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Exin CDCS Dumps - Pass EXIN EPI Certified Data Centre Specialist Exam in First Attempt 2026
The Exin CDCS exam is part of the Data Centre Specialist certification path and focuses on the core knowledge needed to work with modern data centre environments. It is designed for candidates who want to validate their understanding of data centre design, implementation, environmental efficiency, and lifecycle standards. This certification matters for professionals who support reliable, efficient, and well-managed data centre operations. With the right preparation, you can approach the EXIN EPI Certified Data Centre Specialist exam with more confidence and clarity.
EXIN CDCS Exam Topics
| # | Exam Topics | Sub-Topics | Approximate Weightage (%) |
|---|---|---|---|
| 1 | Data Centre Environmental Considerations and Efficiency | Power usage and energy efficiency, cooling and airflow management, environmental impact, sustainability practices | 35% |
| 2 | Designing and Implementing a Data Centre | Site planning and layout, infrastructure components, implementation planning, availability and resilience | 40% |
| 3 | Data Centre Life Cycle and Standards | Lifecycle phases, operational governance, standards and compliance, maintenance and improvement | 25% |
This exam tests more than memorization. Candidates need practical knowledge of data centre concepts, the ability to understand design and efficiency considerations, and familiarity with lifecycle and standards-related practices. Strong preparation should help you connect theory with real-world implementation and operational decision-making.
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Frequently Asked Questions
The questions for CDCS were last updated on Jun 4, 2026.
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A data center has its own power supply from the public utility and receives chilled water supply from the building owner.
What needs to be taken into consideration when calculating the PUE?
When calculating Power Usage Effectiveness (PUE) in a data center that uses chilled water from an external source, like from a building owner, a weight factor for district chilled water must be applied. This is because PUE calculations aim to measure the energy efficiency of the data center's own operations, and external utilities like district chilled water aren't directly powered by the data center. A weight factor of 0.4 is typically used to account for the energy consumed to produce and deliver the chilled water, reflecting the indirect impact on the data center's total energy consumption.
Detailed Explanation:
PUE is calculated as the ratio of the total facility energy to the IT equipment energy. If the cooling is provided by an external chilled water source, it's necessary to adjust the calculations to accurately reflect the energy impact. By incorporating the 0.4 weight factor, data centers can calculate a more accurate PUE, aligning with standard methods and industry best practices.
EPI Data Center Specialist Reference:
EPI training on PUE highlights the importance of adjusting for external energy sources, such as district cooling, in the calculations. This ensures that PUE values remain accurate and comparable across different data centers, even when external utilities are used.
What precaution shall be taken for cabling leading into an equipment rack when a data center is in a seismic-prone area?
In seismic-prone areas, cables should be tightly secured to racks and cable trays to minimize movement during seismic activity. Properly securing the cables prevents them from being damaged due to excessive motion, which could lead to outages or damage to connected equipment.
Detailed Explanation:
Loose cables can be vulnerable to shaking or sudden jolts during an earthquake, increasing the risk of disconnection or damage. By tightly organizing and securing cables, you ensure they remain in place, even during significant movement, thereby maintaining connection integrity and reducing the risk of physical damage.
EPI Data Center Specialist Reference:
EPI training includes considerations for data centers in seismic zones, advising that cables be firmly anchored to support structures to reduce movement and mitigate potential damage during seismic events.
You are allowed to use a calculator for this question.
A computer room has a net volume of approximately 2,500 m / 88,287 ft.
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?
The amount of FM200 gas required can be calculated using the formula:
Weight of Gas=Net VolumeDesign ConcentrationS-Factor\text{Weight of Gas} = \text{Net Volume} \times \text{Design Concentration} \times \text{S-Factor}Weight of Gas=Net VolumeDesign ConcentrationS-Factor
Using metric units:
Net Volume: 2,500 m
Design Concentration: 7% (or 0.07)
S-Factor: 0.1359
Calculation:
2,500m30.070.1359=821.325kg2,500 \, \text{m}^3 \times 0.07 \times 0.1359 = 821.325 \, \text{kg}2,500m30.070.1359=821.325kg
Rounded to the closest answer: 820 kg
In imperial units:
Net Volume: 88,287 ft
S-Factor: 1.885
Calculation:
88,287ft30.071.885=1,165.27lbs88,287 \, \text{ft}^3 \times 0.07 \times 1.885 = 1,165.27 \, \text{lbs}88,287ft30.071.885=1,165.27lbs
Rounded, this is approximately 1,800 lbs.
EPI Data Center Specialist Reference:
EPI instructs on using specific formulas and S-factors provided by manufacturers for each gas type, ensuring that calculations reflect the correct concentration for the given room volume.
Do all residual current devices (RCDs) use the same operating principle?
Residual current protection has evolved:
ELCB (Earth Leakage Circuit Breaker): Older type; voltage-operated. It trips when voltage develops between earth and exposed metal.
RCD/RCCB (Residual Current Device/Circuit Breaker): Current-operated. It detects imbalance between live and neutral conductors (indicating leakage current to earth).
Modern data centers use RCDs/RCCBs exclusively, since ELCBs are obsolete and unreliable if multiple earth connections exist. Thermal-magnetic breakers (D) provide overcurrent protection, not earth leakage.
Thus, not all residual current devices are based on the same principle.
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?
Design concentrations for halocarbons (e.g., FM-200/HFC-227ea, Novec 1230) increase with ambient temperature; higher temperature higher minimum extinguishing concentration more agent mass.
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