Review Questions

Answer the following questions, and then see Appendix A for the answers.

1. In what situations could static routing be preferred over dynamic routing?

2. What do dynamic routing protocols do?

3. Which type of routing protocol is used for interconnecting autonomous systems?

4. Do IGPs or EGPs typically converge faster?

5. What is BGP multihoming?

6. How do distance vector and link-state routing protocols differ?

7. What are triggered updates?

8. What parameters do the following routing protocols use in their metric calculation by default?

9. What is convergence?

10. How does the speed of convergence affect the network?

11. What is an advantage of a hierarchical network versus a flat network?

12. A large organization has decided to connect its branch offices to the appropriate regional offices. Each regional office has a minimum of two and a maximum of five branch offices with which it will connect. Each branch office uses low-end routers that will directly connect to their regional office router via a Frame Relay permanent virtual circuit link, effectively creating a hub-and-spoke topology (star network). No physical connections exist between the branch office routers. OSPF is run in the rest of the network, but the routing protocol that runs between the regional office and the branch offices does not need to be OSPF. Select the two best options for use between the regional and branch offices:

a. Deploy EIGRP in both directions.

b. Deploy IS-IS in both directions.

c. Deploy OSPF in both directions.

d. Use static routes in both directions, with a default static route from each branch to the regional office, and static routes on each regional router toward the branch networks.

13. A network consists of links with varying bandwidths. Would RIPv2 be a good routing protocol choice in this network? Why or why not?

14. What are some features of EIGRP that make it an appropriate choice for an enterprise routing protocol?

15. What is an EIGRP feasible successor?

16. Does OSPF support manual route summarization on all routers?

17. What is an OSPF LSA?

18. What is the OSPF metric?

19. For what network layer protocols does Integrated IS-IS provide support?

20. What is the difference between an Integrated IS-IS backbone and an OSPF backbone?

21. Why might Integrated IS-IS be better than OSPF in a very large network?

22. What is the main use of BGP?

23. Which routing protocols are likely to be used in an enterprise Campus Core?

24. Is IS-IS typically a good choice of routing protocol for the Building Distribution layer?

25. What is route redistribution?

26. Which parts of the Enterprise Architecture are likely to implement redistribution?

27. What is route filtering?

28. When is route filtering required?

29. Why does redistributing from an IGP into BGP require caution?

30. What is route summarization, and why would a network need it?

31. What is a passive interface?

This chapter introduces voice design principles and contains the following sections:

Traditional Voice Architectures and Features

Integrating Voice Architectures

Voice Issues and Requirements

Introduction to Voice Traffic Engineering



Case Study: ACMC Hospital Network Voice Design

Review Questions

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