HPE Aruba Certified WAN Associate (ACWA) — Question 44

What is RADIUS Change of Authorization (CoA)?

Answer options

• A. It is a mechanism that enables ClearPass to assigned a User-Based Tunnel (UBT) between a switch and controller for Dynamic Segmentation.
• B. It allows clients to issue a privilege escalation request to ClearPass using RADIUS to switch to TACACS+.
• C. It allows ClearPass to transmit messages to the Network Attached Device/Network Attached Server (NAD/NAS) to modify a user's session status.
• D. It forces the client to re-authenticate upon roaming to an access point controlled by a foreign mobility controller.

Correct answer: C

Explanation

The correct answer is C because RADIUS CoA allows ClearPass to communicate with network devices to change the status of a user’s session dynamically. Option A describes a different feature related to dynamic segmentation, while B discusses privilege escalation that does not pertain to session modification, and D focuses on re-authentication, which is not the function of CoA.