CompTIA Security+ (SY0-501) — Question 1001

A Security Officer on a military base needs to encrypt several smart phones that will be going into the field.
Which of the following encryption solutions should be deployed in this situation?

Answer options

• A. Elliptic curve
• B. One-time pad
• C. 3DES
• D. AES-256

Correct answer: D

Explanation

AES-256 is widely recognized for its strong security and efficiency, making it ideal for protecting sensitive information on smartphones. While Elliptic curve encryption is secure, it is typically used for key exchange rather than encrypting data directly. The One-time pad is impractical for regular use due to its complexity, and 3DES is considered outdated and less secure compared to AES-256.