A host has had a NIC card installed. The NIC can run in either half or full-duplex mode. The host is
connected to a hub that is located in a wiring closet. The network administrator notes that the NIC
is only communicating in half-duplex mode. Which action could be taken to enable full-duplex
operation?

A.
Replace the host NIC.

B.
Replace the hub with a Fast Ethernet switch.

C.
Replace the cable between the PC and hub port.

D.
Install a second NIC card in the host and connect it to another port on the hub.

Explanation: