Which command is a valid way to view the status of an interface？（）

A.The Routing Engine handles all exception traffic.
B.The Routing Engine synchronizes the route table with the PFE
C.The Routing Engine is hot-pluggable.
D.The Routing Engine controls the PFE

A.one primary and one secondary IP address
B.one IP address
C.as many IP addresses as you want
D.one primary and multiple secondary IP addresses

A.It is only used for exception traffic.
B.It is an FE link called fxp2.
C.It is rate-limited to avoid DDOS attacks.
D.It is only used to send the forwarding-table from the Routing Engine to the Packet-Forwarding Engine.