Which of the following results in datacenters with failed humidity controls? (Choose 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.