A.The edge port is shut down.

B.The edge port obtains required information from BPDUs.

C.The edge port discards BPDUs.

D.The edge port forwards BPDUs.

A.Pipe mode

B.Transport mode

C.Packet mode

D.Frame mode

E.Channel mode

A.All the non-edge ports in forwarding state send TCNs to notify other switches of the topology change.

B.SWB deletes the MAC address entries with the E1 port as the destination interface.

C.All the interfaces in forwarding state send topology change notifications (TCNs) to notify other switches of the topology change.

D.The spanning tree is recalculated and the E2 port is elected as the new root port.

A.False

B.True

A.Any area can be configured as a Stub area.

B.The ABR in the Stub area generates a default route to guide forwarding of packets destined for other areas.

C.A Transit area cannot be configured as a Stub area.

D.An AS-external-LSA cannot be advertised to a Stub area.