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.Which of the following is not a valid OSPF network type configuration option?
            Router(config-if)# ip ospf network broadcast
            Router(config-if)# ip ospf network non-broadcast
            Router(config-if)# ip ospf network point-to-multipoint broadcast
            Router(config-if)# ip ospf network point-to-multipoint non-broadcast

2.What command is used to determine manually which router on a LAN will become the DR?
3.How many subnets are required in an OSPF configuration for a router with multiple point-to-point connections?
4.What command is used to support a point-to-multipoint OSPF network topology on nonbroadcast media?
5.What are the three keyword options for the neighbor command?
6.What OSPF network types include a DR election?
7.With all OSPF network types, the default settings have the dead interval configured as a multiple of the hello interval. What is the multiple?
8.Which NBMA configuration options are Cisco-specific?
9.What is the difference between a point-to-point interface and a multipoint interface?
10.What is the default OSPF network type for a physical serial interface on a Cisco router?