A company storing data on a secure server wants to ensure it is legally able to dismiss and prosecute staff who
intentionally access the server via Telnet and illegally tamper with customer data. Which of the following
administrative controls should be implemented to BEST achieve this?

A.
Command shell restrictions

B.
Restricted interface

C.
Warning banners

D.
Session output pipe to /dev/null

Explanation:
Within Microsoft Windows, you have the ability to put signs (in the form of onscreen pop-up banners) that
appear before the login telling similar information—authorized access only, violators will be prosecuted, and so
forth. Such banners convey warnings or regulatory information to the user that they must “accept” in order to
use the machine or network. You need to make staff aware that they may legally be prosecuted and a message
is best given via a banner so that all staff using workstation will get notification.