Module-13 Chapter 2: Single-Area OSPFv2 Configuration (Cisco)

True or False? In the router ospf process-id command, the process ID value, which can any number between 1 and 65,535, is locally significant. It must be the same on all routers in the OSPF area.

True

False

False

Which of the following applies to the router ID? (Choose two)

a. The router ID cannot be defined by an administrator.

b. The router ID is not used to determine the BDR.

c. The router ID is used to determine the DR.

d. The router ID uniquely identifies the router.

e. The router ID is not required.

c. The router ID is used to determine the DR.

d. The router ID uniquely identifies the router.

Which of the following is the order of precedence for choosing the router ID?

a.

1. Router ID that is explicitly configured
2. Lowest IPv4 loopback address
3. Lowest active configured IPv4 address

b.

1. Router ID that is explicitly configured
2. Lowest active configured IPv4 address
3. Lowest IPv4 loopback address

c.

1. Router ID that is explicitly configured
2. Highest IPv4 loopback address
3. Highest active configured IPv4 address

d.

1. Highest IPv4 loopback address
2. Router ID that is explicitly configured
3. Highest active configured IPv4 address

e.

1. Highest IPv4 loopback address
2. Highest active configured IPv4 address
3. Router ID that is explicitly configured

c.

1. Router ID that is explicitly configured
2. Highest IPv4 loopback address
3. Highest active configured IPv4 address

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

a. The IP address of the highest configured loopback interface on the router

b. The IP address of the highest active interface on the router

c. The router-id rid command

d. The IP address of the highest active OSPF-enabled interface

c. The router-id rid command

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

a. 0.0.0.32

b. 0.0.0.31

c. 255.255.255.224

d. 255.255.255.223

b. 0.0.0.31

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?

a. Router(config-router)# network 192.168.1.0 0.0.0.255 area 0

b. Router(config-router)# network 192.168.0.0 0.0.15.255 area 0

c. Router(config-router)# network 192.168.1.0 255.255.255.255 area 0

d. Router(config-router)# network 192.168.1.0 0.0.0.0 area 0

a. Router(config-router)# network 192.168.1.0 0.0.0.255 area 0

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

a. Router ID

b. OSPFv2 process number

c. OSPFv2 type of network

d. Hello timer

e. Interface priority

f. Subnet mask

c. OSPFv2 type of network

d. Hello timer

f. Subnet mask

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

a. Automatically summarizes networks at the classful boundaries

b. Has an administrative distance of 100

c. Calculates its metric using bandwidth

d. Uses Dijkstra's algorithm to build the SPF tree

e. Used primarily as an EGP

c. Calculates its metric using bandwidth

d. Uses Dijkstra's algorithm to build the SPF tree

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?

a. The IP address of the interface that is configured with priority 0

b. The OSPF area ID that is configured on the interface with the highest IP address

c. The loopback interface IP address

d. The highest IP address on the LAN interfaces

e. The highest IP address that is configured on the WAN interfaces

c. The loopback interface IP address

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

a. show ip eigrp neighbors

b. show ip protocols

c. show ip interface brief

d. show ip route eigrp

b. show ip protocols

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

a. (config-if)# bandwidth 100

b. (config-router)# auto-cost reference-bandwidth 1000

c. (config-if)# ip ospf cost 100

d. (config-if)# ip ospf priority 1

b. (config-router)# auto-cost reference-bandwidth 1000

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?

a. Configure the network statements.

b. Change the interface priority.

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

d. Change the OSPFv2 process ID.

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

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

a. show ip protocols

b. show ip ospf neighbor

c. show ip ospf interface

d. show ip ospf route

c. show ip ospf interface

What does the SPF algorithm consider to be the best path to a network?

a. The path with the least number of hops.

b. The path with the smallest delays.

c. The path that includes the fastest cumulative bandwidth links.

d. The path that includes the fastest single bandwidth link.

c. The path that includes the fastest cumulative bandwidth links.

What is one use of the router ID in OSPF routing?

a. The router ID indicates the router priority value.

b. The router ID identifies the OSPF area.

c. The router ID can be used to break a tie in the election process.

d. The router ID indicates the highest IPv4 address of all routers that are participating in OSPF routing.

c. The router ID can be used to break a tie in the election process.

What is the first criterion used by OPSF routers to elect a DR?

a. Highest priority

b. Highest IP address

c. Highest router ID

d. Highest MAC address

a. Highest priority

Which command could be used on a router to ensure that an OSPF adjacency is formed with another router?

a. show ip route

b. show ip protocols

c. show ip ospf interface

d. show ip ospf neighbor

e. show ip interface brief

d. show ip ospf neighbor

A router in an OSPF enterprise network has a default static route that has been configured via the interface that connects to the ISP. Which command would the network administrator apply on this router so that other routers in the OSPF network will use this default route?

a. redistribute static

b. redistribute connected

c. redistribute static subnets

d. default-information originate

d. default-information originate