology, just as Ethernet represents a data link layer ...

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