CompTIA Security+ (SY0-501) — Question 195

A security administrator has been asked to implement a VPN that will support remote access over IPSEC.
Which of the following is an encryption algorithm that would meet this requirement?

Answer options

• A. MD5
• B. AES
• C. UDP
• D. PKI

Correct answer: B

Explanation

The correct answer is AES, which is a widely used encryption algorithm that provides strong security for VPNs using IPSEC. MD5 is a hashing algorithm, not an encryption method, while UDP is a transport protocol and PKI refers to a framework for managing digital certificates, neither of which are suitable as encryption algorithms.