Which will best secure the security of the computer systems in Certkiller ?

A.
With the implementation of the physical locks, there is n need for antitheft devices.

B.
Set up antitheft devices for all hardware.

C.
There is no need to lock the server racks, because there are locks on the doors.

D.
None of the above.

Explanation:
One of the most important aspects is to establishing antitheft devices for all hardware.
Incorrect
Answers:
A: Yes, physical lock is needed, but you also need antitheft devices.
C: The keys can fall into the wrong hands, so it is needed to lock the server racks.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, p. 464.