RADIUS provides which of the following?

A.
Authentication, Authorization, Availability

B.
Authentication, Authorization, Auditing

C.
Authentication, Accounting, Auditing

D.
Authentication, Authorization, Accounting

Explanation:
The Remote Authentication Dial In User Service (RADIUS) networking protocol offers centralized
Authentication, Authorization, and Accounting (AAA) management for users who make use of a
network service. It is for this reason that A, B, and C: are incorrect.
References:
http://en.wikipedia.org/wiki/RADIUS