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CDCS Pdf Files & Exam CDCS Reference

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EXIN CDCS Exam Syllabus Topics:

Topic
Details

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.

EXIN EPI Certified Data Centre Specialist Sample Questions (Q114-Q119):

NEW QUESTION # 114
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. No, only the type of cabling used will be audited.
B. No, as concurrently maintainable only applies to electrical and mechanical (power and cooling).
C. Yes, amongst other aspects, the network architecture should be Rated-3 compliant with the requirements of ANSI/TIA-942.
D. Yes, but only if the network administration does not comply with ANSI/TIA-606.

Answer: C

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 # 115
You are installing new copper cabling.
What is the advantage or disadvantage of choosing pre-terminated category 6 or 6A cabling?

A. There is no advantage as most new copper cabling network designs are based on category 3 or 5E for horizontal cabling.
B. Pre-terminated cabling makes ordering of the copper cables more complex, as you need to know in advance on which side the male or female connector needs to be located.
C. Pre-terminated cabling is already factory tested and saves installation time.
D. Pre-terminated cabling has a higher fire rating.

Answer: C

Explanation:
Choosing pre-terminated category 6 or 6A cabling provides several advantages, primarily related to time savings and reliability. Since pre-terminated cables are factory tested, they ensure consistent quality and performance, reducing the need for additional testing during installation. This makes installation faster and more efficient, which can significantly reduce labor costs and deployment times.
Detailed Explanation:
Pre-terminated cabling systems are manufactured and tested in controlled environments, which ensures they meet industry standards for performance. This factory testing process minimizes the likelihood of faults, reducing the need for troubleshooting and retesting on-site. Moreover, pre-terminated solutions can help to streamline installations because they eliminate the need for on-site terminations, which can be time-consuming and require skilled labor.
This is especially beneficial for data centers, where rapid deployment and minimizing potential points of failure are critical to maintaining uptime. However, it is important to note that pre-terminated cables require accurate planning, as lengths and connector configurations must be predetermined.
EPI Data Center Specialist References:
According to EPI Data Center Specialist guidelines, pre-terminated cabling is advantageous in data center environments due to reduced installation time and enhanced reliability from factory testing. These attributes align with best practices for efficient data center management, where maintaining performance and minimizing downtime are priorities.

NEW QUESTION # 116
The logical overview of the data center looks as pictured below. To what TIA-942 Rating is this design made based on electrical only?

A. Rating-4
B. Rating-3
C. Rating-1
D. Rating-2

Answer: A

Explanation:
The diagram shows two independent utility feeds, each backed up by generators, connected to two separate distribution paths. Each path supplies its own UPS system in an N+1 configuration, which then feeds PDUs and ICT loads. Mechanical equipment also has dual redundant feeds. This means the electrical design ensures concurrent maintainability (systems can be maintained without downtime) and fault tolerance (a single fault anywhere in the power path will not impact ICT load).
According to ANSI/TIA-942-B, the electrical infrastructure for a Rated-4 data center must have two active distribution paths, each independently capable of supporting the ICT load. It also requires full redundancy (N+1 or greater) on critical components such as UPS and generators. This diagram clearly illustrates that architecture: dual feeds, dual UPS, and fault tolerance.
In contrast, Rating-3 offers concurrent maintainability but does not guarantee full fault tolerance. Rating-2 and Rating-1 are less stringent and would not provide the dual power distribution seen here.
References: ANSI/TIA-942-B §6.2 (Electrical Infrastructure Requirements), Figure 21 (example of dual active distribution).

NEW QUESTION # 117
Can you install a raised floor tight to the perimeter of the room?

A. Yes, but only if the data center is located in Zone 0 with no or little seismic activity
B. Yes, a raised floor needs to be installed tight to the perimeter to prevent air leakage
C. No, to avoid damage to the raised floor due to building and hygrothermal movement
D. No, but this applies only to raised floors with a height of over 90 cm (3 ft)

Answer: C

Explanation:
Raised floors must not be installed flush against perimeter walls. Buildings expand, contract, and shift due to thermal expansion (hygrothermal movement), structural settlement, and seismic activity. If the raised floor is rigidly connected to the walls, this movement transfers directly into the raised floor grid, causing buckling, cracking, or tile misalignment.
Industry standards (e.g., CISCA - Ceilings & Interior Systems Construction Association guidelines) require leaving a small perimeter gap (typically 1-2 cm) between raised floor tiles and walls. This gap is then sealed with flexible firestops or brush gaskets to control air leakage while preserving movement tolerance.
Therefore, the correct practice is to leave a separation space, making answer C correct. Options A and D restrict this requirement incorrectly, while B is factually wrong (sealing against the perimeter is not allowed).
References: CISCA Raised Floor Installation Guidelines, ANSI/TIA-942-B §6.3 (Flooring and Seismic Considerations).

NEW QUESTION # 118
A data center has its own power supply from the public utility and receives chilled water supply from the building owner.
What needs to be taken into consideration when calculating the PUE?

A. You will need to take the value for COP of the chiller plant into consideration
B. Nothing, as the chiller plant in the building also uses electrical power
C. PUE calculations are not possible in shared buildings
D. You will need to take a weight factor of 0.4 for district chilled water into consideration

Answer: D

Explanation:
When calculating Power Usage Effectiveness (PUE) in a data center that uses chilled water from an external source, like from a building owner, a weight factor for district chilled water must be applied. This is because PUE calculations aim to measure the energy efficiency of the data center's own operations, and external utilities like district chilled water aren't directly powered by the data center. A weight factor of 0.4 is typically used to account for the energy consumed to produce and deliver the chilled water, reflecting the indirect impact on the data center's total energy consumption.
Detailed Explanation:
PUE is calculated as the ratio of the total facility energy to the IT equipment energy. If the cooling is provided by an external chilled water source, it's necessary to adjust the calculations to accurately reflect the energy impact. By incorporating the 0.4 weight factor, data centers can calculate a more accurate PUE, aligning with standard methods and industry best practices.
EPI Data Center Specialist References:
EPI training on PUE highlights the importance of adjusting for external energy sources, such as district cooling, in the calculations. This ensures that PUE values remain accurate and comparable across different data centers, even when external utilities are used.

NEW QUESTION # 119
......

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