A.The Local Preference is 0.

B.The AS Path contains a 0.

C.It is suppressed by a damping policy.

D.The next hop is unreachable.

E.It is rejected by a firewall term.

A.The routes are still trying to establish a TCP connection.

B.The TCP connection is successful, and BGP is waiting for the OPEN message from its peer.

C.A keepalive message has been received.

D.The BGP session is fully established and routes are being passed.

A.This is an EBGP peering session.

B.The local device has AS 101 configured but the peer is expecting AS 100.

C.This is an IBGP peering session.

D.The local device has AS 100 configured but the peer is expecting AS 101.

A.For Level 2 adjacencies, the area IDs can be different.

B.Level 2 routers can form an adjacency with Level 1 routers.

C.For Level 1 adjacencies, the area IDs can be different.

D.Level 2 routers do not form adjacencies with Level 1 routers.

A.R3 has the complete OSPF database.

B.R3 and R4 have an adjacency state of Full.

C.R1 and R2 are elected as DROthers.

D.R4 is elected as the DR.