【单选题】While logged into a router you manually shut down the serial 0 interface using the "shutdown" interface configuration command. You then issue the "show interface serial 0" command in exec mode. What c...
A.
Serial 0 is up, line protocol is up
B.
Serial 0 is up, line protocol is down
C.
Serial 0 is down, line protocol is down
D.
Serial 0 is down, line protocol is up
E.
Serial 0 is administratively down, line protocol is down
F.
Serial 0 is administratively down, line protocol is up