CDCS Actual Questions – Instant Download 60 Questions [Q21-Q41]

QUESTION 21
From the options indicated, what is the correct starting point for the raised floor installation?

QUESTION 22
What is the main disadvantage of using a ToR (Top of Rack) design?

QUESTION 23
Which formula is correct?

QUESTION 24
What is the minimum requirement for the power feeds to the building for a Rated-3 data center based on the ANSI/TIA-942 standard?

QUESTION 25
When are the wet bulb and dry bulb temperatures identical?

QUESTION 26
In order to save energy, you are going to install an automated system to switch off lights. What should be taken into consideration when installing such a system?

QUESTION 27
The computer room has high levels of H2S gas contamination. What is the best option to resolve this issue?

QUESTION 28
What is the calculation for the desired attenuation factor for shielding material?

QUESTION 29
Smoke sensors need to be tested to ensure that they pick up a potential fire in the data center.
What should you recommend?

QUESTION 30
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?

QUESTION 31
When designing a data center network, your company wants to minimize the number of network switches to manage.
What type of physical cabling layout would be the best choice?

QUESTION 32
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?

QUESTION 33
The building in which the computer room is housed is required to have a sprinkler system. The building is therefore equipped with a wet pipe system.
What action, if any, should you recommend for the computer room?

QUESTION 34
A computer room needs to be fitted out with a gas-based fire suppression system. The computer room will be a high-density data center with about 30% of the racks being closed circuit cooling blade-center racks.
Should the supplier of the fire suppression system be informed on the design of the racks?

QUESTION 35
The ‘maximum exposed area’ of the fire-rated glass is defined by the supplier as 3 sqm/32 sqft. The window area is 4 sqm/43 sqft.
What would be the best option?

QUESTION 36
A data center requires an audit to find out whether it conforms with ANSI/TIA-942 Rated-3 (concurrently maintainable).
Will the network architecture be part of this audit?

QUESTION 37
What is a potential disadvantage of using water mist as a fire extinguishing system?

QUESTION 38
When shielding material reaches its saturation point, what will be the impact?

QUESTION 39
What is the advantage or disadvantage of using MPO (Multi-fiber Push On)/pre-terminated fiber?

QUESTION 40
An MCB needs to be installed in the PDU of an air-conditioner unit.
Which breaking curve should you select?

QUESTION 41
You are allowed to use a calculator for this question.
A computer room has a net volume of approximately 2,500 m³ / 88,287 ft³.
The temperature is 20 °C / 68 °F.
The required design concentration is 7%.
The S-Factor is 0.1359 (metric) / 1.885 (imperial).
Calculate the amount of gas required for this computer room based on FM200. What is the correct weight?