Implementing Cisco IP Switched Networks (SWITCH v2-0) (#10)

How is the AAA accounting feature used with RADIUS?

It tracks an individual’s usage of network resources.
It serves as a database that contains the usernames of all users allowed to access the network.
it is coupled with the authorization feature to identify the features on a network device to which the user has access.
It is coupled with the authentication feature to determine whether the user can access a device on a network.