A new Company switch was just configured using the "switchport trunk native vlan 7" command. What does this interface command accomplish?

A.
Causes the interface to apply ISL framing for traffic on VLAN 7

B.
Configures the trunking interface to forward traffic from VLAN 7

C.
Configures the interface to be a trunking port and causes traffic on VLAN 7 to be 802.1q tagged

D.
Configures the trunking interface to send traffic from VLAN 7 untagged

Explanation:

In 802.1Q trunking, all VLAN packets are tagged on the trunk link to indicate the VLAN to which they belong. Frames belonging to the Native VLAN are sent untagged on the trunk link. The Native VLAN contains ports not assigned to other VLANs that by default belong to VLAN 1. VLAN 1 is the Native VLAN by default, but VLANs other than VLAN 1 may be designated as the Native VLAN. However, the Native VLAN must be the same on trunked switches in 802.1Q trunking. If a VLAN other than VLAN 1 is to be the Native VLAN, it needs to be identified on the trunk ports. In the interface configuration mode of the trunk port(s), the IOS-based command to designate the Native VLAN is switchport trunk native.
Switch(config-if)#switchport trunk native vlan vlan-id