Which of the following is an effective way to ensure the BEST temperature for all equipment within a
datacenter?

A.
Fire suppression

B.
Raised floor implementation

C.
EMI shielding

D.
Hot or cool aisle containment

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 tocool 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. This is a more effective way of controlling temperature to safeguard your equipment in a data
center.
Incorrect Answers:
A: Fire suppression, as part of computer center design, refers to the act of extinguishing fire vs preventing
a fire.
B: Raised floor implementation is done as part of a hot and cold aisle implementation where the cold air
used by the air handles is obtained from beneath the raised floor.
C: EMI shielding means that a computer system does not emit any significant amounts of EMI or RFI, or
be susceptible to fall victim to EMI or RFI attacks.

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