Which switch port is assigned to a single VLAN and connects end-user devices, with untagged traffic?

Which switch port is assigned to a single VLAN and connects end-user devices, with untagged traffic?

• A. Edge Port
• B. Access Port
• C. Trunk Port
• D. Uplink Port

Answer: (B)

Focusing on how a switch treats traffic for end-user devices, the port that is assigned to a single VLAN and sends untagged frames is the access port. An access port is configured for one VLAN and accepts traffic that arrives untagged from connected devices such as PCs or printers. The switch internally associates that untagged traffic with the configured VLAN, and when sending frames out, it continues to transmit untagged frames to those devices so they don’t need to understand VLAN tagging. In contrast, a trunk port carries traffic for multiple VLANs over the same link and uses 802.1Q tags to identify which VLAN each frame belongs to, which is not appropriate for a typical end-user device that expects untagged traffic. An uplink port is a general term for a link to another switch or network device and can be a trunk or an access port depending on design, but it isn’t defined by the single-VLAN, untagged behavior. An edge port describes a role related to enabling fast entry for end devices in some contexts, but the standard, unambiguous choice for a port serving end-user devices in a single VLAN with untagged traffic is an access port.

Focusing on how a switch treats traffic for end-user devices, the port that is assigned to a single VLAN and sends untagged frames is the access port. An access port is configured for one VLAN and accepts traffic that arrives untagged from connected devices such as PCs or printers. The switch internally associates that untagged traffic with the configured VLAN, and when sending frames out, it continues to transmit untagged frames to those devices so they don’t need to understand VLAN tagging.

In contrast, a trunk port carries traffic for multiple VLANs over the same link and uses 802.1Q tags to identify which VLAN each frame belongs to, which is not appropriate for a typical end-user device that expects untagged traffic. An uplink port is a general term for a link to another switch or network device and can be a trunk or an access port depending on design, but it isn’t defined by the single-VLAN, untagged behavior. An edge port describes a role related to enabling fast entry for end devices in some contexts, but the standard, unambiguous choice for a port serving end-user devices in a single VLAN with untagged traffic is an access port.