According to the VLAN frame format defined in IEEE 802.1Q, how many bits does a VLAN ID contain? 03/14/2021 – by Mod_GuideK 0 According to the VLAN frame format defined in IEEE 802.1Q, how many bits does a VLAN ID contain? A. 6 B. 8 C. 10 D. 12 SHOW ANSWERSCorrect Answer: D Explanation/Reference: Download Printable PDF. VALID exam to help you PASS.