While troubleshooting a LAN network, you notice a large number of alignment errors, FCS Errors, and late collisions.
This may indicate which of the following?
A . A half-duplex connection between the switch and an end-point on a 10/100/1000Base-T Ethernet link
B . Normal errors under most circumstances
C . There is a duplex mismatch on a 1000Base-LX/LH Ethernet link
D . There is a duplex mismatch on a 10/100/1000Base-T Ethernet link
Answer: D