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.What command is used to manually determine which router on a LAN will become the DR?
2.What parameter is used to calculate the metric of a link in OSPF on a Cisco router?
3.It is possible to have more than one OSPF process on a router. How would you do this?
4.The address has been allocated to an interface on the router. This interface alone is to be included in the OSPF process. State the command that would start the process on this interface.
5.The metric used by OSPF is cost. How would you change the metric on an interface?
6.What command shows which router on a LAN is the BDR?
7.Explain briefly what show ip ospf database will reveal.
8.What command is used to show the state of adjacencies?
9.Which command is used to show OSPF packets being sent and received in real time?
10.How would you show the OSPF process ID of the router?
11.What is the sequence number and where is it held?
12.In the show ip ospf command, there is a field called the SPF schedule delay. What is the purpose of this field, and what is the default time?
13.What is the advantage of the command show ip ospf interface in troubleshooting?