NO.20 Supposed you are the Chief Network Engineer of a certain Telco. Your company is planning
for a big business expansion and it requires that your network authenticate users connecting using
analog modems, Digital Subscriber Lines (DSL), wireless data services, and Virtual Private Networks
(VPN) over a Frame Relay network. Which AAA protocol would you implement?
A. TACACS+
B. DIAMETER
C. Kerberos
D. RADIUS
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Answer: D