单选题If all OSPF routers on a broadcast network have the same OSPF priority, what parameter is used to determine the new BDR at the time of a DR failure?（）A area IDB router IDC loopback addressD IP address of interface on broadcast network

Router R1 connects to a Frame Relay cloud using a multipoint subinterface, with ten PVCs associated with the subinterface.What command would make this router not use a DR, and dynamically discover OSPF neighbors?（）

A. ip ospf network broadcast

B. ip ospf network non - broadcast

C. ip ospf network point - to - multipoint

D. ip ospf network point - to - multipoint non - broadcast

A. It is used with the OSPF priority values to determine which OSPF router will become the DR or BOR in a point-to-point network

B. It is used with the OSPF priority values to determine which interface will be used to form a neighbor relationship with another OSPF router

C. It is used with the OSPF priority values to determine which router will become the DR or BOR in a multi access network

D. It is used to determine which interfaces will send Hello packets to neighboring OSPF routers

A.A

B.B

C.C

D.D

A. Point-to-point

B. Broadcast

C. Non-broadcast multi-access

D. Backbone area 0

E. None of the above

A. Router R1 will only establish full adjacency with the DR and BDR on broadcast multi- access networks.

B. Router R2 has been elected as a DR for the broadcast multiaccess network in OSPF area 1.

C. Routers R1 and R2 are configured as stub routers for OSPF area 1 and OSPF area 2.

D. Router R1 and R2 are configured for a virtual link between OSPF area 1 and OSPF area 2.

E. The Hello parameters on routers R1 and R2 do not m atch.

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.

Refer to the exhibit. You have completed an OSPF implementation, and you are verifying OSPF operation. You notice that router A and router B are stuck in the two - way state. From the show ip ospf interface command output, what is the cause of this issue?（）

A. All OSPF implementations must have at le ast one interface in area 0.

B. You are attempting to run in the broadcast mode over an NBMA interface.

C. Both routers are configured to function as a BDR; therefore, there is no DR router.

D. Someone has changed the OSPF router ID; therefore you must clear the OSPF process.

E. The OSPF priority is set to 0 on both routers; therefore neither can become the DR.

A. area ID

B. router ID

C. loopback address

D. IP address of interface on broadcast network

A. point-to-point

B. Backbone area 0

C. Broadcast multicast

D. Non-broadcast multi-access

E. The DR/BDR process is done for all interface types

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 t he neighbors. What should be done to fix the problem? （）

A. The ip ospf network broadcast command should be configured on each Frame Relay interface

B. The ip ospf network non -broadcast command should be configured on each Frame Relay interface

C. Th e ip ospf priority value on the spoke routers should be set to 0

D. The ip ospf priority value on the hub router should be set to 0

E. The neighbor command should be configured under the OSPF routing process on all routers