An engineer is configuring data and voice services to pass through the same port. The designated switch interface fastethernet0/1 must transmit packets using the same priority for data when they are received from the access port of the IP phone.
Which configuration must be used?
A.interface fastethernet0/1 switchport priority extend cos 7 B.interface fastethernet0/1 switchport voice vlan untagged C.interface fastethernet0/1 switchport voice vlan dot1p D.interface fastethernet0/1 switchport priority extend trust正确答案A
