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: Apr 27, 2026

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Question 1

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 2

Do you need to consider bullet (ballistics) protection when designing a data center?

A : Bullet (ballistics) protection is required by ANSI/TIA-942 for all data centers.

B : Bullet (ballistics) protection is only required when the data center is located in an area with a high crime rate.

C : Bullet (ballistics) protection is required by ANSI/TIA-942 for data centers Rated 3

D : Bullet (ballistics) protection is only required if the facility is a potential target or the building is in the vicinity of a potential target.

Answer: D

Question 3

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

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

A data center scores Rated-3 in mechanical, Rated-4 in electrical, and Rated-2 in architectural. What is the overall Rating of this data center when the Rating is based on the ANSI/TIA-942?

A : Rated-2 since that is the lowest rating received

B : Rated-4 since that is the highest rating received

C : Rated-4 since electrical is more important than mechanical and architectural

D : Depends on the Rating scored in telecommunications

Answer: A

Page: 1 / 31

Total 152 Questions | Updated On: Apr 27, 2026

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