Multiple choice Which value is inserted before the Ethertype byte offset for VLAN tagging? 0x0800 0x0806 0x86DD 0x8100 Reveal answer Fill a bubble to check yourself D Correct answer Explanation The 802.1q tag is identified by the TPID (Tag Protocol Identifier) value 0x8100, which is inserted into the Ethernet frame to indicate the presence of VLAN information.