Which of the following is a true statement pertaining to TACACS, XTACACS, and TACACS+?

A.
TACACS separates authentication and authorization

B.
TACACS+ allows for two-factor authentication and dynamic passwords

C.
XTACACS combines authentication, authorization, and auditing

D.
TACACS+ combines authentication, authorization, and auditing

Explanation:
TACACS combines its authentication and authorization processes, XTACACS separates authentication, authorization, and accounting processes, and TACACS+ is XTACACS with extended two-factor user authentication. TACACS uses fixed passwords forauthentication and TACACS+ allows users to use dynamic (one-time) passwords, which provides more protection.