单选题
发布日期:2021-03-17
when a packet is received from an 802.1Q trunk,the vlan id can be determined from the source MAC address table.
unkown unicast frames are retransmitted only to the ports that belong to the same vlan
ports between switches should be configured in access mode so that vlans can span across the ports
broadcast and multicast frames are retransmitted to ports that are configured on different vlan.
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