The datacenter design team is implementing a system, which requires all servers installed in racks to face
in a predetermined direction. AN infrared camera will be used to verify that servers are properly racked.
Which of the following datacenter elements is being designed?

A.
Hot and cold aisles

B.
Humidity control

C.
HVAC system

D.
EMI shielding

Explanation:
There are often multiple rows of servers located in racks in server rooms. The rows of servers are known
as aisles, and they can be cooled as hot aisles and cold aisles. With a hot aisle, hot air outlets are used to
cool the equipment, whereas with cold aisles, cold air intake is used to cool the equipment. Combining
the two, you have cold air intake from below the aisle and hot air outtake above it, providing constant
circulation.Infrared cameras are heat detection measures thus it is hot and cold aisle design elements.
Incorrect Answers:
B: Humidity control is part of the HVAC system to provide reliable service that is required in a server room
C: HVAC system is used to control heating, ventilation and air conditioning in the server room and not just
the heat detection required for hot and cold aisle design elements.
D: EMI shielding refers to the process of preventing electronic emissions from your computer systems
from being used to gather intelligence and preventing outside electronic emissions from disrupting your
information-processing abilities.

Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis,
2014, pp. 380, 382