Which AAA protocol is the most likely able to handle this requirement?

An Internet Service Provider (ISP) has a need to authenticate users connecting via analog modems, Digital Subscriber Lines (DSL), wireless data services, and Virtual Private Networks (VPN) over a Frame Relay network.

Which AAA protocol is the most likely able to handle this requirement?
A . TACACS+
B . DIAMETER
C . Kerberos
D . RADIUS

View Answer

Answer: D