CompTIA Security+ Question K-13

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

Answer: B,D

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.

CompTIA Security+ Question J-35

Environmental control measures include which of the following?

A. Access list
B. Lighting
C. Motion detection
D. EMI shielding

Answer: D

Explanation:
Environmental controls include HVAC, Fire Suppression, EMI Shielding, Hot and Cold Aisles, Environmental monitoring as well as Temperature and Humidity controls.

CompTIA Security+ Question F-76

The datacenter manager is reviewing a problem with a humidity factor that is too low. Which of the following environmental problems may occur?

A. EMI emanations
B. Static electricity
C. Condensation
D. Dry-pipe fire suppression

Answer: B

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.

CompTIA Security+ Question D-83

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

Answer: A

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.

CompTIA Security+ Question B-97

Which of the following is an attack vector that can cause extensive physical damage to a datacenter without physical access?

A. CCTV system access
B. Dial-up access
C. Changing environmental controls
D. Ping of death

Answer: C

Explanation:
Environmental systems include heating, air conditioning, humidity control, fire suppression, and power systems. All of these functions are critical to a well-designed physical plant. A computer room will typically require full-time environmental control. Changing any of these controls (when it was set to its optimum values) will result in damage.

CompTIA A+ Question G-48

A company has experienced recent heat wave conditions that have caused blackouts. The company is concerned about possible data corruption. Which of the following would help mitigate their concerns?

A. Battery backup
B. Proper ventilation
C. Humidity control
D. Surge suppressor

Correct Answer: A