Exam N10-009 Topic 1 Question 143 Discussion

Actual exam question for CompTIA's N10-009 exam
Question #: 143
Topic #: 1
A network administrator needs to connect a multimode fiber cable from the MDF to the server room. The administrator connects the cable to Switch 2, but there is no link light. The administrator tests the fiber and finds it does not have any issues. Swapping the connection to Switch 1 in a working port is successful, but the swapped connection does not work on Switch 2. Which of the following should the administrator verify next?

Suggested Answer: B Vote an answer

The most probable issue is with thetransceiver model. Not all transceivers are compatible with multimode fiber, and the specific type (e.g., SFP, SFP+) and its wavelength must match the fiber cable type. If a port works on one switch but not the other with the same cable, this is a strong indicator of incompatible or faulty transceiver hardware.
Reference:Section 1.5 - Transmission Media and Transceivers - "Transceivers and Compatibility"

by Harold at Feb 26, 2026, 02:53 PM

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