An administrator wants to configure network device administration and is trying to decide whether to use TACACS+ or RADIUS. A reliable protocol must be used tha...

An administrator wants to configure network device administration and is trying to decide whether to use TACACS+ or RADIUS. A reliable protocol must be used that can check command authorization
Which protocol meets these requirements and why?

A. RADIUS because it runs over TCP. B. RADIUS because it runs over UDP. C. TACACS+ because it runs over TCP. D. TACACS+ because it runs over UDP.