多选题Which of the following statements concerning IGMP are correct？（Choose all that apply.）（）AWith IGMPvl， queries are sent to a specific groupBHosts issuing IGMPvl requests will be correctly interpreted by IGMPv2 hosts due to backwardcompatibilityCAn IGMPv2 router will ignore IGMPv2 leave messages when IGMFVl hosts are presentDWith IGMFV2， a leave message is supportedEAn IGMPv2 host will send an IGMFVl report on an IGMFVl routerFAn IGMPv2 router can only allow IGMPv2 hosts to execute a join request
多选题
Which of the following statements concerning IGMP are correct？（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
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