Which of the following are byproducts of a structured maintenance plan？（Choose all that apply.）（）

A.With IGMPvl， queries are sent to a specific group
B.Hosts issuing IGMPvl requests will be correctly interpreted by IGMPv2 hosts due to backwardcompatibility
C.An IGMPv2 router will ignore IGMPv2 leave messages when IGMFVl hosts are present
D.With IGMFV2， a leave message is supported
E.An IGMPv2 host will send an IGMFVl report on an IGMFVl router
F.An IGMPv2 router can only allow IGMPv2 hosts to execute a join request

A.Layer 1 status
B.Output queue drops
C.Interface CPU utilization
D.Cable type connected to interface
E.Layer 2 status
F.Input queue drops

A.show crypto map ipsec sa
B.show crypto map
C.show crypto engine connections active
D.show ipsec crypto map
E.show crypto map sa
F.show ipsec crypto map sa