When an 802.1Q tag is added to an Ethernet frame, where is it placed?
A) It is inserted between the preamble and the destination address.
B) It is inserted between the destination and the source addresses.
C) It is inserted between the source address and the Ethernet type field.
D) It is appended to the end of the frame.

Question

Quizplus · Accepted Answer

The 802.1Q tag is inserted between the source address and the Ethernet type field in the Ethernet frame. Specifically, it is inserted after the source MAC address and before the EtherType/length field. This allows the tag to be read by network devices as the frame traverses the network.