CISA Protection of Information Assets Practice Question
An IS auditor is reviewing the physical access controls at a data center. Which of the following is the MOST effective control to prevent tailgating?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Mantrap with two interlocking doors
A mantrap allows only one person to pass at a time, preventing unauthorized individuals from following an authorized person.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Mantrap with two interlocking doors
Why this is correct
A mantrap physically enforces single passage.
- ✗
Biometric access controls
Why it's wrong here
Biometrics verify identity but do not prevent tailgating.
- ✗
CCTV cameras at entrances
Why it's wrong here
CCTV can record incidents but does not prevent tailgating.
- ✗
Security guards at the entrance
Why it's wrong here
Guards can help but are less reliable than a mantrap.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CISA practice question is part of Courseiva's free ISACA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CISA exam.