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.