试题详情
- 单项选择题 While using a packet analyzer， you notice four additional bytes being added to the packets in the Company network. Which protocol inserts a four byte tag into the Ethernet frame and recalculates CRC value？ （）
A、 DTP
B、 VTP
C、 802.1Q
D、 ISL
E、 None of the other alternatives apply
- C
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