What is the significance of the LED indicators on a switch?

• A. They indicate power status, hardware faults, and software faults.
• B. They display current IP routes.
• C. They show VLAN membership.
• D. They indicate port speed.

Answer: (A)

LED indicators on a switch provide at-a-glance health and status information, enabling quick troubleshooting and monitoring. The power status light confirms the device is receiving power, so you don’t waste time checking software issues on a unit that isn’t even powered. A dedicated hardware fault indicator signals problems with physical components like fans, power supplies, or internal circuitry, helping you spot failing hardware quickly. A software fault indicator alerts to firmware or software issues, such as boot errors or stuck processes, guiding you to check firmware or configuration problems. While some LEDs do show port-level details like link status or speed, the overall significance of the LED panel is to communicate the device’s general health and operability, which is why indicating power, hardware faults, and software faults is the best description.