真実的なCDCS学習体験談と100％合格CDCS関連資料

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EXIN CDCS 認定試験の出題範囲：

トピック	出題範囲
トピック 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.
トピック 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.
トピック 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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CDCS関連資料 & CDCS試験復習

試験準備のための学習資料を見つけている場合、当社の資料は検索を終了します。私たちのCDCS試験トレントは、あなたが期待できない高品質を持っています。 CDCS試験トレントは時間を大幅に節約するのに役立ち、あなたがやりたいことをする自由時間が増えると思います。私たちのCDCSテスト問題集の使用について後悔がないことを保証できます。アクションの時間が来たら、思考を止めて、入って、私たちのCDCS試験トレントを試してください。CDCS試験に合格し、短時間で証明書を取得する必要があります。

EXIN EPI Certified Data Centre Specialist 認定 CDCS 試験問題 (Q23-Q28):

質問 # 23
When shielding material reaches its saturation point, what will be the impact?

A. The shielding material will increase its permeability factor.
B. The shielding material will reach its optimal shielding performance state.
C. The shielding material will no longer be able to attenuate (reduce) additional EMF.
D. The shielding material will reach its maximum electrically charged state.

正解：C

解説：
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.

質問 # 24
The UPS of a data center, with an ANSI/TIA-942 Rating-4, is installed with the rectifier connected to power feed A and the bypass/reserve line input connected to power feed B.
To which feed will the output of the UPS be synchronized?

A. Feed B
B. Depends on the setting of the UPS, as the UPS can normally be set to either feed
C. The UPS will not synchronize to any of the feeds but use an internal clock to set the output voltage and frequency
D. Feed A

正解：B

解説：
For a UPS system in a Rating-4 data center, the synchronization of output can indeed depend on the specific settings of the UPS. Generally, such systems allow for flexible configuration where the output can be synchronized to either power feed A or B, depending on which feed is preferred for stability or redundancy purposes.
Detailed Explanation:
In dual-feed setups, such as those in high-redundancy data centers, the UPS can be set to synchronize with either feed. This ensures that the UPS maintains continuity in case one feed becomes unstable or fails. The flexibility to choose synchronization to either feed enhances the resiliency and reliability of power supply, which is critical in Tier IV (Rating-4) facilities where uptime is paramount.
EPI Data Center Specialist References:
The EPI Data Center Specialist course underscores the importance of configurable UPS systems in Rating-4 data centers, where redundancy and continuous power are critical. By allowing synchronization to either feed, the UPS can maintain the highest level of reliability, which aligns with the rigorous standards expected in such environments.

質問 # 25
What is the main reason to install Earth Leakage protection?

A. Protection against lightning strikes
B. Protection of human lives
C. Protection of ICT equipment against high-frequency noise currents
D. Improvement of the data center grounding/earthing system

正解：B

解説：
Earth Leakage Protection is primarily installed to protect human lives by detecting and disconnecting power when a fault current flows to the ground. This type of protection is essential to avoid electrical shock hazards that could occur when insulation fails, or equipment is improperly grounded.
Detailed Explanation:
Earth leakage currents can occur due to insulation faults or accidental contact with live parts. Earth Leakage Protection systems, such as Residual Current Devices (RCDs), quickly detect these faults and disconnect the circuit to prevent harm to personnel. This is especially crucial in environments like data centers where high-powered equipment is continuously running and any electrical fault can pose significant safety risks.
EPI Data Center Specialist References:
EPI emphasizes that human safety is paramount in data center operations. Proper grounding and leakage protection are fundamental safety measures, and EPI guidelines align with this focus, underscoring the importance of protecting personnel from electrical hazards through appropriate safety systems.

質問 # 26
The computer room has high levels of H2S gas contamination. What is the best option to resolve this issue?

A. Clean the room and racks with a damp/wet cloth.
B. Vacuum the whole room using a HEPA/S-Class-based filter.
C. Install air-scrubbers.
D. Provide more air changes per hour by adding more fresh air to the computer room.

正解：C

解説：
High levels of H2S (hydrogen sulfide) gas contamination in a computer room are best addressed by installing air-scrubbers. Air-scrubbers can effectively filter out contaminants, including corrosive gases like H2S, ensuring clean air circulation and protecting sensitive IT equipment from potential corrosion and damage.
Detailed Explanation:
Air-scrubbers are designed to remove various airborne contaminants and are particularly useful in environments where corrosive gases are present. These systems use filters or chemical reactions to neutralize harmful substances, making them ideal for data centers that need to maintain high air quality for equipment reliability.
EPI Data Center Specialist References:
EPI guidelines suggest air-scrubbing technologies to remove contaminants that pose risks to electronic equipment, maintaining air quality and reducing corrosion risk.

質問 # 27
A computer room with a raised floor has been designed with racks in a hot/cold aisle setup.
What should you recommend for the placement of down-flow air conditioners?

A. Air conditioners perpendicular to (at the end of the row of) the Hot-Aisle
B. Air conditioners should always be placed at both sides of each row of racks
C. Air conditioner placement has no influence on cooling effectiveness and efficiency. Hence, they can be placed at any convenient location.
D. Air conditioners perpendicular to (at the end of the row of) the Cold-Aisle

正解：D

解説：
In a hot/cold aisle configuration, placing down-flow air conditioners perpendicular to the cold aisle ensures that cool air is directed efficiently into the cold aisles where server intakes are located. This layout allows for optimal cooling performance by aligning the airflow directly with the equipment intakes, minimizing hot spots and enhancing cooling efficiency.
Detailed Explanation:
With a raised floor design, cold air from the air conditioners is supplied into the cold aisle, where server intakes are located. Positioning the air conditioning units perpendicular to the cold aisles ensures that cool air is delivered directly into these aisles, preventing air mixing and optimizing cooling. This setup takes full advantage of the airflow management strategy inherent to the hot/cold aisle configuration.
EPI Data Center Specialist References:
EPI guidelines on cooling emphasize that down-flow air conditioners should be positioned to maximize the effectiveness of cold aisle delivery, which improves cooling efficiency and helps maintain consistent temperatures across server racks.

質問 # 28
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真実的なCDCS学習体験談と100％合格CDCS関連資料

EXIN CDCS 認定試験の出題範囲：

CDCS関連資料 & CDCS試験復習

EXIN EPI Certified Data Centre Specialist 認定 CDCS 試験問題 (Q23-Q28):

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