N10-009 · Question #544
Two network switches at different locations are connected via fiber-optic cable at a distance of 10 miles (16 km). The duplex fiber-optic patch cord between the patch panel and switch is…
The correct answer is C. Transpose the two fiber connectors at one end of the new patch cord. Fiber connections require Tx on one end to connect to Rx on the other end. If the patch cord is replaced and link lights remain off, the most common cause is that the connectors are reversed. Swapping (transposing) the connectors ensures proper transmit/receive alignment.
Question
Two network switches at different locations are connected via fiber-optic cable at a distance of 10 miles (16 km). The duplex fiber-optic patch cord between the patch panel and switch is accidentally pinched, stopping connectivity between the two switches. A network technician replaces the broken cable with a new, single-mode patch cord. However, connectivity between both switches is still down and the link lights are still off. Which of the following actions should the technician perform first?
Options
- AReplace the fiber-optic transceiver in the switch
- BLog in to the switch to shut down and re-enable the switchport
- CTranspose the two fiber connectors at one end of the new patch cord
- DSwap the single-mode fiber patch cord with a multimode fiber patch cord
How the community answered
(29 responses)- A3% (1)
- B10% (3)
- C83% (24)
- D3% (1)
Explanation
Fiber connections require Tx on one end to connect to Rx on the other end. If the patch cord is replaced and link lights remain off, the most common cause is that the connectors are reversed. Swapping (transposing) the connectors ensures proper transmit/receive alignment.
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