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N10-009 · Question #409

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…

The correct answer is B. Transceiver model. Since the cable and connectors work on another switch but won’t link on Switch 2, the likely issue is an incompatible SFP module; you should verify that the transceiver in Switch 2 is the correct multimode model.

Submitted by tunde_lagos· Mar 6, 2026Network Troubleshooting

Question

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?

Options

  • AFiber length
  • BTransceiver model
  • CConnector type
  • DPort speed

How the community answered

(31 responses)
  • A
    3% (1)
  • B
    71% (22)
  • C
    16% (5)
  • D
    10% (3)

Explanation

Since the cable and connectors work on another switch but won’t link on Switch 2, the likely issue is an incompatible SFP module; you should verify that the transceiver in Switch 2 is the correct multimode model.

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