100% Free Exin CDCS Practice Test Questions and Answers 2026

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Total 152 Questions | Updated On: May 22, 2026

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Question 1

A computer room needs to be fitted out with a gas-based fire suppression system. The computer room will be a high-density data center with about 30% of the racks being closed circuit cooling blade-center racks. Should the supplier of the fire suppression system be informed on the design of the racks?

A : No, cooling and design of racks have no influence on the fire suppression system design.

B : Only when the rack height obstructs a potential fire suppression release point.

C : Yes, the design of the racks has an influence on the fire suppression system design.

D : Only when the racks might block access to the fire panel.

Answer: C

Question 2

The humidity in the computer room has changed from about 50% down to 35% Relative Humidity (RH). What influence does this have on Electrostatic Discharge (ESD)?

A : No influence as long as the temperature is at approximately 20Â°CÂ°F

B : Relative humidity has no influence on ESD

C : ESD levels will go up

D : ESD levels will go down

Answer: C

Question 3

True or False: A grounded wire is connected to metal appliance cases

A : True

B : False

Answer: A

Question 4

If a waveform period is determined to be 10 microseconds in duration, what is the frequency of the signal?

A : 100 kHz

B : 10 kHz

C : 1000 Hz

D : 100 Hz

Answer: A

Question 5

Every air distribution system has a ____________ system and a _________ system

A : Supply, Release

B : Supply, Return

C : Supply, Reverse

D : Maintenance, Regulation

Answer: B

Page: 1 / 31

Total 152 Questions | Updated On: May 22, 2026

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