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 #9

Which standard defines the requirements for network administration?

A. ASHRAE

B. ANSI/TIA-606

C. ISO/IEC 30129

D. ANSI/TIA-568

Discussion 0

Correct Answer: B Vote an answer

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Question #10

The data center has been in operation for about 1 year and 2 months. The dust levels in the computer room are relatively high.
What is the most likely root cause?

A. Low pressure in the computer room

B. The cleaning crew is not doing their work properly

C. Floorboards are most likely not fitted correctly

D. Every computer room has high dust levels due to constant high-speed air movement

Discussion 0

Correct Answer: C Vote an answer

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Question #11

When are the wet bulb and dry bulb temperatures identical?

A. When the dry bulb's temperature is at the lowest allowable temperature for IT equipment as per ASHRAE

B. When the dry bulb's temperature is at the highest allowable temperature for IT equipment as per ASHRAE

C. When the relative humidity is 100%

D. When the relative humidity is at the best practice value for relative humidity, being 50% RH

Discussion 0

Correct Answer: C Vote an answer

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Question #12

An MCB needs to be installed in the PDU of an air-conditioner unit.
Which breaking curve should you select?

A. A-Curve

B. C-Curve

C. D-Curve

D. B-Curve

Discussion 0

Correct Answer: B Vote an answer

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Question #13

The logical overview of the data center looks as pictured below. To what TIA-942 Rating is this design made based on electrical only?

A. Rating-2

B. Rating-1

C. Rating-3

D. Rating-4

Discussion 0

Correct Answer: D Vote an answer

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Question #14

A customer requires THDi from the UPS not to exceed 3% and wants high efficiency. The UPS has a 6-pulse SCR/thyristor rectifier and is loaded ~80%. Many ICT changes are expected in the next 3 years. What should you recommend?

A. Install an active harmonic filter on the UPS

B. Nothing; the UPS will keep THDi at the right levels

C. Install an isolation transformer rated K13 or K20

D. Install a passive harmonic filter on the UPS

Discussion 0

Correct Answer: A Vote an answer

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Question #15

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

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

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

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

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

Discussion 0

Correct Answer: C Vote an answer

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Question #16

A data center scores Rated-3 in mechanical, Rated-4 in electrical, and Rated-2 in telecommunications. What is the overall rating?

A. Rated-4 since electrical is most important

B. Rated-2

C. Depends on architectural rating

D. Rated-4

Discussion 0

Correct Answer: B Vote an answer

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