QUESTION NO: 61
One of the most important characteristics of OSPF is Multiple areas. Which statement best describes why this feature is such an important enhancement to earlier routing protocols?
A. The network domain, when divided into areas, allows for the use of both IANA classful addressing and private addressing.
B. The use of multiple areas allows for the use of prioritization.
C. All computation is kept within the area, with minimum communication between the areas, allowing the network to scale to larger sizes.
D. It is easier to implement security.
QUESTION NO: 62
What are two Cisco IOS commands that can be used to view neighbor adjacencies? (Choose two.)
A. show ip ospf database
B. show ip ospf neighbors
C. show ip ospf protocols
D. show ip ospf interfaces
QUESTION NO: 63
Refer to the exhibit. Which statement is true?Select the best response.
A. Router RTA is directly connected to interface 192.168.45.1.
B. Neighbor 192.168.45.1 has changed its OSPF priority number.
C. Router RTA and neighbor 192.168.45.2 are exchanging OSPF LSAs.
D. Router RTA is the BDR.
QUESTION NO: 64
Which two statements are true of the OSPF link-state routing protocol? (Choose two.) Select 2 response(s). A. Using the Bellman-Ford algorithm, each OSPF router independently calculates its best paths to all destinations in the network.
B. Using the DUAL algorithm, each OSPF router independently calculates its best paths to all destinations in the network.
C. OSPF sends summaries of individual link-state entries every 30 minutes to ensure LSDB synchronization.
D. OSPF sends triggered updates when a network change occurs.
E. OSPF sends updates every 10 seconds.
F. When a link changes state, the router that detected the change creates a link-state advertisement (LSA) and propagates it to all OSPF devices using the 126.96.36.199 multicast address.
The point of this question is the basis of OSPF.
Incorrect answer A. OSPF send hello packets every 10 seconds, not the updates, OSPF sends triggered updates when a network change occurs. For OSPF, D Rother use the multicast address 188.8.131.52 to send packets to DR and BDR, only DR and BDR can get the information from this multicast address.
QUESTION NO: 65
OSPF is configured over a Frame Relay network as shown in the exhibit. All PVCs are active. However, R1 and R3 fail to see all OSPF routes in their routing tables. The show ip ospf neighbor command executed on R2 shows the state of the neighbors. What should be done to fix the problem? Select the best response.
A. The ip ospf network non-broadcast command should be configured on each Frame Relay interface.
B. The ip ospf network broadcast command should be configured on each Frame Relay interface.
C. The neighbor command should be configured under the OSPF routing process on all routers.
D. The ip ospf priority value on the hub router should be set to 0.
E. The ip ospf priority value on the spoke routers should be set to 0.
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