You are troubleshooting a 3 foot long fiber patch cable that - CompTIA-N10-009
Question
You are troubleshooting a 3 foot long fiber patch cable that you suspect is causing intermittent connectivity between two switches. Which of the following tools should you use to measure the signal as it transmits over the fiber optic cable?
Answers
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Explanation
Correct Answer: D. Fiber light meter
- Fiber Light Meter:
A fiber light meter is used to measure the strength of the optical signal as it transmits over a fiber optic cable. This tool provides precise information about signal power and identifies whether the fiber is transmitting at the required levels for proper communication. It is the appropriate tool for testing a short fiber patch cable like the 3-foot-long cable mentioned in the scenario.
Why the other options are incorrect:
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Optical Time Domain Reflectometer (OTDR):
- OTDR is used to locate faults, breaks, or bends in long-distance fiber optic cables by sending a signal and analyzing the reflections. While it is useful for troubleshooting long fiber runs, it is overkill for a short 3-foot patch cable and does not directly measure signal strength.
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Loopback Adapter:
- A loopback adapter is used for testing network ports by looping back the signal to the sender. It does not measure optical signal strength or help identify issues with a fiber cable.
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Cable Tester:
- A general cable tester is used to test copper cables (e.g., Cat 5e/6) for continuity, miswiring, or faults. It is not designed to measure optical signals in fiber cables.
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