单项选择题
On a 3-port CT3 card, how many HDLC controllers does each port support?（）
A.A B.B C.C D.D
You would like to configure an Ethernet interface with ...
You would like to configure an Ethernet interface with the following characteristics: Which set of configuration commands accurately completes this task?（）
You would like to configure an Ethernet interface with the following characteristics: Fast Which set of configuration commands accurately completes this task?（）
Which CLI command displays FECN and BECN information on...
Which CLI command displays FECN and BECN information on a Frame Relay interface configured on serial interface 4/0:3/1 ?（）
