The questions and scenarios in this book are designed to be challenging and to make sure that you know the answer. Rather than allowing you to derive the answers from clues hidden inside the questions themselves, the questions challenge your understanding and recall of the subject.

You can find the answers to these questions in Appendix A. For more practice with exam-like question formats, use the exam engine on the CD-ROM.

1.Imagine a router that has two interfaces—fastethernet 0/0 is and serial 0/0 is Nominally, EIGRP would be run with the "network" command, which would enable both interfaces. There are two ways discussed in this chapter that could be used to specify that one interface run EIGRP and not the other. What are those two techniques?
2.What is the preferred configuration for a hybrid multipoint NBMA network when one VC has a CIR of 56 kbps and the other five VCs each have a CIR of 256 kbps?
3.Four Frame Relay PVCs exist on a multipoint interface. On the multipoint interface, the command bandwidth 224 is used. How much bandwidth will EIGRP assign to each PVC, and how much of that amount will EIGRP use for advertisements?
4.Explain the purpose of the command no auto-summary.
5.Explain the meaning of the command ip bandwidth-percent eigrp 63 100.
6.How long is the default hold time?
7.How is the variance command used?
8.What command is used to display the passive and active state of the routes?
9.What command is used in EIGRP to perform manual summarization?
10.Which command is used to display all types of EIGRP packets that are both received and sent by a router?
11.What problems can you solve by configuring summarization?
12.Why would you configure an EIGRP router as a stub router?
13.Explain the parameters receive-only, connected, static, and summary used in the command eigrp stub:
router(config-router)# eigrp stub [receive-only | connected | static | summary]

14.When configuring the variance command, which routes can be used?
15.Give two reasons why you might wish to change the hello timer.
16.If a multipoint serial interface uses five PVCs with CIRs of 56-, 128-, 128-, 128-, and 256-kbps, how should the bandwidth command be implemented on the interface?
17.On what occasions should you consider configuring the bandwidth on subinterfaces?