CompTIA CySA+ (CS0-002) — Question 64

A security analyst needs to determine the best method for securing access to a top-secret datacenter. Along with an access card and PIN code, which of the following additional authentication methods would be BEST to enhance the datacenter’s security?

Answer options

• A. Physical key
• B. Retinal scan
• C. Passphrase
• D. Fingerprint

Correct answer: B

Explanation

The retinal scan is the best option as it provides a unique biometric authentication method that is difficult to forge or replicate. While a physical key, passphrase, and fingerprint offer varying levels of security, they do not provide the same level of assurance against unauthorized access as a retinal scan, which is based on unique eye patterns.