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思科认证考试

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Which tech nology manages multicast traffic at Layer 2 by configuring Layer 2 LAN interfaces dynamically to forward multicast traffic only to those interfaces that want to receive it?()

  • A、IGMP
  • B、IGMP snooping
  • C、PIM - DM
  • D、DVMRP
  • E、MOS PF
正确答案:B
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