A network technician investigates an issue where a newly installed link between two switches is not coming up. After verifying that both switches are powered on and the ports are enabled, the technician suspects a transceiver mismatch. Each switch supports multi-mode fiber connections. Which of the following could be the reason the link is not working?
One switch uses a 1000Base-LX transceiver and the other uses a 1000Base-SX transceiver
Both switches are using 1000Base-SX transceivers
The switches are configured for different VLANs
One of the switches is using a slightly higher firmware version