Achieve The Utmost Performance In CDCS Exam Pass Guaranteed [Q15-Q33]

Posted On February 13, 2026

Achieve The Utmost Performance In CDCS Exam Pass Guaranteed

Achive your Success with Latest EXIN CDCS Exam

EXIN CDCS Exam Syllabus Topics:

Topic	Details
Topic 1	Data Centre Life Cycle and Standards: This section of the exam measures the skills of data center professionals and covers the various stages involved in the life cycle of a data center, from planning and design to implementation and decommissioning.
Topic 2	Designing and Implementing a Data Centre: In this module, the exam assesses the knowledge of Exin data center professionals tasked with the design and implementation of data centers. Candidates will learn the key principles of creating an efficient data center layout, including considerations for scalability, redundancy, and security.
Topic 3	Data Centre Environmental Considerations and Efficiency: This section evaluates the proficiency of data center professionals in addressing environmental factors and promoting efficiency within data center operations. The target audience, including data center managers and engineers, will be tested on their ability to identify and implement measures that enhance energy efficiency, cooling management, and sustainable practices.

QUESTION 15
The noise levels in the data center are approximately 91 dB (A).
Do employers need to take precautions?

No, anything less than 100 dB (A) is acceptable.

There are no regulations regarding noise levels inside a building. Regulations only apply to noise pollution outside of the building.

As long as the data is compliant to ISO/IEC 27001 it is acceptable.

Yes, since it is mandated by regulations.

QUESTION 16
Racks with 1.0 m depth and cold aisle containment with 3 perforated tiles are used. What aisle pitch is recommended?

5 tiles pitch rule

7 tiles pitch rule

8 tiles pitch rule

10 tiles pitch rule

QUESTION 17
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?

Standard air conditioning units, as spares might not be readily available

Any cooling system can be efficient because the outside air temperature will not influence the temperature of the air intake of the ICT equipment

Waterside economizer

Airside economizer

QUESTION 18
From the options indicated, what is the correct starting point for the raised floor installation?

Point A

Point B

Point C

Point D

QUESTION 19
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?

No, as concurrently maintainable only applies to electrical and mechanical (power and cooling).

Yes, but only if the network administration does not comply with ANSI/TIA-606.

Yes, amongst other aspects, the network architecture should be Rated-3 compliant with the requirements of ANSI/TIA-942.

No, only the type of cabling used will be audited.

QUESTION 20
Smoke sensors need to be tested to ensure that they pick up a potential fire in the data center.
What should you recommend?

Test the sensors by injecting smoke or simulated smoke directly into the sensor

Press the self-test button on each sensor in the data center

Inject smoke at the floor level

Test the sensors according to the vendor specification

QUESTION 21
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?

ToR (Top of Rack) design

EoR (End of Row) design

Star network design using coaxial cables

It does not matter as the number of switches is not influenced by the physical cabling layout

QUESTION 22
When installing a raised floor, can we use a spirit level bar to level the floor?

Yes, spirit level bars can be used as long as their length is longer than 60 cm/2 ft (the size of a typical raised floor tile).

No, because using a spirit level bar, a measurement error will be transferred from pedestal to pedestal.

Yes, but spirit level bars can only be used in the vertical plane.

Yes, using a spirit level bar for raised floors higher than 40 cm is preferred.

QUESTION 23
The UPS of a data center with ANSI/TIA-942 Rating-4 is installed with the rectifier connected to power feed A and the bypass/reserve input connected to power feed B. To which feed will the UPS output be synchronized?

Feed A

Feed B

The UPS will not synchronize to any feed but use an internal clock

Depends on UPS settings, as it can be set to either feed

QUESTION 24
What is a potential disadvantage of using a hypoxic-based fire suppression system as a fire extinguishing system?

It can only be used in computer rooms which have sufficient air changes per hour.

The gas containers need to be close to the hazard area.

It can only be used in non-continuous occupied areas.

It can only be used in computer rooms where you have sufficient positive pressure.

QUESTION 25
A data center scores Rated-3 in mechanical, Rated-4 in electrical, and Rated-2 in telecommunications. What is the overall rating?

Rated-2

Rated-4

Rated-4 since electrical is most important

Depends on architectural rating

QUESTION 26
The temperature in the computer room is increased from 18 °C (64 °F) to 27 °C (81 °F). What is the impact on the amount of gas required to suppress a fire assuming a halocarbon agent?

The amount of gas required will be higher

The amount of gas required will not change

The amount of gas required will be less

The change cannot be determined without knowing the change in humidity as well

QUESTION 27
The humidity in the computer room has increased from about 60% up to 85% Relative Humidity (RH). What potential risk does this pose to your equipment?

No risks at all

The risk of excessive wear and corrosion will increase

The electrostatic discharge (ESD) levels will go up

There will be a cooling risk due to a high wet bulb temperature

QUESTION 28
Which formula is correct?

Phase-to-Neutral Voltage = Phase-to-Phase voltage * 1.732

Phase-to-Neutral Voltage = Phase-to-Phase voltage /1.732

Phase-to-Neutral Voltage = Phase-to-Neutral voltage * 1.732

Phase-to-Neutral Voltage = (Phase-to-Phase voltage * 1.732) / Phase-to-Neutral Voltage

QUESTION 29
What should be considered when installing overhead data cabling?

To maintain minimum separation from power and ensure that the fire detection and suppression systems are not hindered.

Copper data cabling should not be placed in metal cable trays.

Optical fiber cabling should always be positioned on top of the copper cabling in the same cable tray to avoid damage to the sensitive optical fiber.

All cabling should make sharp bends directly into the rack to avoid usage of additional space and blocking the airflow on top of the rack.

QUESTION 30
What is the risk of high levels of hydrogen sulfide (H#S) in the computer room?

There is no risk

H#S impacts the static properties of the floor

H#S can cause corrosion which impacts reliability of equipment

H#S impacts gas-based fire suppression system operation

QUESTION 31
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?

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

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

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.

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

QUESTION 32
The temperature in the computer room is being increased from 18°C/64°F to 27°C/81°F.
What is the impact, if any, on the amount of gas required to suppress a fire assuming the gas is a Halocarbon?

The amount of gas required will be higher

The amount of gas required will not change

The amount of gas required will be lower

The change to the amount of gas cannot be determined without knowing the change in humidity as well

QUESTION 33
You want to manage temperature and humidity only at the facility level in your data center. All servers use front-to-rear airflow. Which location for measurement should you recommend?

At the back/rear of the server at 50 mm (2 in)

At 1.5 m (5 ft) above the floor, 0.4 m (15 in) in front of the rack

At the front/intake of the server at 50 mm (2 in)

At 1.5 m (5 ft) above the floor, 0.4 m (15 in) at the back of the rack