What is one of the roles of the network access server (NAS) in the AAA framework?

Question

Options

• AIt negotiates with each user's device to determine which EAP method is used for authentication.
• BIt determines which resources authenticated users are allowed to access and monitors each user's
• CIt enforces access to network services and sends accounting information to the AAA server.
• DIt authenticates legitimate users and uses policies to determine which resources each user is

• B
  4% (1)
• C
  92% (22)
• D
  4% (1)

Explanation

The AAA (Authentication, Authorization, and Accounting) framework is used in network security to manage user access. In this framework, the Network Access Server (NAS) plays a specific role. In an HPE Aruba Networking environment, the NAS is typically a device like a Mobility Controller (MC) or an AOS-CX switch that interacts with an AAA server (e.g., ClearPass Policy Manager, CPPM) to authenticate users. NAS Role in AAA: Authentication: The NAS acts as a client to the AAA server (e.g., via RADIUS), forwarding authentication requests from the user's device to the server. It does not perform the authentication itself; the AAA server authenticates the user. Authorization: After authentication, the NAS receives authorization attributes from the AAA server (e.g., a user role via Aruba-User-Role VSA) and enforces access policies (e.g., firewall rules, VLAN assignment) based on those attributes. Accounting: The NAS sends accounting information (e.g., session start/stop, data usage) to the AAA server to track user activity.

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