A.stub area is not allowed to inject type7 LSA

B.The virtual link cannot traverse the stub area.

C.The backbone area cannot be configured as a stub area.

D.ASBR cannot exist in the stub area.

A.MPLS supports multi-layer tag nesting, the S-bit value of the innermost tag is 1.

B.The length of the MPLS label is 20 bits and is used for packet forwarding.

C.The label space range of dynamic signaling protocols such as LDP and MP-BGP is 16-1023.

D.In the TTL processing mode of the Pipe mode, IP packets are transmitted on the MPLS network. The TTL value of the IP packets is reduced by 1 in the MPLS ingress node and the egress node respectively.

A.Type-7

B.Type-3

C.Type-5

D.Type-4

A.SYN

B.PSH

C.RST

D.CLR

E.SND

F.ACK

A.The aging timer is set to 15 seconds, so idle entries age out.

B.Only entries behind the port where TC was received are removed.

C.All entries are removed (purged).

D.All entries are removed except for those behind edge ports and the port where TC was received.

E.All entries are removed except for entries behind edge ports.