CompTIA Security+ (SY0-701) — Question 339

A security engineer configured a remote access VPN. The remote access VPN allows end users to connect to the network by using an agent that is installed on the endpoint, which establishes an encrypted tunnel. Which of the following protocols did the engineer most likely implement?

Answer options

• A. GRE
• B. IPSec
• C. SD-WAN
• D. EAP

Correct answer: B

Explanation

The correct answer is B, IPSec, which is commonly used to secure VPN connections by providing encryption and authentication. GRE (A) is a tunneling protocol but does not provide encryption on its own. SD-WAN (C) is a technology for managing WAN connections and is not specifically a VPN protocol. EAP (D) is an authentication framework and not a VPN protocol.