EXIN EXIN-CDCP Online Practice Questions and Exam Preparation

EXIN EXIN-CDCP Online Questions & Answers

• Question 21:

  is the degree to which a system or component is operational and accessibility when required for use.

  A. Scalability
  B. Agility
  C. Reliability
  D. Availability
  D. Availability

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  Explanation

  Availability is the degree to which a system, product or component is operational and accessible when required for use. It is one of the attributes of reliability, which is the ability of a system or component to perform its required functions under stated conditions for a specified period of time. Availability can be calculated as the ratio of the expected value of the uptime (the time when the system is functional) to the total time (uptime plus downtime) of a system or component. Availability can also be influenced by factors such as maintainability, fault tolerance, redundancy, diagnostics, and logistics.

  References:

  EPI Data Centre Professional (CDCP? Preparation Guide, page 8

  Availability - Wikipedia;

  Reliability - ISO 25000.

• Question 22:

  Which two items are essential in an effective shift handover? Choose two.

  A. Unresolved alarms and active incidents
  B. Personal opinions about equipment vendors
  C. Ongoing changes and temporary operating conditions
  D. A list of employees who are not scheduled
  A. Unresolved alarms and active incidents
  C. Ongoing changes and temporary operating conditions

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  Explanation

  The incoming shift needs to know about unresolved events and any temporary conditions created by current work. These details preserve operational continuity and reduce the chance that important actions are missed.

• Question 23:

  is the ability of a system or component to perform its required functions under stated conditions for a specified period of time.

  A. Scalability
  B. Agility
  C. Reliability
  D. Availability
  C. Reliability

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  Explanation

  According to the IEEE definition, reliability is the ability of a system or component to perform its required functions under stated conditions for a specified period of time. Reliability is a measure of how often a system or component fails, and how long it takes to recover from a failure. Reliability is closely related to availability, which is the degree to which a system or component is operational and accessible when required for use. Reliability and availability are both affected by factors such as design, maintenance, testing, and environmental conditions.

  References:

  EPI Data Centre Training Framework, CDCP Preparation Guide, Reliability engineering - Wikipedia

• Question 24:

  Measuring "Business Values" begins first with.

  A. Physical Infrastructure
  B. Topology
  C. Network
  D. Budget
  D. Budget

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  Explanation

  Measuring "Business Values" begins first with budgeting and identifying the costs associated with the project. This includes understanding the economic impact of the project, such as the cost of labor, materials, and other resources. It is also important to evaluate the return on investment (ROI) of the project, which will help to determine its overall value. Additionally, it is important to consider the long-term impact of the project and its potential to add value to the business in the future.

• Question 25:

  Escape route signage should be placed where?

  A. Only at emergency escape doors
  B. Only at the main entrance of the data centre building
  C. At every door providing a pathway
  D. At every door including riser doors, doors of storage closets etc.
  C. At every door providing a pathway

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  Explanation

  Escape route signage should be placed at every door providing a pathway to the exit or the assembly area, according to the CDCP Preparation Guide and the EU Safety/Health Signs Directive. Escape route signage is used to guide the occupants of the data centre fromwherever they are in the building, via a place of relative safety (the escape route), to the place of ultimate safety (the assembly area). Escape route signage should not be limited to only emergency escape doors or the main entrance of the data centre building, as these may not be accessible or visible from all locations. Escape route signage should also not include doors that do not lead to the exit or the assembly area, such as riser doors, doors of storage closets, or doors of other rooms, as these may confuse or mislead the occupants. Escape route signage should be placed at every door that provides a pathway to the exit or the assembly area, and should indicate the direction and distance of the escape route using pictograms, arrows, and words.

  Escape route signage should also be designed and installed in accordance with the relevant standards and codes, such as BS 5499 and ISO 7010.

• Question 26:

  Which source is used in fiber cable to transmit data?

  A. Signals
  B. Electric
  C. Light
  D. Pulse
  C. Light

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  Explanation

  Fiber-optic cables use light as the source to transmit data. Light pulses are modulated to carry information through an optical fiber. The light is confined in the core of the fiber by total internal reflection at the core-cladding interface. The light travels along the fiber with minimal loss or interference, making it suitable for long-distance and high-bandwidth applications.

• Question 27:

  What is the most preferred unit of measure for cooling capacity?

  A. Ton
  B. Watt
  C. BTU
  D. Horsepower
  B. Watt

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  Explanation

  Cooling capacity is the measure of a cooling system's ability to remove heat from a space. The most preferred unit of measure for cooling capacity is watt (W), which is the SI unit for power. Watt is defined as the amount of energy transferred or converted per unit time. One watt is equal to one joule of energy per second. Using watt as the unit of measure for cooling capacity allows for easy comparison and calculation of the cooling performance and efficiency of different cooling systems.

  Other units of measure for cooling capacity are ton, BTU, and horsepower, but they are less common and less convenient than watt. Ton is a unit of measure that describes how much water at freezing temperature can be frozen in 24 hours, equivalent to 3.5 kW or 12,000 BTU/h. BTU (British Thermal Unit) is a unit of measure that describes the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit, equivalent to 0.293

  W. Horsepower is a unit of measure that describes the rate at which work is done, equivalent to 746 W.

• Question 28:

  A critical replacement part has a long procurement time.

  How should the operations team address this?

  A. Ignore the lead time because failures cannot be predicted
  B. Base spare-part planning on equipment criticality and replacement delay
  C. Stock the same quantity of every possible part
  D. Wait until the part fails before identifying a supplier
  B. Base spare-part planning on equipment criticality and replacement delay

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  Explanation

  Criticality and procurement delay indicate which spares justify advance planning. Equal stocking wastes resources, while waiting for failure can extend service disruption.

• Question 29:

  What is the main advantage of busbar trunking compared to stand electrical cabling?

  A. Busbar trunking is less expensive.
  B. Busbar trunking has a fixed power rating.
  C. Busbar trunking allows for flexibility.
  D. Busbar trunking can be located both overhead and under the raised floor.
  C. Busbar trunking allows for flexibility.

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  Explanation

  Busbar trunking systems are a method of power distribution using rigid copper or aluminium conductors to distribute the power around a building. Busbar trunking systems have many advantages over cables, such as lower space requirements, higher short-circuit strength, lower fire load, and easier installation. One of the main advantages of busbar trunking is that it allows for flexibility in terms of power transmission and distribution. Busbar trunking systems can be easily relocated, modified, or expanded to accommodate changes in the building layout or load demand. Busbar trunking systems can also be fitted with various components, such as tap-off units, elbows, tees, and end feed units, to provide power to different locations and consumers. Busbar trunking systems can also be installed both overhead and under the raised floor, depending on the design and preference of the building.

• Question 30:

  Which one of the following does a Physical Infrastructure consists of in a Data Centre?

  A. Hub
  B. Switch
  C. Rack
  D. Server
  C. Rack

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  Explanation

  A physical infrastructure in a Data Center consists of racks, which are metal frames used to store and organize server and other IT equipment. The racks are usually arranged in rows and columns, and they can be used to hold servers, storage devices, and other pieces of IT equipment. The racks can also be used to organize cables and other components to ensure that the Data Center is kept organized and efficient.