CISSP · Question #92
CISSP Question #92: Real Exam Question with Answer & Explanation
The correct answer is C: automatically compensate for variance in background temperature.. Passive Infrared Sensors (PIR) are devices that detect motion by sensing the infrared radiation emitted by objects. In a non-climate controlled environment, the background temperature may vary due to weather, seasons, or other factors. This may affect the sensitivity and accuracy
Question
Passive Infrared Sensors (PIR) used in a non-climate controlled environment should
Options
- Areduce the detected object temperature in relation to the background temperature.
- Bincrease the detected object temperature in relation to the background temperature.
- Cautomatically compensate for variance in background temperature.
- Ddetect objects of a specific temperature independent of the background temperature.
Explanation
Passive Infrared Sensors (PIR) are devices that detect motion by sensing the infrared radiation emitted by objects. In a non-climate controlled environment, the background temperature may vary due to weather, seasons, or other factors. This may affect the sensitivity and accuracy of the PIR sensors, as they may not be able to distinguish between the object and the background. Therefore, the PIR sensors should have a feature that automatically adjusts the threshold or baseline of the background temperature to avoid false alarms or missed detections.
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