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One of the best ways to prepare for the EXIN CDCS exam is to study the EXIN EPI Certified Data Centre Specialist (CDCS) exam questions. Familiarizing yourself with the CDCS certification using practice test on real-world data sets can help you build your confidence and prepare you for the exam. Additionally, taking CDCS Exam Questions and quizzes can help you identify areas where you need to improve and gauge your understanding of the material.

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EXIN CDCS practice questions are based on recently released EXIN CDCS exam objectives. Includes a user-friendly interface allowing you to take the EXIN CDCS Practice Exam on your computers, like downloading the PDF, Web-Based EXIN CDCS practice test software, and Desktop EXIN CDCS practice exam software.

EXIN EPI Certified Data Centre Specialist Sample Questions (Q14-Q19):

NEW QUESTION # 14
Does hot/cold aisle containment impact PUE?

A. No, airflow has no impact on power
B. Yes, avoidance of mixing improves PUE
C. No, unless using virtualization
D. Yes, but not with cooling towers

Answer: B

Explanation:
Hot and cold aisle containment prevents mixing of supply and return air, which improves cooling efficiency.
By maintaining higher return-air temperatures, cooling units operate more efficiently, often allowing higher chilled water setpoints. This reduces overall cooling power consumption, directly improving PUE (Power Usage Effectiveness).
Containment is recognized by ASHRAE and Green Grid as one of the simplest and most cost-effective methods for lowering PUE. Options A, C, and D are false because containment benefits apply regardless of cooling source or IT virtualization.
References: ASHRAE TC 9.9 - Airflow Management, The Green Grid White Paper #42.

NEW QUESTION # 15
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 1,000 CFM
B. Approximately 1,500 CFM
C. Approximately 160 CFM
D. Approximately 500 CFM

Answer: A

Explanation:
To calculate the cooling airflow requirement for ICT equipment, you can use the formula:
CFM=Power (kW)×3160#T(°F) ext{CFM} = rac{ ext{Power (kW)} imes 3160}{Delta T ( ext{°F})} CFM=#T(°F)Power (kW)×3160 For equipment consuming 6 kW with a Delta-T of 20°F:
CFM=6×316020=948#1,000 CFM ext{CFM} = rac{6 imes 3160}{20} = 948 approx 1,000 , ext{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 # 16
A data center requires an audit to find out whether it conforms with ANSI/TIA-942 Rated-3 (concurrently maintainable).
Will the network architecture be part of this audit?

A. Yes, but only if the network administration does not comply with ANSI/TIA-606.
B. No, as concurrently maintainable only applies to electrical and mechanical (power and cooling).
C. No, only the type of cabling used will be audited.
D. Yes, amongst other aspects, the network architecture should be Rated-3 compliant with the requirements of ANSI/TIA-942.

Answer: D

Explanation:
For a Rated-3 data center, network architecture is indeed a key component of the audit under ANSI/TIA-942. This rating requires concurrent maintainability across all systems, including telecommunications infrastructure. The network architecture must therefore meet specific redundancy and reliability standards to ensure uninterrupted operations during maintenance or failure of any single component.
Detailed Explanation:
Rated-3 requirements extend beyond electrical and mechanical systems to include network architecture. This ensures that telecommunications systems are also designed for concurrent maintainability, thus contributing to overall uptime and resilience.
EPI Data Center Specialist References:
EPI endorses comprehensive assessments for Rated-3 facilities, emphasizing that network systems must meet standards for redundancy and concurrent maintainability, which align with ANSI/TIA-942's holistic approach to data center reliability.

NEW QUESTION # 17
An MCB needs to be installed in the PDU of an air-conditioner unit.
Which breaking curve should you select?

A. D-Curve
B. B-Curve
C. C-Curve
D. A-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 # 18
What is a potential disadvantage of using water mist as a fire extinguishing system?

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

Answer: C

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 # 19
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Valid EXIN CDCS Study Notes, Latest CDCS Exam Materials

EXIN Valid CDCS Study Notes - 100% Pass 2026 Realistic Latest CDCS Exam Materials

EXIN EPI Certified Data Centre Specialist Sample Questions (Q14-Q19):

Pass Guaranteed Quiz CDCS - EXIN EPI Certified Data Centre Specialist –Efficient Valid Study Notes

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