What distinguishes TACACS+ from RADIUS?
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Correct answer: TACACS+ separates authentication and authorization, and RADIUS merges them..
Why this is the answer
TACACS+ (Terminal Access Controller Access-Control System Plus) separates the authentication, authorization, and accounting (AAA) functions, allowing for more granular control. This means a user can be authenticated by one server and authorized by another. RADIUS (Remote Authentication Dial-In User Service), on the other hand, combines authentication and authorization into a single process. This makes RADIUS simpler to implement but less flexible. RADIUS does not log all commands; TACACS+ offers more robust command logging. TACACS+ encrypts the entire payload, while RADIUS encrypts only the password. Both protocols can be used for various authentication types, not just dial-up.
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