In a server-based AAA implementation, which protocol will allow the router to successfully communicate with the AAA server?

In a server-based AAA implementation, which protocol will allow the router to successfully communicate with the AAA server?

• RADIUS
• 802.1x
• SSH
• TACACS

Explanation: With a server-based method, the router accesses a central AAA server using either the Remote Authentication Dial-In User (RADIUS) or Terminal Access Controller Access Control System (TACACS+) protocol. SSH is a protocol used for remote login. 802.1x is a protocol used in port-based authentication. TACACS is a legacy protocol and is no longer used.

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