In the context of 802.1Q tunneling, VLANs can be configured on which type of interface?

In 802.1Q tunneling, VLANs can be configured on both access and trunk interfaces, making the first choice the correct one.

Access interfaces are typically used to connect end devices (like computers or printers) to the network in a single VLAN. When an access interface is configured, it allows the connected device to belong to a specific VLAN and ensures that traffic from that device is tagged appropriately when it travels across the network.

Trunk interfaces, on the other hand, serve different VLANs by allowing multiple VLANs to be transported over a single physical link between network devices, such as switches or routers. Trunking is essential for maintaining VLAN information throughout the network and using the 802.1Q standard, VLAN tags are added to frames so that the receiving device can identify the originating VLAN.

Thus, because VLANs can be configured on both access and trunk interfaces to manage network segmentation effectively, the first choice accurately reflects the capabilities of 802.1Q tunneling.