In the following exhibit, you have configured a port for a phone on an existing port for a computer. However, after you are done, only the phone works. What might be the problem?

A. The phone is misconfigured.
B. The computer is misconfigured.
C. The switchport nonegotiate command is stopping the computer from negotiating connection.
D. The switchport mode needs to be configured as an access port.

D. The port is set up as a trunk. Since the phone is normally configured for 801.Q tagging of COS values, it will work in this diagram. However, since the computer is not tagging traffic for data, the communications will be directed to the native VLAN on the configured trunk.