问题:
A . The source must send a PIM Register message to the rendezvous point (RP)
B . The source must first join the multicast group using IGMP before sending
C . The source must perform a Request to Send (RTS) and Clear to Send (CTS) handshake with the PIM designated router (DR)
D . No control plane signaling needs to be performed;the source can simply begin sending on the local subnet
● 参考解析
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