(Part 2/3) Modules 1 – 2: OSPF Concepts and Configuration

20. Refer to the exhibit. Which three statements describe the results of the OSPF election process of the topology that is shown in the exhibit? (Choose three.)

• R3 will be elected BDR.

• • The R4 FastEthernet 0/0 priority is 128.

• The R4 router ID is 172.16.1.1.

• • R1 will be elected BDR.

• R2 will be elected DR.

21. Refer to the exhibit. If the switch reboots and all routers have to re-establish OSPF adjacencies, which routers will become the new DR and BDR?

• Router R4 will become the DR and router R1 will become the BDR.

• • Router R2 will become the DR and router R3 will become the BDR.

• • Router R1 will become the DR and router R2 will become the BDR.

• • Router R4 will become the DR and router R3 will become the BDR.

22. By default, what is the OSPF cost for any link with a bandwidth of 100 Mb/s or greater?

• • 100000000

• • 10000

• 1

• • 100

23. Refer to the exhibit. What is the OSPF cost to reach the router A LAN 172.16.1.0/24 from B?

• 782

• 74

• 128

• 65

24. Refer to the exhibit. On which router or routers would a default route be statically configured in a corporate environment that uses single area OSPF as the routing protocol?

• • R0-A

• • ISP, R0-A, R0-B, and R0-C

• • ISP

• • R0-B and R0-C

• • ISP and R0-A

25. What command would be used to determine if a routing protocol-initiated relationship had been made with an adjacent router?

• • ping

• show ip ospf neighbor

• • show ip interface brief

• • show ip protocols

26. Refer to the exhibit. Which command did an administrator issue to produce this output?

• R1# show ip ospf interface serial0/0/1

• • R1# show ip route ospf

• • R1# show ip ospf

• • R1# show ip ospf neighbor

27. Which command is used to verify that OSPF is enabled and also provides a list of the networks that are being advertised by the network?​

• • show ip interface brief

• • show ip ospf interface

• show ip protocols

• • show ip route ospf

28. Refer to the exhibit. A network administrator has configured OSPFv2 on the two Cisco routers but PC1 is unable to connect to PC2. What is the most likely problem?

• Interface Fa0/0 has not been activated for OSPFv2 on router R2.

• • Interface Fa0/0 is configured as a passive-interface on router R2.

• • Interface S0/0 is configured as a passive-interface on router R2.

• • Interface s0/0 has not been activated for OSPFv2 on router R2.

29. What is the recommended Cisco best practice for configuring an OSPF-enabled router so that each router can be easily identified when troubleshooting routing issues?

• Configure a value using the router-id command.

• • Use the highest active interface IP address that is configured on the router.

• • Use a loopback interface configured with the highest IP address on the router.

• • Use the highest IP address assigned to an active interface participating in the routing process.