2.7.5 Module Quiz – Single-Area OSPFv2 Configuration

Which criterion is preferred by the router to choose a router ID?

• • the IP address of the highest configured loopback interface on the router

• • the IP address of the highest active OSPF-enabled interface

• • the router-id rid command

• • the IP address of the highest active interface on the router

Which wildcard mask would be used to advertise the 192.168.5.96/27 network as part of an OSPF configuration?

• • 0.0.0.32

• • 255.255.255.224

• • 0.0.0.31

• • 255.255.255.223

The following three networks are directly connected to an OSPF router; 192.168.0.0/24, 192.168.1.0/24, and 192.168.2.0/24. Which OSPF network command would advertise only the 192.168.1.0 network to neighbors?

• • router(config-router)# network 192.168.1.0 0.0.0.0 area 0

• • router(config-router)# network 192.168.1.0 0.0.0.255 area 0

• outer(config-router)# network 192.168.1.0 255.255.255.255 area 0

• • router(config-router)# network 192.168.0.0 0.0.15.255 area 0

Which three parameters should match in order for a pair of routers to form an adjacency when running OSPFv2? (Choose three.)

• • OSPFv2 process number

• • OSPFv2 type of network

• • router ID

• • hello timer

• • subnet mask

What are two features of the OSPF routing protocol? (Choose two.)

• • used primarily as an EGP

• • uses Dijkstra’s algorithm to build the SPF tree

• • has an administrative distance of 100

• • calculates its metric using bandwidth

• • automatically summarizes networks at the classful boundaries

A router with two LAN interfaces, two WAN interfaces, and one configured loopback interface is operating with OSPF as its routing protocol. What does the router OSPF process use to assign the router ID?

• • the loopback interface IP address

• • the highest IP address on the LAN interfaces

• • the highest IP address that is configured on the WAN interfaces

• • the IP address of the interface that is configured with priority 0

Which verification command would identify the specific interfaces on a router that were configured with the passive-interface command?

• • show ip protocols

• • show ip eigrp neighbors

• • show ip interface brief

• • show ip route eigrp

Which command, if applied on an OSPF router, would give a Gigabit Ethernet interface a lower cost than a Fast Ethernet interface?

• • (config-if)# bandwidth 100

• • (config-if)# ip ospf priority 1

• (config-router)# auto-cost reference-bandwidth 1000

• • (config-if)# ip ospf cost 100

A network administrator has just changed the router ID on a router that is working in an OSPFv2 environment. What should the administrator do to reset the adjacencies and use the new router ID?

• • Configure the network statements.

• • Change the OSPFv2 process ID.

• • Issue the clear ip ospf process privileged mode command.

• • Change the interface priority.

Which command can be used to view the OSPF hello and dead time intervals?

• • show ip ospf route

• • show ip ospf interface

• • show ip protocols

• how ip ospf neighbor