Regarding the description of IGMP Snooping-working mechanism, which is the correct?

Question

Options

• AThe layer 2 switch establishes and maintains the PIM routing table on the layer 2 by continuously monitoring IGMP messages.
• BAfter IGMP Snooping, the multicast data flow no longer needs to be copied to each VLAN member.
• CAfter routing IGMP Snooping, the message will no longer be broadcast on the second layer, but will be multicast on the second layer.
• DIf the host sends an IGMP report message, the switch will delete the multicast entry corresponding to the host.

• A
  2% (1)
• B
  85% (35)
• C
  5% (2)
• D
  7% (3)

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