Motion sensors are which type of control?
A: Administrative and detective.
B: Detective and deterrence.
C: Deterrence and preventative.
D: Preventative and detective.
CBK 3: Security Engineering
Source: ThorTeaches.com practice tests
B: Motion Detectors (Detective, Deterrence): Used to alert staff by triggering an alarm (silent or not). Someone is here, did an authorized person pass the checkpoint? IF yes, then log the event and do nothing else – IF no, then alert/alarm. Basic ones are light-based – They require light, making them not very reliable.
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