A user is complaining of extremely long logon times. Using the following exhibit, what can you conclude?

A. The connection to the computer needs to be upgraded to 100 Mb/s.
B. The connection to the computer has wiring issues.
C. The NIC card in the attached computer is going bad and needs replacement.
D. The interface or computer is running at half-duplex.

D. The collisions vs. packets shows a high number of collisions. In a full-duplex network connection, there should be no collisions. This would suggest that the port on the switch or the NIC card in the computer is set to half-duplex. Half-duplex causes collisions, which can degrade bandwidth by 40% to 60%.