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[General] Free PDF 2026 CDCS: High Pass-Rate EXIN EPI Certified Data Centre Specialist Rel

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【General】 Free PDF 2026 CDCS: High Pass-Rate EXIN EPI Certified Data Centre Specialist Rel

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P.S. Free & New CDCS dumps are available on Google Drive shared by ExamsLabs: https://drive.google.com/open?id=1HfN5R4Lh6IaeKLY5DQiVGmtSp2dcBEy-
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EXIN CDCS Exam Syllabus Topics:
TopicDetails
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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EXIN EPI Certified Data Centre Specialist Sample Questions (Q120-Q125):NEW QUESTION # 120
What is a potential disadvantage of using water mist as a fire extinguishing system?
  • A. It will rapidly increase the humidity level in the data center, which can cause a potential risk for the operation of the equipment
  • B. It only uses 10% of the water normally used in a water-based fire suppression, which might not be enough to suppress the fire
  • C. It has droplets that are too small (100-120 microns) so it can only be used for small fires
  • D. It extracts oxygen from the air creating a potential risk for humans inside the computer room
Answer: A
Explanation:
A potential disadvantage of using a water mist fire suppression system is that it can rapidly increase the humidity within the data center, which may pose risks to sensitive electronic equipment. Excessive humidity can lead to condensation, which could damage electronics and lead to short circuits or corrosion over time.
Detailed Explanation:
Water mist systems use fine droplets to suppress fires by cooling and displacing heat. However, the moisture generated may raise the humidity level to the point where it exceeds safe operational limits for IT equipment.
Therefore, while water mist systems are effective in fire suppression, they may not be ideal in environments where high humidity could damage sensitive equipment.
EPI Data Center Specialist References:
EPI guidelines advise considering the impact of humidity from fire suppression systems, particularly in environments housing electronic equipment. It's essential to weigh the benefits of fire suppression against potential risks to operational equipment when choosing suppression methods.

NEW QUESTION # 121
An MCB needs to be installed in the PDU of an air-conditioner unit.
Which breaking curve should you select?
  • A. B-Curve
  • B. A-Curve
  • C. C-Curve
  • D. D-Curve
Answer: C
Explanation:
For an MCB (Miniature Circuit Breaker) in the PDU of an air-conditioning unit, a C-Curve is recommended.
C-Curve breakers are suitable for circuits with moderate inrush currents, such as those experienced in air conditioning units. They provide protection against overloads while accommodating the inrush without nuisance tripping.
Detailed Explanation:
C-Curve breakers trip when currents exceed 5 to 10 times the rated current, making them ideal for devices like air conditioners that experience moderate inrush currents upon startup. This characteristic provides a balance between protection and resilience against startup surges, preventing unnecessary trips while safeguarding the circuit.
EPI Data Center Specialist References:
EPI guidance for data center electrical systems specifies that C-Curve breakers are appropriate for equipment with inrush characteristics similar to air conditioning units, as they help prevent operational interruptions caused by typical surges during equipment start-up.

NEW QUESTION # 122
The noise levels in the data center are approximately 91 dB (A).
Do employers need to take precautions?
  • A. No, anything less than 100 dB (A) is acceptable.
  • B. There are no regulations regarding noise levels inside a building. Regulations only apply to noise pollution outside of the building.
  • C. As long as the data is compliant to ISO/IEC 27001 it is acceptable.
  • D. Yes, since it is mandated by regulations.
Answer: D
Explanation:
In a data center with noise levels of 91 dB (A), employers are indeed required to take precautions to protect personnel, as this level exceeds commonly accepted safety thresholds for occupational noise exposure. Regulations, such as those from the Occupational Safety and Health Administration (OSHA) or similar agencies, mandate specific controls and protections for environments with high noise levels.
Detailed Explanation:
Noise levels above 85 dB (A) typically trigger requirements for hearing conservation programs. At 91 dB (A), steps like providing ear protection, conducting regular noise assessments, and possibly implementing engineering controls to reduce noise should be taken. Extended exposure to such levels can lead to hearing loss, so regulatory compliance ensures both immediate and long-term protection for personnel.
EPI Data Center Specialist References:
EPI guidelines for data center safety address noise exposure as part of the environmental safety measures. EPI recommends adhering to local occupational health regulations, as excessive noise can harm personnel and affect operational efficiency due to potential health hazards.

NEW QUESTION # 123
You are working with a customer who requires a guarantee that THDi levels coming from the UPS should not exceed more than 3% THDi. Furthermore, he wants to run a power-efficient data center. The UPS has a 6-Pulse SCR/Thyristor based rectifier. The current load on the UPS is approximately 80%. The customer indicates they are not expecting any changes on the ICT infrastructure for the next 3 years.
What should you recommend?
  • A. Install an isolation transformer rated at K13 or K20
  • B. Install a passive harmonic filter on the UPS
  • C. Nothing, the UPS will be able to take care of the right levels of THDi
  • D. Install an active harmonic filter on the UPS
Answer: D
Explanation:
Given the customer's requirement to limit Total Harmonic Distortion (THDi) to below 3% and the presence of a 6-pulse SCR/Thyristor-based rectifier, an active harmonic filter is the best solution. A 6-pulse rectifier typically generates higher harmonic distortion, often exceeding 3%, especially under substantial loads like 80%. An active harmonic filter dynamically monitors and compensates for harmonic distortion, effectively reducing THDi and supporting a more power-efficient operation, aligning with the customer's energy efficiency goals.
Detailed Explanation:
Passive harmonic filters can reduce harmonics but are less effective at maintaining low THDi levels under varying loads. Active filters offer real-time correction and can achieve lower THDi levels than passive filters, especially in systems with fluctuating loads or where strict harmonic limits are required. Installing an active harmonic filter will ensure compliance with the specified THDi limits and optimize power quality.
EPI Data Center Specialist References:
EPI guidance on power quality management recommends active harmonic filters for environments where strict THDi levels are necessary. Active filters offer better control over harmonic levels, supporting both compliance and operational efficiency.

NEW QUESTION # 124
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?
  • A. At all times, the levels should allow for security cameras to function properly.
  • B. Security guards should perform regular inspections verifying the system works.
  • C. The system should not be based on motion detection as the lights might suddenly switch off while staff is still at work.
  • D. It is not advisable to use such a system since it will reduce the lifetime of LED lighting.
Answer: A

NEW QUESTION # 125
......
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