Which concept is commonly associated with enabling authentication, authorization, and accounting for remote-access VPNs?

Which concept is commonly associated with enabling authentication, authorization, and accounting for remote-access VPNs?

• A. Not related to VPNs
• B. Multi-threaded protocols
• C. Access to resources
• D. Used in a remote-access VPN

Answer: (D)

Authentication, Authorization, and Accounting (AAA) is the system that verifies who is connecting, determines what they are allowed to do, and records their activity. In remote-access VPNs, AAA services (such as RADIUS or TACACS+) perform these roles, enabling secure login, enforcing permissions, and logging sessions for auditing and billing. That connection to the VPN context is why the statement about being used in a remote-access VPN is the best fit. The other options don’t address the triad of verification, rights, and tracking that AAA provides in this setting.

Authentication, Authorization, and Accounting (AAA) is the system that verifies who is connecting, determines what they are allowed to do, and records their activity. In remote-access VPNs, AAA services (such as RADIUS or TACACS+) perform these roles, enabling secure login, enforcing permissions, and logging sessions for auditing and billing. That connection to the VPN context is why the statement about being used in a remote-access VPN is the best fit. The other options don’t address the triad of verification, rights, and tracking that AAA provides in this setting.