Ann has taken over as the new head of the IT department. One of her first assignments was to
implement AAA in preparation for the company’s new telecommuting policy. When she takes
inventory of the organizations existing network infrastructure, she makes note that it is a mix of
several different vendors. Ann knows she needs a method of secure centralized access to the
company’s network resources. Which of the following is the BEST service for Ann to implement?

A.
RADIUS

B.
LDAP

C.
SAML

D.
TACACS+

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.