CompTIA Security+ (SY0-501) — Question 284

Which of the following is a technical preventive control?

Answer options

• A. Two-factor authentication
• B. DVR-supported cameras
• C. Acceptable-use MOTD
• D. Syslog server

Correct answer: A

Explanation

Two-factor authentication is a technical preventive control because it adds an additional layer of security beyond just a password. The other options, while important for security, either provide monitoring (like DVR-supported cameras and Syslog server) or set guidelines (like Acceptable-use MOTD) rather than actively preventing unauthorized access.