EXIN EXIN-CDCP Online Practice Questions and Exam Preparation

EXIN EXIN-CDCP Online Questions & Answers

• Question 31:

  Which two practices improve the control of routine maintenance? Choose two.

  A. Define the work scope and affected systems before starting
  B. Allow each technician to change the scope without notification
  C. Confirm completion and record relevant findings
  D. Close the work record before testing the result
  A. Define the work scope and affected systems before starting
  C. Confirm completion and record relevant findings

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  Explanation

  A defined scope establishes boundaries for the activity, while completion checks and recorded findings show what was done and what condition was observed. Uncontrolled scope changes and premature closure weaken oversight.

• Question 32:

  Which one of the following is an Objective of Data Center Fire Protection?

  A. Information
  B. Representation
  C. Depression
  D. Suppression
  D. Suppression

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  Explanation

  The objective of data center fire protection is to suppress or extinguish a fire before it can cause significant damage to the equipment, personnel, or business continuity. Fire suppression systems are designed to reduce the heat, oxygen, or fuel elements of the fire triangle, and to limit the spread of fire and smoke. Fire suppression systems can be classified into two types: water-based and gas-based. Water-based systems include sprinklers, mist, and water spray systems, which use water as the extinguishing agent. Gas-based systems include inert gas, halocarbon, and clean agent systems, which use gases or chemicals as the extinguishing agent. The choice of fire suppression system depends on several factors, such as the fire risk, the type of fuel, the environmental impact, the reliability, the cost, and the compatibility with the data center equipment and operations.

  References:

  EPI Data Centre Professional (CDCP? Preparation Guide, page 31 A Comprehensive Approach To Data Center Fire Safety

• Question 33:

  Which one of the following is a core objective of a Business Value in an organization?

  A. Reducing Costs
  B. Reducing the Deficit
  C. Increasing Sales
  D. None of the above
  D. None of the above

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  Explanation

  According to the EPI Data Centre Professional (CDCP? Reference Materials, a core objective of a Business Value in an organization is to create value for customers and stakeholders. This means delivering products or services that meet or exceed customer expectations, while also generating profits or benefits for the organization and its shareholders. Reducing costs, reducing the deficit, and increasing sales are possible ways to achieve this objective, but they are not the core objective itself.

• Question 34:

  What is the purpose of a service corridor?

  A. To create a secure and conditioned environment where media can be stored in a controlled manner.
  B. 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.
  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.
  D. It provides a secure area where supporting facilities can be serviced and monitored on a 24x7 basis without disturbing the computer room.

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  Explanation

  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

• Question 35:

  Which two actions help maintain effective environmental control in an equipment room? Choose two.

  A. Seal unintended openings that allow conditioned air to bypass equipment
  B. Place temporary storage in open airflow paths
  C. Review environmental trends instead of relying on a single reading
  D. Disable alerts that occur during busy periods
  A. Seal unintended openings that allow conditioned air to bypass equipment
  C. Review environmental trends instead of relying on a single reading

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  Explanation

  Closing unintended bypass paths helps direct conditioned air where it is needed, while trend review reveals developing conditions that a single reading may miss. Storage obstructions and disabled alerts reduce control.

• Question 36:

  A maintenance activity could interrupt a critical service.

  Which preparation is most appropriate?

  A. Begin immediately so the work finishes sooner
  B. Prepare an approved plan with impact controls and a recovery path
  C. Ask the technician to remember the previous procedure
  D. Disable monitoring until the activity is complete
  B. Prepare an approved plan with impact controls and a recovery path

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  Explanation

  Controlled maintenance requires an agreed method, measures to limit impact, and a way to recover if the work does not proceed as expected. Memory-based execution and disabled monitoring remove important safeguards.

• Question 37:

  What is the main risk for a data centre when the water supply fails?

  A. Failure to the water supply could result in IT failure and/or denial of access to operate.
  B. Failure to the water supply could result in DX cooling systems to fail.
  C. Failure to the water supply could cause issues for the cooling of back-up generators.
  D. Failure to the water supply could result in sudden changes of the relative humidity in the Computer room.
  C. Failure to the water supply could cause issues for the cooling of back-up generators.

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  Explanation

  Back-up generators are essential for providing power to the data centre in case of a utility outage.

  However, back-up generators also generate a lot of heat, which needs to be dissipated by a cooling system.

  The cooling system may rely on water supply, either from the municipal network or from a dedicated tank. If the water supply fails, the cooling system may not function properly, leading to overheating and potential damage to the generators. This could compromise the reliability and availability of the data centre power supply and cause downtime or data loss.

• Question 38:

  Which one of the following is an AC Power Quality Anomaly?

  A. Signal Distortion
  B. Waveform Distortion
  C. Backup Condition
  D. Attenuation
  B. Waveform Distortion

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  Explanation

  Waveform distortion is a type of AC power quality anomaly that occurs when the shape of the voltage or current waveform deviates from the ideal sinusoidal shape. Waveform distortion can be caused by nonlinear loads, such as rectifiers, inverters, variable frequency drives, and electronic devices, that draw current in pulses or harmonics. Waveform distortion can result in overheating, reduced efficiency, malfunctioning, or damage of equipment.

• Question 39:

  A contractor needs temporary access to a technical area.

  Which control is most appropriate?

  A. Provide permanent unrestricted access for convenience
  B. Use shared staff credentials and delete the access log
  C. Authorize limited access, provide site guidance, and monitor the work
  D. Allow entry without confirming the work scope
  C. Authorize limited access, provide site guidance, and monitor the work

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  Explanation

  Temporary access should match the approved work and remain accountable through guidance and oversight. Permanent or shared access grants more privilege than the activity requires.

• Question 40:

  The expected time to Recover/Repair from a system from a failure is defined as.

  A. MTBF
  B. MCBF
  C. MLBF
  D. MTTR
  D. MTTR

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  Explanation

  The expected time to recover or repair from a system from a failure is defined as MTTR (mean time to recovery or mean time to repair). MTTR is the average time it takes to restore a system or product to its normal operation after a failure. MTTR includes the time spent on detecting, diagnosing, and fixing the problem. MTTR is an important metric for measuring the reliability and availability of a system or product, as well as the efficiency and effectiveness of the incident management process. A lower MTTR indicates a faster and more reliable recovery or repair process.