Which four statements about REP configurations on a Cisco ME 3400 switch port are true? (Choose four.)
A . The port must be an NNI type and must be in trunk mode.
B . Use the rep segment number command to enable REP on the switch port.
C . A REP segment cannot be wrapped into a ring topology. REP supports only a topology where each REP segment has two exit points via two edge switches.
D . The port where the segment terminates is called the edge port.
E . With REP, at least one port is always blocked in any given segment-that is, the alternate port.
F . If a failure occurs within the segment, the blocked port goes to the forwarding state after it goes through the listening state and the learning state.
Answer: A,B,D,E