CompTIA A+ Core 2 (220-1202)SecurityEasy
A data center wants to prevent an unauthorized person from following an authorized employee through a secured entrance. Which physical security control is specifically designed to allow only one person through at a time?
- ABiometric scanner
- BCable lock
- CMantrap
- DBollard
Show answer & explanationAnswer & explanation
Correct answer: C. Mantrap
A mantrap is a small enclosed space with two interlocking doors; the second door will not open until the first is closed, ensuring only one person passes through at a time and preventing tailgating.
Why the other options are wrong
- A. A biometric scanner verifies identity but does not physically prevent tailgating on its own.
- B. A cable lock secures equipment like laptops, not doorways.
- D. Bollards prevent vehicle access, not tailgating by people.
Mantrap
A physical access control consisting of two interlocking doors that only allow one authenticated person to pass through at a time, preventing tailgating.
- Prevents tailgating/piggybacking
- Only one door opens at a time
- Often paired with badge or biometric access
Memory trick: 'Man'trap traps one 'man' at a time between two doors.