Free Exin CDCS Exam Questions

Become Exin Certified with updated CDCS exam questions and correct answers

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Total 152 Questions | Updated On: Feb 06, 2026

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Question 1

What indicates the breaking capacity of a fuse or breaker?

A : Mechanical strength of the casing of a fuse or breaker.

B : The maximum voltage, in case of an electrical surge, that the fuse or breaker can handle without being destroyed or causing an electric damaging arc.

C : The current at which the device will trip.

D : The current that a fuse or breaker is able to interrupt without being destroyed or causing an electric damaging arc.

Answer: D

Question 2

True or False: Human error is a major cause of data center downtime

A : ue

B : lse

Answer: A

Question 3

Is it allowed to make design changes during the implementation phase?

A : No, after a design freeze no further changes are allowed.3

B : Any change is fine as long as it is within the scope of the project.

C : Yes, but only when time to implement is not exceeded.

D : Only when there is a strong business and/or technical justification.

Answer: D

Question 4

You have three UPS systems connected in parallel. The UPS systems have an imbalance in the load sharing of approximately 20%. What should you recommend?

A : Review the cable lengths of each UPS to the common busbar

B : Nothing, there is no reason for any concern

C : Review the common mode noise levels within the computer room

D : Review the harmonics levels within the computer room

Answer: A

Question 5

An air-conditioner unit needs to be selected. Two types are available: Unit-A has a Sensible Heat Ratio (SHR) of 0.7. Unit-B has a Sensible Heat Ratio (SHR) of 0.9. From an efficiency point of view, which one should be selected?

A : It does not matter, as the Sensible Heat Ratio has nothing to do with efficiency

B : Not relevant, as Sensible Heat Ratio is only specified for air-conditioner equipment to indicate the ratio between intake temperature and exhaust temperature.

C : Unit A

D : Unit B

Answer: D

Page: 1 / 31

Total 152 Questions | Updated On: Feb 06, 2026

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