Free EXIN CDCS Practice Test & Real Exam Questions

Exam Code/Number: CDCS
Exam Name/Title: EXIN EPI Certified Data Centre Specialist
Certification Provider: EXIN
Corresponding Certification: EPI Data Centre

Exam Questions: 122
Updated On: Oct 01, 2026

Question #17

You are installing new copper cabling.
What is the advantage or disadvantage of choosing pre-terminated category 6 or 6A cabling?

A. Pre-terminated cabling is already factory tested and saves installation time.

B. Pre-terminated cabling has a higher fire rating.

C. Pre-terminated cabling makes ordering of the copper cables more complex, as you need to know in advance on which side the male or female connector needs to be located.

D. There is no advantage as most new copper cabling network designs are based on category 3 or 5E for horizontal cabling.

Discussion 0

Correct Answer: A Vote an answer

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Question #18

A data center has its own power supply from the public utility and receives chilled water supply from the building owner.
What needs to be taken into consideration when calculating the PUE?

A. You will need to take the value for COP of the chiller plant into consideration

B. You will need to take a weight factor of 0.4 for district chilled water into consideration

C. Nothing, as the chiller plant in the building also uses electrical power

D. PUE calculations are not possible in shared buildings

Discussion 0

Correct Answer: B Vote an answer

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Question #19

Where should perforated tiles be installed?

A. At the back of racks

B. One tile per rack in front

C. Every 5th rack

D. As close to AC as possible

Discussion 0

Correct Answer: B Vote an answer

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Question #20

Given: A = attenuation in dB, R = real measured value, M = maximum acceptable value. Which formula should be used to calculate the required attenuation factor of EMF shielding material?

A. A = 10 log (R/M)

B. A = 20 log (M/R)

C. A = 10 log (M/R)

D. A = 20 log (R/M)

Discussion 0

Correct Answer: C Vote an answer

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Question #21

What is the redundancy setup shown in the diagram?

A. 2(N+1)

B. N+2

C. 2+N+1

D. N+N+N

Discussion 0

Correct Answer: B Vote an answer

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Question #22

What is a potential disadvantage of using water mist as a fire extinguishing system?

A. It has droplets that are too small (100-120 microns) so it can only be used for small fires

B. It extracts oxygen from the air creating a potential risk for humans inside the computer room

C. It will rapidly increase the humidity level in the data center, which can cause a potential risk for the operation of the equipment

D. It only uses 10% of the water normally used in a water-based fire suppression, which might not be enough to suppress the fire

Discussion 0

Correct Answer: C Vote an answer

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Question #23

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. ESD levels will go up

B. Relative humidity has no influence on ESD

C. ESD levels will go down

D. No influence as long as the temperature is at approximately 20°C/77°F

Discussion 0

Correct Answer: A Vote an answer

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Question #24

Which of the following statements is correct?

A. With current increasing, single-phase cables emit more EMF than three-phase cables

B. With current decreasing, three-phase cables emit more EMF than single-phase cables

C. With voltage increasing, single-phase cables emit more EMF than three-phase cables

D. With voltage decreasing, three-phase cables emit more EMF than single-phase cables

Discussion 0

Correct Answer: A Vote an answer

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