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EXIN CDCS Exam Syllabus Topics:

Topic	Details
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 (Q66-Q71):

NEW QUESTION # 66
Which standard defines the requirements for network administration?

A. ANSI/TIA-606
B. ANSI/TIA-568
C. ISO/IEC 30129
D. ASHRAE

Answer: A

Explanation:
Network administration in structured cabling is governed by ANSI/TIA-606-B, which defines requirements for cable and asset administration, labeling, documentation, and record-keeping. It specifies how pathways, spaces, and cabling should be identified and labeled to ensure proper lifecycle management.
* ANSI/TIA-568 covers cabling performance standards, not administration.
* ISO/IEC 30129 relates to data center facilities and infrastructure but not cable management.
* ASHRAE focuses on thermal management, not cabling.
Proper administration is critical in data centers because high cable density can lead to operational issues, troubleshooting delays, and risk of downtime if poorly managed. By enforcing labeling schemes, color codes, and database-driven records, ANSI/TIA-606 supports operational excellence and compliance with ANSI/TIA-
942.
References: ANSI/TIA-606-B (Administration Standard for Telecommunications Infrastructure), ANSI/TIA-
942-B §8.6.

NEW QUESTION # 67
Smoke sensors must be installed in the computer room. What is the minimum density?

A. 1 per 10 m²
B. 1 per 25 m²
C. 1 per 5 m²
D. 1 per 40 m²

Answer: B

Explanation:
NFPA 75 (Standard for IT Equipment Protection) and NFPA 72 (Fire Alarm Code) recommend installing at least one smoke detector per 250 ft² (#25 m²) in IT rooms. This ensures early detection in high-value environments.
* A and B are far too dense, exceeding NFPA minimums.
* D is too sparse and would not meet early detection requirements.
Therefore, the correct standard density is 1 per 25 m².
References: NFPA 75 §5.4.3, NFPA 72 Table 17.6.3.5.1.

NEW QUESTION # 68
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 160 CFM
C. Approximately 1,500 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 # 69
What is the advantage of OM5 multimode fiber cabling?

A. No advantage-same as OM4
B. 100 Gbit/s link for 500 m reach
C. Designed for cheaper LED transmitters
D. Supports SWDM, requiring fewer fibers

Answer: D

Explanation:
OM5 is optimized for Short Wavelength Division Multiplexing (SWDM) between 850-953 nm. This allows transmission of multiple wavelengths over a single fiber pair, reducing the number of fibers required for high- speed links.
* OM4 already supports 100 GbE to 150 m, but OM5 with SWDM extends reach and reduces cabling bulk.
* Option B is false because OM5 offers distinct SWDM benefits.
* Option C is incorrect-OM5 is laser-optimized, not LED-based.
* Option D is misleading; OM5 doesn't extend 100 GbE to 500 m (that requires single-mode OS2 fiber).
Thus, the key advantage is SWDM support.
References: ANSI/TIA-568.3-D, ISO/IEC 11801-1, IEEE 802.3cm (400G over MMF).

NEW QUESTION # 70
You want to make cooling more effective by setting cold aisle temperature to 4 °C (39 °F). Is this acceptable?

A. No, 4 °C (39 °F) is below the allowable ASHRAE range
B. Yes, but only if cooling systems can maintain this continuously
C. Yes, as long as dewpoint doesn't go below -9 °C (16 °F)
D. No, intake air must be exactly 20 °C (68 °F)

Answer: A

Explanation:
According to ASHRAE TC 9.9 Thermal Guidelines (2016), the recommended intake temperature range for Class A1 ICT equipment is 18-27 °C (64-81 °F). The allowable lower limit is 15 °C (59 °F). Setting supply to 4 °C (39 °F) falls far below these limits.
Operating at such low temperatures would:
* Cause condensation risk when surfaces drop below dew point.
* Create severe energy inefficiency, as chillers would run at extremely low setpoints.
* Possibly damage hardware due to thermal shock.
Options A and B are misleading-system capability or dew point alone does not override ASHRAE guidelines. Option D is incorrect since 20 °C is a common design target, not a requirement.
Thus, supplying 4 °C is not acceptable.
References: ASHRAE TC 9.9 "Thermal Guidelines for Data Processing Environments," ANSI/TIA-942-B §6.
5.

NEW QUESTION # 71
......

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CDCS Exam Quizzes, CDCS Exam Simulator Fee

EXIN CDCS Exam Syllabus Topics:

Top CDCS Exam Quizzes 100% Pass | Professional CDCS Exam Simulator Fee: EXIN EPI Certified Data Centre Specialist

EXIN EPI Certified Data Centre Specialist Sample Questions (Q66-Q71):

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