Certified Data Centre Specialist

Here you have the best Exin CDCS practice exam questions

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  • These questions were last updated on May 9, 2026
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Question 1 of 59

A 5kW (power consumption) server keeps crashing with the message ‘temperature too high’.

  • The intake temperature is measured at 25 °C/77 °F and a relative humidity (RH) level of 50%.
  • The exhaust temperature is 29 °C/84 °F and 45% RH.
  • The raised floor is providing adequate amount of CFM/CMH at a reasonable velocity.
  • The pressure under the raised floor is approximately 25 Pa/0.1 inch H20.

Analyze the situation and indicate what the most likely cause is for this server to crash.

Answer

Suggested Answer

The suggested answer is A.

Community Votes1 vote
ASuggested
100%
Question 2 of 59

What is the main disadvantage of using a ToR (Top of Rack) design?

Answer

Suggested Answer

The suggested answer is C.

Community Votes1 vote
CSuggested
100%
Question 3 of 59

The location of a data center is just above the Arctic Circle (North Pole). The outside air temperature is never above 21 °C/70 °F.

Taking energy efficiency as the highest priority, which cooling system should you recommend?

Answer

Suggested Answer

The suggested answer is D.

Question 4 of 59

When are the wet bulb’s and dry bulb’s temperature identical?

Answer

Suggested Answer

The suggested answer is D.

Question 5 of 59

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?

Answer

Suggested Answer

The suggested answer is D.

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