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what type of control?

An Intrusion Detection System (IDS) is what type of control?

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A.
A preventive control.

B.
A detective control.

C.
A recovery control.

D.
A directive control.

Explanation:
Detective controls include Motion detectors, Closed-circuit TVs, Monitoring and Supervising, Job rotation,
Investigations, Audit logs, and IDS.
Incorrect Answers:
A: Preventive controls include Locks, Badge system, Security guard, Security policy, Testing, ACLs, Encryption,
and Smart cards.
C: Recovery controls include Offsite facility, and Data backup.
D: Directive controls, which are also known as administrative controls, include Security policy, Monitoring and
Supervising, Separation of duties, Job rotation, Information Classification, Personnel Procedures, Testing, and
Security-awareness training.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, 2013, pp. 32, 33


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