CompTIA Network+ (N10-008) — Question 409

Which of the following physical security methods is the MOST effective to prevent tailgating?

Answer options

• A. Biometrics in an access control vestibule
• B. IP cameras with motion detection
• C. Smart lockers with tamper protection
• D. Badge readers plus a PIN pad

Correct answer: A

Explanation

Biometrics in an access control vestibule are the most effective at preventing tailgating because they require unique physical traits for access, making it difficult for unauthorized individuals to follow someone inside. IP cameras and motion detection can monitor but do not actively prevent tailgating. Smart lockers and badge readers with a PIN pad provide some level of security, but they do not directly address the issue of unauthorized entry that tailgating presents.