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CompTIA Security+ SY0-701 Practice Question

Which type of sensor is typically utilized to detect motion through emitted microwave signals that reflect off moving objects?

Pressure sensor
Ultrasonic sensor
Infrared sensor
Microwave sensor

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Answer Description

A microwave sensor is used to detect motion by emitting microwave pulses and then measuring the reflection of moving objects, making it an effective motion detector. Infrared sensors detect heat signatures, ultrasonic sensors utilize sound waves, and pressure sensors respond to physical force or weight.

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CompTIA Security+ SY0-701

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