A.Ping static 0.0.0.0/0

B.Ping static 3.3.3.1

C.Ping 3.3.3.1

D.Ping 0.0.0.0

A.The router has not received a valid OSPF Hello packet from its neighbor.

B.The interface facing the neighbor is down.

C.The interface is included in a different area than the neighbor router.

D.An OSPF database description packet has not been received from the neighbor.

A.Type 2 Network LSA

B.Type 4 ASBR LSA

C.Type 3 Summary LSA

D.Type 1 Router LSA

A.Convergence is triggered when the switches notify the routers about the link state information. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged

B.Convergence is triggered when the adjacency between routers R1 and R2 drops as a result of Hello timeouts. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

C.Convergence will not be triggered because switches cannot run routing protocols between them.

D.Convergence is triggered when the physical interfaces between routers R1 and R2 go down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

E.Convergence is triggered when an LSA is sent from router R1 to router R2 to indicate that the link is down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

A.The Router ID is the same on both routers

B.A OSPF Hello has not been received from the neighbor

C.OSPF is not enabled on one of the routers

D.The MTU does not match on both interfaces