Which of the following authentication services should be replaced with a more secure alternative?
A.
RADIUS
B.
TACACS
C.
TACACS+
D.
XTACACS
Explanation:
Terminal Access Controller Access-Control System (TACACS) is less secure than XTACACS, which is a
proprietary extension of TACACS, and less secure than TACACS+, which replaced TACACS and XTACACS.