CompTIA Security+ (SY0-701) · Free practice question 1 of 12
Access control vestibule stops tailgating
Staff at Hawthorne Research report that visitors sometimes slip into the lab behind employees who have badged in. Which physical control best prevents this by letting only one person through at a time?
- A.A fence with warning signs
- B.An access control vestibule
- C.Motion-activated lighting
- D.Bollards
Show answer and explanation
Correct answer: B. An access control vestibule
Why: An access control vestibule, sometimes called a mantrap, uses two interlocking doors so only one person passes after authenticating, which stops tailgating and piggybacking. Bollards stop vehicles rather than people on foot. Lighting and fencing with signs deter intruders but do not stop someone from following an authorized employee through a door.
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