Which data category typically includes system health metrics such as temperatures and voltages?

• A. Sensor measurements of physical phenomena.
• B. User interface logs.
• C. Telemetry metadata about system health such as temperatures, voltages, and status flags.
• D. Mission objectives.

Answer: (C)

System health indicators like temperatures and voltages describe the state of the hardware itself, so they belong to telemetry metadata about system health. This category provides context about how the device is functioning: are temperatures rising toward unsafe levels, are voltages within acceptable ranges, and what are the current status flags that signal faults or normal operation. These metrics are used for monitoring, diagnostics, and alerting, often accompanied by timestamps and units to make sense of the health picture.

While sensor measurements of physical phenomena capture readings from the environment or the object under test (for example, ambient temperature or external pressure), temperatures and voltages inside a system are about the device’s own condition. User interface logs track interactions rather than health, and mission objectives are goals rather than telemetry measurements.