Which of the following presents the STRONGEST access control?

A.
MAC

B.
TACACS

C.
DAC

D.
RBAC

Explanation:
A: With Mandatory Access Control (MAC) all access is predefined. This makes it the strongest access
control of the options presented in the question.
Incorrect Answers:
B: TACACS refers to a client-server-oriented environment similar to that of RADIUS and is in essence an
authentication service. It is an older authentication protocol common to UNIX networks that allows a
remote access server to forward a user’s logon password to an authentication server to determine
whether access can be allowed to a given system.
C: With Discretionary Access Control (DAC) access control incorporates some flexibility.
D: With Role-Based Access Control (RBAC) access control allows the user’s role to dictate access
capabilities.
Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis,
2014, pp. 146, 150