Which of the following is a preventive control?

A.
Motion detectors

B.
Guard dogs

C.
Audit logs

D.
Intrusion detection systems

Explanation:
This is very obvious. Since we want to prevent something from happening, we can
go out and buy some Guard dogs to make the job. You are buying them because you want to
prevent something from happening. The intruder will see the dogs and will maybe go back, this
prevents an attack, this dogs are a form of preventive control. Motion Detectors and IDS are realtime, Audit Logs are passive.