A. Apply the area 4  stub command to all routers in the area
B. On the ABR, use the area 4 stub command with the no - summary keyword
C. On the ABR, specify a default cost for the area with the area default - cost command
D. On the ABR, use the default - information originate  command to inject a default route into area 4
E. Use the auto - cost command on each router in the area to automatically determine the cost to other OSPF areas

A. Nothing. OSPF will determine the most optimal path for routing data by default.
B. Adjust the hello and dead timers for more rapid detection of link failures.
C. Increase the reference - bandw idth used to calculate the interface default metrics, on all routers in your network.
D. Set the priority values on every broadcast interface to ensure that the designated and backup designated routers are the routers with the most processor and memory  resources.

A. RouterC(config - if)#ip ospf network broadcast   RouterD(config - if)#ip ospf network broadcast
B. RouterC(config - if)#ip ospf network point - to - point   RouterD(config - if)#ip ospf network point - to - point
C. RouterC(config - router)#neighbor 10.100. 100.4   RouterD(config - router)#neighbor 10.100.100.3
D. RouterC(config - router)#neighbor 10.255.255.254   RouterD(config - router)#neighbor 10.255.255.253

A. All interfaces will be in area 0
B. The router will be an ABR with s1/0 in area 0 and f0/0 and 0/1 in area 1
C. The route r will be an ABR with s1/0 in area 0 and f0/0 and 0/1 in area 2
D. The router will be an ABR with s1/0 in area 0, f0/0 in area 1, and f0/1 in area 2

A. Only the router A loopback interface is parti cipating in the OSPF routing process
B. None of the router A interfaces are participating in the OSPF routing process
C. Router A is using the loopback interface IP address as its OSPF router ID
D. Router A does not have any reachable OSPF neighbors

A. The OSPF areas are not configured correctly.
B. The wildcard masks for the 10.x .x.x networks are incorrect.
C. The 172.16.x.x networks need to be connected to area 0 using virtual links.
D. The 172.16.x.x networks are discontiguous. OSPF is automatically summarizing them to 172.16.0.0/16 and data is being "black holed."
E. There  is not enough information to make a determination.

A. An access list on router B is causing the 192.168.3.16/28 network to be denied
B. An access list on router B is causing the 192.168.3.32/28 network to be denied
C. The distribute list on router B is referencing a numbered access list that does not exist on router B
D. The d istribute list on router B is referencing the wrong interface

A. The network is stable
B. There is a flapping link or interface, and router C knows an alternate path to the network
C. There is a flapping link or interf ace, and router C does not know an alternate path to the network
D. EIGRP is not working correctly on router C
E. There is not enough information to make a determination

A. The network has been stable for at least the last 45 minutes
B. There is a flapping link or interf ace, and router C knows an alternate path to the network
C. There is a flapping link or interface, and router A does not know an alternate path to the network
D. EIGRP is not working correctly on router C
E. There is not enough information to make a determination

A.No dynamic interior routing protocol can summarize as shown
B.Unless configured otherwise, EIGRP would automatically summa rize the prefixes as shown in the exhibit
C.With this IP addressing scheme, EIGRP can be manually configured to summarize prefixes at the specified summarization points
D.The IP address design lends itself to OSPF Each summarizing router would be  an ABR, summarizing to the next area in the address hierarchy