A server is configured to communicate on both VLAN 1 and VLAN 12. VLAN 1 communication
works fine, but VLAN 12 does not. Which of the following MUST happen before the server can
communicate on VLAN 12?

A.
The server’s network switch port must be enabled for 802.11x on VLAN 12.
B.
The server’s network switch port must use VLAN Q-in-Q for VLAN 12.
C.
The server’s network switch port must be 802.1q untagged for VLAN 12.
D.
The server’s network switch port must be 802.1q tagged for VLAN 12.