Which of the following statements pertaining to air conditioning for an information processing facility is TRUE?

A.
The AC units must be controllable from outside the area.

B.
The AC units must keep negative pressure in the room so that smoke and other gases are forced out of the
room.

C.
The AC units must be on the same power source as the equipment in the room to allow for easier
shutdown.

D.
The AC units must be dedicated to the information processing facility.

Explanation:
The AC units used in an information processing facility must be dedicated and controllable from within the area.
They must be on an independent power source from the rest of the room and have a dedicated Emergency
Power Off switch. It is positive, not negative pressure that forces smoke and other gases out of the room.
Incorrect Answers:
A: The AC units must be controllable from inside the area, not outside the area. Therefore, this answer is
incorrect.
B: The AC units must keep positive pressure in the room, not negative pressure so that smoke and other gases
are forced out of the room. Therefore, this answer is incorrect.
C: The AC units must be on a different power source as the equipment in the room to allow for easier
shutdown. Therefore, this answer is incorrect.