Certified Information Systems Auditor (CISA) — Question 1212

Which of the following physical access controls would MOST effectively prevent unauthorized access to a data center?

Answer options

• A. Badge access
• B. Smart card and physical key
• C. Palm reader and PIN
• D. Cipher locks

Correct answer: C

Explanation

The palm reader and PIN combination provides a two-factor authentication method, making it significantly harder for unauthorized individuals to gain access compared to other options. While badge access and smart cards offer some security, they can be lost or stolen, and cipher locks can be bypassed if the code is known. Therefore, option C is the most secure choice.