The Company network administrator has entered the "auto qos voip cisco-phone" command on switch R1.
What does this command do?()
A.It disables the trust boundary feature because the switch knows a Cisco IP phone is attached.
B.The switch assigns a CoS value of 5 to incoming packets.
C.If a Cisco IP phone is attached and removed, the switch continues to trust the CoS values as long as the switch is not rebooted.
D.It turns on STP to see if a Cisco IP phone is attached.
E.If a Cisco IP phone is attached, the switch trusts the CoS.
F.None of the other alternatives apply.