6.7. Answers to Review Questions

  1. B. Hello messages are used to provide neighbor discovery and populate the neighbor table.

  2. A. Backbone area must be 0.

  3. D. In OSPF, the router that connects areas together is called the ABR

  4. C. The ASBR uses LSA type 5.

  5. C. An NSSA allows the inclusion of an ASBR.

  6. A. More than one process may be enabled; however, they will not route to each other without redistribution

  7. A. IS-IS uses the OSI protocol CLNS.

  8. B. Cisco only supports two levels of routing (Levels 1 and 2) even though IS-IS has four total levels of routing.

  9. D. IS-IS has the prefix of 49 specified for private areas.

  10. A. IS-IS uses less processing power because it sends few updates.

Get Cisco® Network Professional's: Advanced Internetworking Guide now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.

Start your free trial