Which of the following should a technician try first to troubleshoot this issue?

A customer is adding fiber connectivity between adjacent buildings. A technician terminates the multimode cable to the fiber patch panel. After the technician connects the fiber patch cable, the indicator light does not turn on.

Which of the following should a technician try first to troubleshoot this issue?
A . Reverse the fibers.
B . Reterminate the fibers.
C . Verify the fiber size.
D . Examine the cable runs for visual faults.

View Answer

Answer: A

Explanation:

When working with fiber optic cables, one common issue is that the transmit (TX) and receive (RX) fibers might be reversed. The first step in troubleshooting should be to reverse the fibers at one end to ensure they are correctly aligned (TX to RX and RX to TX). This is a simple and quick step to rule out a common issue before moving on to more complex troubleshooting.

Reference: CompTIA Network+ study materials.