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2026 Updated 100% Free CDCS–100% Free Dump File | Latest EXIN EPI Certified Data Centre Specialist Test Online

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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

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.

Topic 3

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.

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Latest training guide for EXIN CDCS

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EXIN EPI Certified Data Centre Specialist Sample Questions (Q50-Q55):

NEW QUESTION # 50
What is the sensible heat ratio (SHR)?

A. Ratio of the sensible heat to the total of sensible plus latent heat to be removed from a conditioned space

B. Ratio of the latent heat to the total of sensible plus latent heat to be removed from a conditioned space

C. Ratio of cold-air supply to hot-air return temperature of a cooling system

D. Ratio of the cold-aisle temperature to the hot-aisle temperature

Answer: A

Explanation:
SHR = Sensible Load / (Sensible + Latent Load); it describes the portion of the total cooling that is sensible (temperature change) versus latent (moisture removal).
References: ASHRAE Fundamentals Handbook (Psychrometrics/Load Calculations), ASHRAE TC 9.9.

NEW QUESTION # 51
What is the advantage or disadvantage of using MPO (Multi-fiber Push On)/pre-terminated fiber?

A. It speeds up installation and provides an easy upgrade to transmission speeds up to 40 Gbit/s -100 Gbit/s.

B. There is no advantage, as it creates additional heat load in the data center.

C. There is no advantage, as it cannot be used with OM4 optical fiber cables.

D. It is a very flexible system as it can be used for both copper cables and optical fiber cables.

Answer: A

Explanation:
MPO (Multi-fiber Push On) pre-terminated fiber offers the advantage of quick installation and supports high-speed upgrades up to 40 Gbit/s and 100 Gbit/s. This technology simplifies connections by allowing multiple fibers to be connected in a single plug-and-play module, reducing installation time and making future expansions or upgrades to higher speeds easier.
Detailed Explanation:
MPO connectors consolidate multiple fiber connections into a single interface, which simplifies cable management and reduces installation complexity. This setup is particularly beneficial in data centers where high-speed networks are essential, and where rapid deployment is necessary. MPO pre-terminated fiber also supports the use of OM4 fiber, making it compatible with existing high-performance cabling infrastructure.
EPI Data Center Specialist References:
EPI training highlights that pre-terminated fiber solutions, like MPO, can greatly enhance efficiency in data centers. By reducing installation time and providing scalability for higher transmission speeds, they align with best practices for maintaining flexible and future-ready network infrastructure.

NEW QUESTION # 52
When shielding material reaches its saturation point, what will be the impact?

A. The shielding material will no longer be able to attenuate (reduce) additional EMF.

B. The shielding material will increase its permeability factor.

C. The shielding material will reach its optimal shielding performance state.

D. The shielding material will reach its maximum electrically charged state.

Answer: A

Explanation:
When shielding material reaches its saturation point, it can no longer effectively attenuate additional EMF. At saturation, the material's ability to absorb or redirect magnetic fields is exhausted, meaning it cannot provide further shielding beyond this point. Additional EMF exposure would pass through the material without significant reduction.
Detailed Explanation:
Saturation occurs when the material's magnetic domains are fully aligned with the magnetic field, leaving no capacity to absorb or deflect further EMF. This can happen with high EMF levels, beyond the material's design limits, resulting in a breakdown of shielding effectiveness.
EPI Data Center Specialist References:
EPI guidelines on EMF management indicate that selecting appropriate shielding materials with sufficient capacity is essential to prevent saturation and ensure continuous protection. Saturation limits should be considered during design to avoid compromised shielding performance.

NEW QUESTION # 53
What is the main disadvantage of using a ToR (Top of Rack) design?

A. There will be more switches to manage.

B. A single ToR (Top of Rack) switch is more expensive than an EoR (End of Row) switch.

C. A ToR (Top of Rack) switch has only optical interfaces.

D. You need a separate rack to install all your ToR (Top of Rack) switches.

Answer: A

Explanation:
A Top of Rack (ToR) design typically requires more switches because each rack has its own switch to manage network connections, as opposed to End of Row (EoR) or centralized designs, which consolidate switches.
While ToR designs improve cabling efficiency and reduce latency, they also increase the number of switches, thus raising management complexity and potentially increasing capital and operational costs.
Detailed Explanation:
In a ToR setup, each rack's individual switch allows for quick access and streamlined cabling within the rack.
However, this setup means more devices to configure, monitor, and maintain, which can increase administrative overhead and network management complexity.
EPI Data Center Specialist References:
EPI documentation notes that ToR designs can improve performance but also lead to increased management needs due to the higher switch count, making them less ideal in environments where simplified network management is prioritized.

NEW QUESTION # 54
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?

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

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

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

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

Answer: B

Explanation:
ASHRAE recommends temperature and humidity be measured in the cold aisle, in front of racks, at approximately 1.5 m above the floor (average human working height) and 0.3-0.5 m from the rack face. This location captures the environmental conditions experienced at the IT equipment air intake, while still representing facility-level conditions (not single device-level).
* Option A and C (at 50 mm intake/rear) are too close to individual servers and suited only for rack-level monitoring, not facility monitoring.
* Option D (rear measurement) reflects exhaust air, not intake, and thus cannot be used to control environmental setpoints.
Maintaining measurement at standardized facility locations allows comparisons against ASHRAE's recommended and allowable ranges (18-27 °C for Class A1 environments, 40-60% RH).
References: ASHRAE TC 9.9 "Thermal Guidelines for Data Processing Environments" (2016), ANSI/TIA-
942-B §6.5.

NEW QUESTION # 55
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