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[General] Test CDCS Prep | Valid CDCS Exam Forum

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【General】 Test CDCS Prep | Valid CDCS Exam Forum

Posted at yesterday 08:47      View：20 | Replies：0        Print      Only Author   [Copy Link] 1#
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EXIN CDCS Exam Syllabus Topics:
TopicDetails
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 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
  • 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 (Q82-Q87):NEW QUESTION # 82
What is the advantage of using Multi-fiber Push-On (MPO) connectors?
  • A. No advantage, cannot be used with OM4 fiber
  • B. Very flexible, can be used for both copper and optical fiber
  • C. Made of high-quality materials, reusable without risk
  • D. Allows a single connector with multiple fibers running parallel, enabling easy upgrade to 40-100 Gbit/s
Answer: D
Explanation:
MPO connectors are multi-fiber connectors that support 12, 24, or more fibers in a single connector. Their key advantage is enabling parallel optics-where multiple fibers transmit simultaneously. This makes them ideal for 40GBASE-SR4 and 100GBASE-SR10 Ethernet links.
* With OM4 or OM5 fiber, MPO cabling supports short-reach high-speed links in modern data centers.
* Option A is incorrect; MPO works with OM3/OM4/OM5.
* Option C is misleading; all connectors degrade with repeated use.
* Option D is false because MPO is optical-only.
The real advantage is parallel multi-fiber transmission in one connector, simplifying cabling for high-speed networking.
References: ANSI/TIA-568.3-D (Optical Fiber Cabling), IEEE 802.3ba (40/100GbE), ANSI/TIA-942-B §8.

NEW QUESTION # 83
What is the main disadvantage of using a ToR (Top of Rack) design?
  • A. There will be more switches to manage.
  • B. A single ToR (Top of Rack) switch is more expensive than an EoR (End of Row) switch.
  • C. A ToR (Top of Rack) switch has only optical interfaces.
  • D. You need a separate rack to install all your ToR (Top of Rack) switches.
Answer: A
Explanation:
A Top of Rack (ToR) design typically requires more switches because each rack has its own switch to manage network connections, as opposed to End of Row (EoR) or centralized designs, which consolidate switches. While ToR designs improve cabling efficiency and reduce latency, they also increase the number of switches, thus raising management complexity and potentially increasing capital and operational costs.
Detailed Explanation:
In a ToR setup, each rack's individual switch allows for quick access and streamlined cabling within the rack. However, this setup means more devices to configure, monitor, and maintain, which can increase administrative overhead and network management complexity.
EPI Data Center Specialist References:
EPI documentation notes that ToR designs can improve performance but also lead to increased management needs due to the higher switch count, making them less ideal in environments where simplified network management is prioritized.

NEW QUESTION # 84
An MCB needs to be installed in the PDU of an ICT rack. Which breaking curve should you select?
  • A. D-Curve
  • B. A-Curve
  • C. B-Curve
  • D. C-Curve
Answer: D
Explanation:
MCBs (Miniature Circuit Breakers) are characterized by their tripping curves:
* B-Curve: Trips at 3-5 × rated current; suitable for resistive loads.
* C-Curve: Trips at 5-10 × rated current; suitable for mixed loads including ICT equipment with moderate inrush current.
* D-Curve: Trips at 10-20 × rated current; used for heavy inductive loads like motors.
* A-Curve: Very sensitive, rarely used outside specialty electronics.
Since ICT equipment like servers and network devices have moderate inrush currents (from power supplies), the recommended breaker is C-Curve. It balances protection against nuisance tripping while still ensuring fault clearance.
References: IEC 60898-1 (Circuit Breakers for Overcurrent Protection), IEC 60947-2 (LV Breakers), EXIN DCS study material: Electrical Distribution.

NEW QUESTION # 85
A data center requires an audit for ANSI/TIA-942 Rated-3 compliance. Will the network architecture be part of this audit?
  • A. Yes, but only if network administration does not comply with ANSI/TIA-606
  • B. No, only the type of cabling used will be audited
  • C. No, as concurrent maintainability only applies to electrical and mechanical
  • D. Yes, amongst other aspects the network architecture should be Rated-3 compliant with ANSI/TIA-942
Answer: D
Explanation:
ANSI/TIA-942 defines ratings across four areas:
* Architectural
* Electrical
* Mechanical
* Telecommunications (network cabling + architecture)
A data center cannot be considered Rated-3 unless all four areas meet the concurrent maintainability criteria.
For telecom/networking, this means dual redundant backbone cabling, proper pathways, and separate routes to ensure no single point of failure.
* A and B are incorrect because they limit scope to electrical/mechanical or cabling only.
* C is incomplete: administration (ANSI/TIA-606) is part of compliance but architecture redundancy is mandatory.
References: ANSI/TIA-942-B §5.2 (Rated Levels), Annex E (Telecommunications infrastructure examples).

NEW QUESTION # 86
Maximum exposed area of fire-rated glass is 2 m², but the window is 5 m². What is the best option?
  • A. Split into two equal parts with aluminum frame
  • B. Split into smaller parts within 2 m² using fire-rated frames
  • C. Replace with normal glass
  • D. Split into two equal parts with silicone
Answer: B
Explanation:
Fire-rated glass must be installed within manufacturer's tested maximum exposed area. Oversized panes risk failure under fire conditions. If the window exceeds 2 m², the correct approach is to subdivide it into smaller sections, each #2 m², using approved fire-rated frames.
Options B and C (silicone or aluminum splits) are not certified fire-rated framing methods. Option A is unsafe because normal glass provides no fire protection.
Therefore, option D ensures compliance and safety.
References: EN 1363-1 (Fire Resistance Tests), NFPA 80 (Fire Doors & Windows).

NEW QUESTION # 87
......
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