"Do I Know This Already?" Quiz The purpose of the "Do I Know This Already?" quiz is to help you decide what parts of this chapter to use. If you already intend to read the entire chapter, you do not necessarily need to answer these questions now. The 13-question quiz, derived from the major sections in the "Foundation Topics" portion of the chapter, helps you to determine how to spend your limited study time. Table 9-1 outlines the major topics discussed in this chapter and the "Do I Know This Already?" quiz questions that correspond to those topics. Table 9-1. "Do I Know This Already?" Foundation Topics Section-to-Question Mapping | Foundation Topics Section | Questions Covered in This Section | | Required Configuration Commands for a Multiarea OSPF Network | 13 | | Optional Configuration Commands for a Multiarea OSPF Network | 46 | | Verifying the Configuration of OSPF in a Multiarea Network | 710 | | Troubleshooting a Multiarea OSPF Network | 1113 | CAUTION The goal of self-assessment is to gauge your mastery of the topics in this chapter. If you do not know the answer to a question or are only partially sure of the answer, you should mark this question wrong for purposes of the self-assessment. Giving yourself credit for an answer you correctly guess skews your self-assessment results and might provide you with a false sense of security.
| 1: | Which of the following is the correct command for configuring OSPF? -
Router(config)# router ospf process-number -
Router(config)# router ospf router- ID -
Router(config)# router ospf autonomous-system-number -
Router(config-if)# router ospf process-id | | 2: | Which of the following commands is the correct command for placing the subnet 172.16.20.128 in Area 1, and all other subnets within the classful address in Area 0? -
network 172.16.20.128 0.0.0.0 area 1 network 0.0.0.0 255.255.255.255 area 0 -
network 172.16.20.128 0.0.0.255 area 1 network 172.16.0.0 0.0.255.255 area 0 -
network 172.16.20.128 0.0.0.0 area 1 network 172.16.20.0 255.255.255.255 area 0 -
network 172.16.20.128 0.0.0.7 area 1 network 172.16.20.0 255.255.255.255 area 0 | | 3: | Which of the following statements are true about placing subnets into different areas? -
The network command used to assign interfaces and subnets to different areas can be configured on any OSPF router. -
The network command is used at the interface level to assign interfaces and their subnets into different areas. -
The network command uses the subnet mask to identify the portion of the address to consider in assigning areas. -
The network command uses a wildcard mask to identify the portion of the address to consider in assigning areas. | | 4: | Which of the following statements are true of the command summary-address 172.16.20.0 255.255.255.0 ? -
This command would be configured on an ASBR. -
This command is used to summarize routes between areas. -
This command is used to summarize addresses advertised to the outside world. -
This command is configured on ABR routers. | | 5: | Which command would be used on an ABR to configure a cost of a default route propagated into a stub or NSSA area? -
default-cost 30 -
area 1 default-cost 30 -
ip ospf default cost 30 -
ip ospf area 1 default-cost 30 | | 6: | What is the purpose of the command area 3 stub no-summary ? -
To create Area 3 as a totally stubby area -
To create Area 3 as a stub area -
To create Area 3 as an NSSA area -
To restrict summaries passing between areas | | 7: | Which of the following commands shows the correct syntax for defining a virtual link? -
area 1 virtual-link 10.10.10.10 -
ip ospf area 1 virtual-link 10.10.10.10 -
ip ospf virtual-link area 1 -
area 1 virtual-link 10.10.10.0 255.255.255.0 172.16.20.131 255.255.255.0 | | 8: | Which command is used to show the OSPF ABRs and ASBRs for which the internal router has entries in its routing table? -
show ip ospf external routers -
show ip ospf route -
show ip ospf border database -
show ip ospf border-routers | | 9: | Which of the following is the correct command to show virtual links? -
show virtual-links -
show ip ospf virtual-links -
show ip ospf links -
show ip ospf neighbors | | 10: | Which of the following are shown in the show ip ospf database command? -
Router ID number -
Hello timer intervals -
Advertising router ID -
Number of interfaces detected for router | | 11: | If a router configured for OSPF routing is not seeing an OSPF neighbor on an attached network, which of the following actions should be taken? -
Ensure that the OSPF autonomous system number is configured correctly on both ends -
Make sure that both routers are configured with the same IP mask, Interface Hello timer, OSPF Hello interval, and OSPF dead interval -
Make sure that both neighbors are part of the same area and area type -
Ensure the virtual links are configured in the same subnet | | 12: | Which of the following events are shown the debug ip ospf events command? -
Adjacencies -
Designated router selection -
Virtual links -
SPF calculations | | 13: | Which of the following commands is useful for analyzing the messages traveling between the local and remote hosts ? -
show ip ospf traffic -
debug ip ospf data -
debug ip packet -
show ip ospf retransmission-list |
The answers to the "Do I Know This Already?" quiz are found in Appendix A, "Answers to Chapter 'Do I Know This Already?' Quizzes and Q&A Sections." The suggested choices for your next step are as follows : -
6 or less overall score Read the entire chapter. This includes the "Foundation Topics" and "Foundation Summary" sections, the "Q&A" section, and the "Scenarios" at the end of the chapter. -
79 overall score Begin with the "Foundation Summary" section, and then go to the "Q&A" section and the "Scenarios" at the end of the chapter. If you have trouble with these exercises, read the appropriate sections in "Foundation Topics." -
10 or more overall score If you want more review on these topics, skip to the "Foundation Summary" section, and then go to the "Q&A" section and the "Scenarios" at the end of the chapter. Otherwise, move to the next chapter. |
