A company wants to deploy IP telephony on its network. The engineer has to allow the
existing switches to support Cisco IP phones that are connected to a Cisco Unified
Communications Manager server. Which command should be configured on the switches to
allow voice traffic on VLAN 50?

A.
switchport access vlan 50

B.
switchport mode access

C.
switchport mode trunk

D.
switchport voice vlan 50