Which of the following results in datacenters with failed humidity controls? (Select TWO).

A.
Excessive EMI

B.
Electrostatic charge

C.
Improper ventilation

D.
Condensation

E.
Irregular temperature

Explanation:
Humidity control prevents the buildup of static electricity in the environment. If the humidity drops much
below 50 percent, electronic components are extremely vulnerable to damage from electrostatic shock.
Most environmental systems also regulate humidity; however, a malfunctioning system can cause the
humidity to be almost entirely extracted from a room. Make sure that environmental systems are
regularly serviced. Electrostatic damage can occur when humidity levels get too low. Condensation is a
direct result from failed humidity levels.
Incorrect Answers:
A: Excessive EMI is resultant of failed EMI shielding.
C: Improper ventilation would be the result of failed HVAC system.
E: Irregular temperature would be resultant from failed temperature controls which is part of HVAC
system.

Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis,
2014, p. 383