A、802.1q给以太网帧插入了4字节的标签
B、由于以太网帧的长度增加，所以FCS的值需要重新计算
C、标签的内容包括2字节的VLANID字段
D、对于不支持802.1q的设备，可以忽略这4个字节的内空
更多“关于802.1q，下面说法中正确的是？（）”相关的问题
A、在源MAC地址字段和协议类型字段之间加入4字节的802.1Q的TAG B、在目的MAC地址字段和协议类型字段之间加入4字节的802.1Q的TAG C、封装802.1Q帧的目的MAC地址使用的是0X01-00-0C-00-00 D、封装802.1Q帧不改变原有帧的目的MAC地址
A、A.802.1Q本地VLAN帧未标记的默认 B、B.802.1Q中继端口，也可以是安全的端口 C、C.802.1Q中继可以使用10Mb/s以太网接口 D、D.802.1Q中继需要全双工，点对点连接 E、E.802.1Q中继应该两头的本地VLAN是相同的
A、A.802.1q是Cisco专有协议。 B、B.802.1q帧通过MAC地址映射到VLAN C、C.802.1q不需要重新计算原始帧的FCS D、D.802.1q对通过接入端口转发出去的帧不会执行操作
A、IEEE802.1Q是一种中继标准，支持标签帧和无标签帧 B、接入链路和中继链路必须支持IEEE802.1Q协议 C、标签帧可在支持IEEE802.1Q的交换机之间传送 D、如果不支持IEEE802.1Q的PC收到标签帧，该帧会被丢弃
A、目前支持802.1q的交换机，都支持QinQ B、支持QinQ的交换机，支持4K×4K个vlan C、灵活QinQ支持的vlan数量要多于基本的QinQ支持的vlan数量 D、QinQ就是VPLS另外一种说法
A、802.1Q native VLAN frames are untagged by default. B、802.1Q trunking ports can also be secure ports. C、802.1Q trunks can use 10 Mb/s Ethernet interfaces. D、802.1Q trunks require full-duplex, point-to-point connectivity. E、802.1Q trunks should have native VLANs that are the same at both ends.
A、802.1Q native VLAN frames are untagged by default. B、802.1Q trunking ports can also be secure ports. C、802.1Q trunks can use 10 Mb/s Ethernet interfaces. D、802.1Q trunks require full-duplex, point-to-point connectivity. E、802.1Q trunks should have native VLANs that are the same at both ends.
A、802.1Q native VLAN frames are untagged by default. B、802.1Q trunking ports can also be secure ports. C、802.1Q trunks can use 10 Mb/s Ethernet interfaces. D、802.1Q trunks require full-duplex, point-to-point connectivity. E、802.1Q trunks should have native VLANs that are the same at both ends.
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