问答题
what is multicast snooping？
IGMP snooping is a technology ......
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问答题 whatismulticastscoping？
问答题 WhatisanRPFcheck？
多项选择题 Refer to the exhibit. From the MAC addresses shown in the command output， to which two ports is the multicast stream 225.230.57.199 being forwarded on this switch？ （）
