Implementing Cisco IP Switched Networks (SWITCH v2-0) (#315)

Which two differences between RADIUS and TACACS+ are true? (Choose two.)

Only TACACS+ uses user privilege levels to determine which commands the user can execute.
Only RADIUS provides granular control over the CLI commands that a user can execute.
Only RADIUS uses UDP.
Only TACACS+ uses UDP.
Only TACACS+ can combine authentication and authorization functions.