CDCS EXAM MATERIAL - PASS GUARANTEED QUIZ CDCS - EXIN EPI CERTIFIED DATA CENTRE SPECIALIST FIRST-GRADE NEW BRAINDUMPS EBOOK

CDCS Exam Material - Pass Guaranteed Quiz CDCS - EXIN EPI Certified Data Centre Specialist First-grade New Braindumps Ebook

CDCS Exam Material - Pass Guaranteed Quiz CDCS - EXIN EPI Certified Data Centre Specialist First-grade New Braindumps Ebook

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EXIN CDCS Exam Syllabus Topics:

TopicDetails
Topic 1
  • 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 2
  • 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 3
  • 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.

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EXIN EPI Certified Data Centre Specialist Sample Questions (Q22-Q27):

NEW QUESTION # 22
What should be considered when installing overhead data cabling?

  • A. To maintain minimum separation from power and ensure that the fire detection and suppression systems are not hindered.
  • B. Copper data cabling should not be placed in metal cable trays.
  • C. All cabling should make sharp bends directly into the rack to avoid usage of additional space and blocking the airflow on top of the rack.
  • D. Optical fiber cabling should always be positioned on top of the copper cabling in the same cable tray to avoid damage to the sensitive optical fiber.

Answer: A

Explanation:
When installing overhead data cabling, it's crucial to maintain minimum separation from power cables to prevent electromagnetic interference. Additionally, cabling should be arranged so that it does not obstruct fire detection and suppression systems, allowing for proper sensor function and suppression agent dispersion in the event of a fire.
Detailed Explanation:
Separation between power and data cabling minimizes the risk of interference and helps ensure compliance with standards for signal integrity. Proper placement relative to fire suppression systems ensures that any smoke or heat can be effectively detected, and suppression agents can be evenly distributed without obstruction from cabling.
EPI Data Center Specialist References:
EPI guidelines emphasize maintaining adequate separation between power and data cables for safety and performance and ensuring cabling does not interfere with essential safety systems in data centers.


NEW QUESTION # 23
What is a significant difference between a halocarbon gas-based fire suppression system and an inert gas-based fire suppression system?

  • A. Inert gas has smaller-sized gas containers than halocarbon gas.
  • B. Halocarbon gas works on the basis of heat removal and inert gas works on the basis of oxygen reduction.
  • C. Halocarbon gas works on the basis of oxygen reduction and inert gas works on the basis of heat removal.
  • D. Inert gas harms the environment and halocarbon gas does not.

Answer: B

Explanation:
A halocarbon gas-based fire suppression system primarily extinguishes fires through heat absorption. In contrast, an inert gas-based system works by reducing oxygen levels to a point where combustion cannot be sustained. Halocarbon agents, like FM-200, absorb heat from the fire, cooling it down, whereas inert gases, like nitrogen or argon, lower oxygen concentration.
Detailed Explanation:
Halocarbons are effective in quickly cooling flames and are suitable for electronic environments due to their fast action. Inert gases displace oxygen to suppress fires, making them ideal in occupied spaces where human safety can be managed during a fire event due to slower discharge times.
EPI Data Center Specialist References:
EPI training distinguishes between these suppression mechanisms, noting the importance of selecting the correct system based on specific needs like quick response versus oxygen displacement for environments with sensitive equipment.


NEW QUESTION # 24
What is a potential disadvantage of using water mist as a fire extinguishing system?

  • A. It has droplets that are too small (100-120 microns) so it can only be used for small fires
  • B. It will rapidly increase the humidity level in the data center, which can cause a potential risk for the operation of the equipment
  • C. It extracts oxygen from the air creating a potential risk for humans inside the computer room
  • D. It only uses 10% of the water normally used in a water-based fire suppression, which might not be enough to suppress the fire

Answer: B

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 # 25
You are allowed to use a calculator for this question. The total power consumption of the ICT equipment in a rack is 6 kW. The equipment is traditional ICT equipment with a Delta-T of approximately 11 °C / 20 °F. Calculate the approximate CFM required to cool the equipment in the rack.

  • A. Approximately 1,500 CFM
  • B. Approximately 500 CFM
  • C. Approximately 160 CFM
  • D. Approximately 1,000 CFM

Answer: D

Explanation:
To calculate the cooling airflow requirement for ICT equipment, you can use the formula:
CFM=Power (kW)×3160ΔT(°F)text{CFM} = frac{text{Power (kW)} times 3160}{Delta T (text{°F})}CFM=ΔT(°F)Power (kW)×3160​ For equipment consuming 6 kW with a Delta-T of 20°F:
CFM=6×316020=948≈1,000 CFMtext{CFM} = frac{6 times 3160}{20} = 948 approx 1,000 , text{CFM}CFM=206×3160​=948≈1,000CFM Detailed Explanation:
This formula provides an estimate of the cubic feet per minute (CFM) of air required to cool the equipment based on its power consumption and the temperature difference (Delta-T) between intake and exhaust. The Delta-T represents the cooling effectiveness of the airflow.
EPI Data Center Specialist References:
EPI recommends using this calculation for determining airflow requirements in data centers, ensuring that cooling systems are adequately sized to maintain equipment within safe temperature limits.


NEW QUESTION # 26
A 5kW (power consumption) server keeps crashing with the message 'temperature too high'.
The intake temperature is measured at 25 °C/77 °F and a relative humidity (RH) level of 50%.
The exhaust temperature is 29 °C/84 °F and 45% RH.
The raised floor is providing an adequate amount of CFM/CMH at a reasonable velocity.
The pressure under the raised floor is approximately 25 Pa/0.1 inch H₂O.
Analyze the situation and indicate what the most likely cause is for this server to crash.

  • A. The exhaust temperature is exceeding the ASHRAE recommended values
  • B. The raised floor pressure is too low and/or the raised floor tile % opening is not adequate
  • C. No cause could be determined as the CFM/CMH of the air conditioning equipment is not stated
  • D. Dust inside the server causing issues with convection-based heat transfer

Answer: D

Explanation:
The server's repeated overheating despite adequate intake and exhaust temperatures suggests that dust buildup inside the server may be impeding heat transfer. Dust accumulation can obstruct airflow within the server, insulate components, and disrupt the convection-based cooling systems that regulate internal temperatures, leading to overheating and potential hardware failures.
Detailed Explanation:
While the intake and exhaust temperatures appear within acceptable ranges, internal dust can reduce airflow and impede cooling efficiency, causing internal components to overheat despite seemingly normal ambient conditions. Regular cleaning and maintenance are critical for preventing dust-related issues, especially in high-powered equipment like a 5kW server.
EPI Data Center Specialist References:
EPI emphasizes regular maintenance to prevent dust buildup in data center equipment. Dust can significantly impact cooling efficiency and lead to overheating, which underlines the importance of routine cleaning for optimal server performance.


NEW QUESTION # 27
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