Networking ConceptsQuestion 18 of 100
Which IEEE standard defines VLAN tagging on Ethernet trunk links?
a.802.1Q
b.802.3af
c.802.11ac
d.802.1X
Explanation
IEEE 802.1Q defines the frame tagging method used to carry multiple VLANs across a trunk link. 802.3af covers PoE, 802.11ac is Wi-Fi, and 802.1X is port-based access control. The 802.1Q tag adds a 4-byte field to the Ethernet frame.
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