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Pass Guaranteed 2026 Marvelous CDCS: Valid EXIN EPI Certified Data Centre Specialist Test Notes

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EXIN CDCS Exam Syllabus Topics:

Topic
Details

Topic 1

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 2

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 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.

>> Valid CDCS Test Notes <<

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EXIN EPI Certified Data Centre Specialist Sample Questions (Q11-Q16):

NEW QUESTION # 11
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?

A. ToR (Top of Rack) design
B. EoR (End of Row) design
C. Star network design using coaxial cables
D. It does not matter as the number of switches is not influenced by the physical cabling layout

Answer: B

Explanation:
An End of Row (EoR) design minimizes the number of network switches, as multiple racks can share a single switch at the end of a row, reducing switch counts and simplifying management. This design centralizes network switching to fewer points, which reduces the complexity and number of switches required compared to a Top of Rack (ToR) design, where each rack typically has its own switch.
Detailed Explanation:
In EoR designs, each row has a single network switch that handles the connections for all racks within that row. This reduces the number of individual switches needed and centralizes network management, which is ideal for minimizing equipment and simplifying infrastructure in the data center.
EPI Data Center Specialist References:
EPI promotes the EoR design as a way to reduce switch counts and streamline management in data centers.
This configuration allows for easier scaling and maintenance while maintaining efficient network connectivity.

NEW QUESTION # 12
You have three UPS systems connected in parallel. The UPS systems have an imbalance in the load sharing of approximately 20%.
What should you recommend?

A. Review the harmonics levels within the computer room
B. Nothing, there is no reason for any concern
C. Review the common mode noise levels within the computer room
D. Review the cable lengths of each UPS to the common busbar

Answer: D

Explanation:
An imbalance in load sharing between UPS systems connected in parallel can often result from unequal cable lengths to the common busbar. If the cabling from each UPS to the busbar varies significantly in length, it can lead to differences in impedance, resulting in uneven load distribution. Ensuring that cable lengths are consistent helps to balance the load sharing across the UPS systems.
Detailed Explanation:
Parallel UPS systems rely on uniform impedance to share loads evenly. Differences in cable lengths cause variations in resistance, leading to one or more UPS units carrying a disproportionate share of the load. Standardizing cable lengths ensures equal impedance, which promotes balanced load sharing and prevents one UPS from being overburdened, thus maintaining overall system reliability.
EPI Data Center Specialist References:
EPI guidelines recommend checking cable lengths when load imbalances occur in parallel UPS configurations. Ensuring equal lengths is a common method to resolve impedance issues that affect load distribution, which is critical for the stable operation of redundant power systems.

NEW QUESTION # 13
Maximum exposed area of fire-rated glass is 2 m², but the window is 5 m². What is the best option?

A. Replace with normal glass
B. Split into two equal parts with silicone
C. Split into two equal parts with aluminum frame
D. Split into smaller parts within 2 m² using fire-rated frames

Answer: D

Explanation:
Fire-rated glass must be installed within manufacturer's tested maximum exposed area. Oversized panes risk failure under fire conditions. If the window exceeds 2 m², the correct approach is to subdivide it into smaller sections, each #2 m², using approved fire-rated frames.
Options B and C (silicone or aluminum splits) are not certified fire-rated framing methods. Option A is unsafe because normal glass provides no fire protection.
Therefore, option D ensures compliance and safety.
References: EN 1363-1 (Fire Resistance Tests), NFPA 80 (Fire Doors & Windows).

NEW QUESTION # 14
From the options indicated, what is the correct starting point for the raised floor installation?

A. Point B
B. Point A
C. Point D
D. Point C

Answer: A

Explanation:
When installing a raised floor, the best starting point is typically from the farthest corner away from the entrance, in this case, Point B. This method allows for the floor installation to progress towards the entrance, ensuring that workers can avoid walking over the newly installed tiles, thus minimizing the risk of damage and maintaining cleanliness during installation.
Detailed Explanation:
Starting at the farthest corner (Point B) and working towards the entrance (Point A) is a standard practice in raised floor installation. This approach ensures that installers do not walk over freshly laid tiles, which could lead to shifting or misalignment. Additionally, it allows for more controlled placement and alignment, as well as convenient egress when installation is complete.
EPI Data Center Specialist References:
EPI guidelines for raised floor installation emphasize beginning at the farthest point from the entrance and working back towards it, which aligns with industry best practices for efficiency and quality assurance. This method reduces potential damage and supports precise alignment across the floor area.

NEW QUESTION # 15
What is the effect of having a damper (in open position) construction in a raised-floor tile?

A. Dampers can be used when there is a high rate of temperature change in the computer room
B. Dampers allow for a higher supply air temperature
C. Dampers increase the air volume by approximately 10%
D. Dampers reduce the air volume by approximately 10%

Answer: D

Explanation:
Perforated tiles with integrated dampers are common in raised-floor data centers because they allow airflow regulation at the rack level. However, even when the damper is fully open, the mechanism inside the tile restricts airflow. This typically reduces the delivered airflow by around 10% compared to a non-dampered tile of the same type.
* Option A is incorrect because dampers do not affect supply temperature; they only throttle volume.
* Option B is wrong since dampers cannot increase volume-they only add resistance.
* Option D is partially true that dampers help with temperature balancing, but the main effect (in open position) is volume reduction.
Thus, the technical impact of dampers in open position is a slight airflow reduction, usually quantified as
~10%.
References: ASHRAE TC 9.9 - "Airflow Management in Raised-Floor Environments," ANSI/TIA-942-B §6.
5 (Cooling Infrastructure).

NEW QUESTION # 16
......

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