最優質的CDCP考試 & EXIN CDCP證照信息：Certified Data Centre Professional (CDCP)通過認證

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EXIN CDCP 考試大綱：

主題	簡介
主題 1	Designing a Scalable Network Infrastructure: It covers ANSI TIA-942 cabling hierarchy, network redundancy, structured Cabling System, and planning considerations.
主題 2	Power Infrastructure: It focuses ATS and STS systems, redundancy levels and techniques, static and dynamic UPS systems, battery types, thermo-graphics, and renewable energy factor (REF).
主題 3	Water Supply: This topic is all about water supply techniques and application areas.
主題 4	Physical Security and Safety: Sub-topics are about physical security considerations and physical safety considerations.
主題 5	Data Centre Location, Building and Construction: It focuses on appropriate sites and components of an effective data centre and supporting facilities setup.
主題 6	Fire Safety Protection: This topic gives an understanding of standards for fire suppression, detection systems, total flooding fire suppression techniques, and handheld extinguishers. Additionally, it covers Signage and safety.

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最新的 EPI Data Centre CDCP 免費考試真題 (Q59-Q64):

問題 #59
When dealing with glass door racks, cool air is injected into the rack from:

A. The front door in a downflow direction.
B. The rear door in a downflow direction.
C. The top of the rack through the fans and vents mounted inside the rack.
D. The bottom of the rack.

答案：B

解題說明：
Glass door racks are a type of rack that have solid glass front doors and rear door heat exchangers (RDHx).
RDHx are devices that use facility coolant to absorb heat from the exhaust air of the IT equipment and return cool air to the room. RDHx can be either passive or active, depending on the fan configuration. In general, IT hardware within the rack is air-cooled and the door heat exchanger uses facility coolant to absorb heat from exhaust air to return air to the facility at or near inlet air temperature to the rack. This rear door heat exchanger can either be a passive or active solution. When dealing with glass door racks, cool air is injected into the rack from the rear door in a downflow direction. This means that the cool air flows from the top to the bottom of the rack, following the natural convection of the hot air rising. This way, the cool air can reach all the IT equipment in the rack and prevent hot spots or overheating.
References: [SOLVED] Rack - Solid or Mesh front door? - Data Center IT](https://community.spiceworks.
com/topic/510677-rack-solid-or-mesh-front-door), ChilledDoor, Rear Door Heat Exchanger | Data Center Cooling, ACS Door Heat Exchanger Requirements for Open Rack.

問題 #60
What is the purpose of a service corridor?

A. It is a generic name for pathways leading to other rooms that contains facility supporting equipment like the UPS room, battery room, generator room etc.
B. To create a secure and conditioned environment where media can be stored in a controlled manner.
C. It provides a safe, vented and secure area where standby generators can operate safely.
D. It provides a secure area where supporting facilities can be serviced and monitored on a 24x7 basis without disturbing the computer room.

答案：D

解題說明：
A service corridor is a dedicated space within or adjacent to a data centre that allows access to the supporting facilities, such as power, cooling, fire suppression, security, and cabling systems, without interfering with the computer room operations. A service corridor helps to isolate the noise, vibration, heat, and dust generated by the supporting facilities from the sensitive equipment in the computer room. A service corridor also enhances the safety and efficiency of the maintenance and monitoring activities, as well as the flexibility and scalability of the data centre design.
References: EPI Data Centre Training Framework, CDCP Preparation Guide, Service Corridors Definition | Law Insider

問題 #61
What is a disadvantage of a Dynamic UPS?

A. It needs a separate back-up generator as their autonomy time is less than 60 seconds.
B. They are only available for small to medium sized data centres, due to their limited capacity of 200 kVA
C. It needs additional cooling infrastructure as high temperatures reduces the lifetime of a Dynamic UPS.
D. They are heavy and more noisy.

答案：D

問題 #62
What is the recommended location for the Isolation Transformer in relation to the ICT-Equipment location?

A. The isolation transformer should be installed within the rack in which the ICT equipment has been installed.
B. The isolation transformer should be as close as possible to the ICT equipment but taking into account potential EMF.
C. The isolation transformer has to be installed within the power entry point of the building due to electrical code (regulation) requirements.
D. The isolation transformer should be as far away as possible to the ICT equipment to avoid potential EMF.

答案：B

解題說明：
According to the EPI Data Centre Training Framework, an isolation transformer is a device that transfers electrical power from one circuit to another without changing the voltage or frequency, but providing galvanic isolation1. Galvanic isolation means that there is no direct electrical connection between the input and output circuits, which can prevent ground loops, reduce noise, and improve safety2. An isolation transformer can also provide voltage stepdown or stepup, create a local ground-bonded neutral, reduce harmonic currents, and provide taps for abnormal mains voltage3.
The location of the isolation transformer in relation to the ICT equipment depends on the purpose and design of the transformer. In general, the isolation transformer should be as close as possible to the ICT equipment, but taking into account potential EMF4. EMF is a form of electromagnetic interference (EMI) that can affect the performance and reliability of the ICT equipment5. The closer the isolation transformer is to the ICT equipment, the shorter the cable length and the lower the voltage drop and power loss4. However, the isolation transformer should also be far enough from the ICT equipment to avoid EMF, which can be reduced by using proper shielding, grounding, and spacing5.
The isolation transformer should not be installed as far away as possible to the ICT equipment, as option B suggests, because this would increase the cable length and the voltage drop and power loss4. The isolation transformer does not have to be installed within the power entry point of the building, as option C suggests, because this is not a requirement of the electrical code or regulation, and it may not be optimal for the data centre power system. The isolation transformer should not be installed within the rack in which the ICT equipment has been installed, as option D suggests, because this would increase the heat load and the noise level in the rack, and it may not fit in the rack space.
References: 1: EPI Data Centre Training Framework, Module 5: Power, Section 5.4.3: Isolation Transformers, Page 5-38 2: Guidelines for using isolation transformers in data center UPS systems - EEP1, Page 1 3: The Role of Isolation Transformers in Data Center UPS Systems2, Page 2 4: Data Center Transformer | Power Distribution - FGC Construction3, Page 1 5: EPI Data Centre Training Framework, Module 5: Power, Section
5.4.1: Electromagnetic Interference, Page 5-34 : Data centre transformers manufacturers - TMC Transformers4, Page 1 : The Role of Isolation Transformers in Data Center UPS Systems2, Page 25

問題 #63
Which one of the following is used in Measuring Business Value?

A. Regeneration Cost
B. Reliability
C. Upfront Cost
D. Scalability

答案：D

解題說明：
Measuring business value is the process of assessing the benefits and costs of IT investments and initiatives in relation to the strategic objectives and priorities of the organization. One of the factors that can be used to measure business value is scalability, which is the ability of a system or component to handle increasing workloads or demands without compromising performance, quality, or functionality. Scalability is important for business value because it enables the organization to adapt to changing market conditions, customer expectations, and growth opportunities. Scalability can also reduce operational costs, increase efficiency, and improve customer satisfaction. Therefore, scalability is one of the factors that can be used in measuring business value.
References:
*EPI Data Centre Training Framework1
*EPI Data Centre Competence Framework2
*Measuring the Business Value of IT3
*How to Measure the Business Value with Effective Data Quality Governance
*7 Rules for Demonstrating the Business Value of IT

問題 #64
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最優質的CDCP考試 & EXIN CDCP證照信息：Certified Data Centre Professional (CDCP)通過認證

EXIN CDCP 考試大綱：

免費下載的CDCP考試和資格考試的負責人和高效的CDCP：Certified Data Centre Professional (CDCP)

最新的 EPI Data Centre CDCP 免費考試真題 (Q59-Q64):

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