medium
Single Answer
0How does IEEE 802.1Q tag frames?
Answer Options
A
802.1Q adds a 32-bit header to the frame with the VLAN tagging information.
B
802.1Q adds a 32-bit header to the packet with the VLAN tagging information.
C
802.1Q inserts a 32-bit field between the source MAC address and the type field.
D
802.1Q inserts a 32-bit field between the destination MAC address and the type field.
Correct Answer: C
Explanation
802.1Q inserts a field containing the 16-bit Tag Protocol ID of 0x8100, a 3-bit CoS field, a 1-bit drop-eligible indicator (used with CoS), and the 12-bit VLAN ID, which equals 32 bits, or 4 bytes. All of the other options are incorrect.
switching
trunking
802.1q
vlan-tagging
frame-format