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EXIN CDCS Exam Syllabus Topics:

Topic	Details
Topic 1	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 2	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 3	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.

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EXIN EPI Certified Data Centre Specialist Sample Questions (Q83-Q88):

NEW QUESTION # 83
Does hot/cold aisle containment impact PUE?

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

Answer: A

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 # 84
ICT rack consumes 3 kW with #T ~11 °C (20 °F). Calculate required airflow (CFM).

A. ~500 CFM
B. ~160 CFM
C. ~1,500 CFM
D. ~1,000 CFM

Answer: A

Explanation:
Cooling airflow (CFM) can be calculated from:
Where P = IT load.
So approximately 500 CFM is required.
* 1,500 and 1,000 CFM are too high.
* 160 CFM is far too low.
Therefore, the correct answer is ~500 CFM.
References: ASHRAE TC 9.9 (Cooling Calculations), ANSI/TIA-942-B §6.5.

NEW QUESTION # 85
What is the advantage or disadvantage of using MPO (Multi-fiber Push On)/pre-terminated fiber?

A. It is a very flexible system as it can be used for both copper cables and optical fiber cables.
B. There is no advantage, as it creates additional heat load in the data center.
C. There is no advantage, as it cannot be used with OM4 optical fiber cables.
D. It speeds up installation and provides an easy upgrade to transmission speeds up to 40 Gbit/s -100 Gbit/s.

Answer: D

Explanation:
MPO (Multi-fiber Push On) pre-terminated fiber offers the advantage of quick installation and supports high-speed upgrades up to 40 Gbit/s and 100 Gbit/s. This technology simplifies connections by allowing multiple fibers to be connected in a single plug-and-play module, reducing installation time and making future expansions or upgrades to higher speeds easier.
Detailed Explanation:
MPO connectors consolidate multiple fiber connections into a single interface, which simplifies cable management and reduces installation complexity. This setup is particularly beneficial in data centers where high-speed networks are essential, and where rapid deployment is necessary. MPO pre-terminated fiber also supports the use of OM4 fiber, making it compatible with existing high-performance cabling infrastructure.
EPI Data Center Specialist References:
EPI training highlights that pre-terminated fiber solutions, like MPO, can greatly enhance efficiency in data centers. By reducing installation time and providing scalability for higher transmission speeds, they align with best practices for maintaining flexible and future-ready network infrastructure.

NEW QUESTION # 86
What mainly affects the cooling capacity of a raised floor tile?

A. Type of ICT equipment, location of the air conditioner, pressure under the raised floor, allowable temperature in the hot aisle
B. Percentage of the surface opening, airflow direction of the ICT equipment, temperature difference between the air intake and air exhaust of the ICT equipment, construction material of the tile
C. Relative humidity in the computer room, temperature of the cold air, pressure under the raised floor, construction material of the tile
D. Percentage of the surface opening, obstruction of the supporting construction, pressure under the raised floor, damper construction

Answer: D

Explanation:
The cooling capacity of a raised floor tile is primarily influenced by the percentage of surface opening, the obstruction caused by the supporting construction, the pressure under the raised floor, and the damper construction. These factors dictate how much airflow can pass through the tile and how effectively cool air is distributed to the equipment in the data center.
Detailed Explanation:
The percentage of surface opening on a floor tile affects how much air can flow through, with larger openings allowing more airflow. Supporting structures beneath the floor can obstruct airflow, reducing cooling efficiency. Pressure under the raised floor impacts the velocity and volume of air that moves through the tile.
Additionally, if dampers are installed, they control the airflow rate, which can be adjusted to meet specific cooling needs for the area.
EPI Data Center Specialist References:
EPI guidance on airflow management under raised floors emphasizes these factors as critical for effective cooling, especially in high-density areas. Ensuring unobstructed and adequate airflow helps maintain consistent cooling across equipment.

NEW QUESTION # 87
What is the minimum requirement for power feeds to a Rated-4 data center (ANSI/TIA-942)?

A. One feed split into two distribution boards
B. Two feeds from one substation
C. Two feeds from two different substations, one power company acceptable
D. Two feeds from two different substations, one power company not acceptable

Answer: C

Explanation:
A Rated-4 facility requires dual active utility feeds, each from an independent substation, but they may come from the same utility provider if substations are geographically separate and independent.
* Option A is too strict; ANSI/TIA-942 does not mandate two different companies.
* Options C and D do not provide true independence and would fail Rated-4 requirements.
Thus, the minimum is two substations, possibly same provider.
References: ANSI/TIA-942-B §6.2 (Utility Service Requirements).

NEW QUESTION # 88
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Latest EXIN CDCS Test Notes | Cost Effective CDCS Dumps

EXIN CDCS Exam Syllabus Topics:

Cost Effective CDCS Dumps - Discount CDCS Code

EXIN EPI Certified Data Centre Specialist Sample Questions (Q83-Q88):

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