A network technician needs to configure a link between two switches to allow traffic from multiple VLANs over a single physical connection. Which Ethernet standard provides frame tagging to identify VLANs on this link?
802.3
802.1Q
802.1D
802.11
The 802.1Q standard provides VLAN tagging by inserting a tag into the Ethernet frame header, allowing multiple VLANs to be transported over a single link between switches. This tagging enables the receiving switch to identify which VLAN each frame belongs to. 802.3 defines Ethernet standards without VLAN tagging. 802.11 relates to wireless networking, and 802.1D defines the Spanning Tree Protocol for loop prevention.
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