What is a characteristic of multi-VLAN access ports?

A.
The port has to support STP PortFast.

B.
The auxiliary VLAN is for data service and is identified by the PVID.

C.
The port hardware is set as an 802.1Q trunk.

D.
Both the voice service and data service use the same trust boundary.

Explanation:
Multiservice switches supports a new parameter for IP Telephony support that makes the access port a multi-VLAN access port. The new parameter is called an auxiliary VLAN. Every Ethernet 10/100/1000 port in the switch is associated with two VLANs

– A Native VLAN for data service that is identified by the port VLAN identifier or PVID
– An Auxiliary VLAN for voice service that is identified by the voice VLAN identified or VVID.
– During the initial CDP exchange with the access switch, the IP phone is configured with a VVID.
– The IP phone also supplied with a QoS configuration using Cisco Discovery Protocol.
– Voice traffic is separated from data, and supports a different trust boundary.

The multi-VLAN access ports are not trunk ports, even though the hardware is set to dot1q trunk. The hardware setting is used to carry more than two VLANs, but the port is still considered an access port that is able to carry one native VLAN and the Auxiliary VLAN. The switchport host command can be applied to a multi-VLAN access port on the access switch.