Which trunking protocol inserts a four byte tag into the Ethernet frame and recalculates the CRC
value?
A.
VTP
B.
802.1Q
C.
DTP
D.
ISL
Explanation:
802.1Q is the IEEE standard for tagging frames on a trunk and supports up to 4096 VLANs. In
802.1Q, the trunking device inserts a 4-byte tag into the original frame and re-computes the frame
check sequence (FCS) before the device sends the frame over the trunk link.
Reference:
http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094665.shtml