Which of the following is a correct summary of Navy switch indicators?

• A. Power on/off; hardware indicator for hardware problems; software indicator for software problems.
• B. Power, temperature, and humidity indicators
• C. Port counts and switch age
• D. Traffic load and queue length indicators

Answer: (A)

Switch indicators are designed to give a quick read on the device’s overall health through three simple signals: power status, hardware health, and software health. The power indicator shows whether the switch is receiving power and turned on. The hardware health indicator flags any physical problems with the device, such as a failed fan or power supply, signaling a hardware fault. The software health indicator reflects issues in the system software, like boot problems or software errors that affect operation.

Environmental readings like temperature or humidity aren’t part of the standard switch indicators you rely on for quick status checks in most deployments. Port counts or switch age describe what the device is or has been, not its current operational state. Traffic load and queue length relate to performance, not a simple, at-a-glance health status.

So, the combination of power status, a hardware health indicator, and a software health indicator best captures what Navy switch indicators summarize.