CompTIA Network+ Exam Set A – Q9

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

Correct Answer: D