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 11, 2026

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Question 1

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 2

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 3

Do you need to consider blast protection when designing a data center?

A : No, there is no reason for implementing blast protection as nobody can predict the impact of a bomb explosion.

B : Yes, if the data center is a potential target or the building is located within the vicinity of (close by) a potential target.

C : No, blast protection is not a requirement of ANSI/TIA-942.

D : Yes, blast protection is a requirement of ANSI/TIA-942.

Answer: B

Question 4

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 5

The pipes of a VESDA smoke detection system are installed at the air intake of the air conditioner inside the computer room. Is this a good practice from an early smoke detection point of view?

A : It depends on the type of gas-based fire suppression which will be installed.

B : Yes, as this reduces the amount of piping to be installed in the data center, as all air will go through the air conditioner.

C : No, the piping should be installed at the air exhaust of the air conditioner, as there can also be a fire inside the air conditioner itself.

D : No, it will give a longer reaction time for the smoke detection system and there might also be bypass airflow.

Answer: D

Page: 1 / 31

Total 152 Questions | Updated On: Feb 11, 2026

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