A technician is troubleshooting a wired device on the network. The technician notices that the link light on the NIC does not illuminate. After testing the device on a
different RJ-45 port, the device connects successfully. Which of the following is causing this issue?

A.
EMI

B.
RFI

C.
Cross-talk

D.
Bad wiring

Explanation:
The question states that the device worked on a different port. This indicates that the wiring is faulty.