EXIN EXIN-CDCP Online Practice Questions and Exam Preparation

EXIN EXIN-CDCP Online Questions & Answers

• Question 41:

  What is the effect of a high relative humidity in the data centre?

  A. There is a risk of electrostatic discharge.
  B. In a data centre environment relative humidity is not important, only temperature matters.
  C. There is a risk of not properly functioning of the smoke detectors.
  D. There is a risk of corrosion.
  D. There is a risk of corrosion.

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  Explanation

  High relative humidity in a data center can lead to corrosion of metal parts and electronic contacts, potentially causing failures. Electrostatic discharge is a risk with low humidity, not high.

  References:

  CDCP Exam Preparation Guide, Environmental Controls

• Question 42:

  Which operational approach provides the strongest basis for capacity planning?

  A. Use trend data together with expected demand and delivery lead times
  B. Add capacity only after a service has already failed
  C. Base decisions on the largest single reading ever observed
  D. Assume equipment demand will remain unchanged
  A. Use trend data together with expected demand and delivery lead times

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  Explanation

  Trends show how usage is changing, expected demand identifies future need, and lead times indicate when action must begin. Waiting for failure or relying on one isolated value creates avoidable capacity risk.

• Question 43:

  An operator receives an alarm that could affect service.

  What should happen first?

  A. Delete the alarm to prevent duplicate notifications
  B. Verify the condition and assess its potential impact
  C. Wait for a user complaint before investigating
  D. Change several system settings at the same time
  B. Verify the condition and assess its potential impact

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  Explanation

  Verification establishes whether the alarm reflects a real condition, and impact assessment guides the appropriate response and escalation. Deleting, delaying, or making uncontrolled changes can worsen the incident.

• Question 44:

  Which two characteristics make operational documentation dependable? Choose two.

  A. A named owner responsible for keeping it current
  B. Informal copies stored separately by each technician
  C. Controlled revisions that show the approved version
  D. Removal of review dates to avoid administrative work
  A. A named owner responsible for keeping it current
  C. Controlled revisions that show the approved version

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  Explanation

  Ownership creates responsibility for maintenance, and revision control identifies which instructions are approved. Uncontrolled personal copies can conflict and lead to inconsistent execution.

• Question 45:

  Which one of the following is an example of Direct Cost?

  A. Legal fees
  B. Damaged brand perception
  C. Negative public relations
  D. Reduced customer satisfaction
  A. Legal fees

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  Explanation

  Legal fees are an example of direct cost because they can be directly attributed to a specific project, product, or service. Legal fees are incurred for the purpose of obtaining legal advice, drafting contracts, resolving disputes, or complying with regulations related to the core business activity. Legal fees are not general overhead expenses that are shared by multiple cost objects.

• Question 46:

  Where should exit/emergency signs be located?

  A. Depends on the policy of the data centre
  B. At every escape door and pathways leading to doors (arrows)
  C. In the Computer room only
  D. At each door
  B. At every escape door and pathways leading to doors (arrows)

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  Explanation

  According to the EPI Data Centre Operations Standard (DCOS), exit/emergency signs should be located at every escape door and pathways leading to doors (arrows) to ensure a safe and quick evacuation in case of an emergency. This is also consistent with the best practices for data centre emergency preparedness and response, which recommend having a clear and visible signage system for emergency exits.

• Question 47:

  What is a requirement of an FM200 (HFC-227) installation?

  A. It is a high-pressure gas; therefore nozzles must be mounted with two brackets.
  B. Drainage system under the raised floor.
  C. Install the gas containers (tanks) close to the data centre.
  D. Install pre-action sprinklers in the same room as the FM200.
  A. It is a high-pressure gas; therefore nozzles must be mounted with two brackets.

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  Explanation

  FM200 (HFC-227) is a clean agent fire suppression system that uses a high-pressure gas to extinguish fires by reducing the oxygen concentration and absorbing the heat. FM200 is stored in cylinders at pressures of up to 42 bar (600 psi) and is released through nozzles into the protected area. Because of the high pressure, the nozzles must be mounted with two brackets to prevent them from moving or breaking during discharge.

  The brackets must be securely attached to the ceiling or wall and aligned with the nozzle outlet. The nozzle outlet must also be free of any obstructions that could affect the discharge pattern or distribution.

• Question 48:

  Which Class of Fires involves energized electrical equipment?

  A. Class A
  B. Class B
  C. Class C
  D. Class K
  C. Class C

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  Explanation

  Class C fires involve energized electrical equipment, such as computers, servers, switches, cables, and wiring. These fires require the use of non-conductive extinguishing agents, such as carbon dioxide, dry chemical, or clean agent, to prevent electrical shock and damage to the equipment. Water-based extinguishers, such as Class A or K, are not suitable for Class C fires, as water can conduct electricity and cause electrocution or short circuits.

• Question 49:

  Which formula can be used to define risk?

  A. Risk = Time * Quality
  B. Risk = Security * Criminality
  C. Risk = Impact * Probability
  D. Risk = Probability * Cost
  C. Risk = Impact * Probability

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  Explanation

  According to the CDCP Preparation Guide1, risk can be defined as the product of impact and probability.

  Impact is the measure of the negative consequences or losses that may result from a risk event, such as downtime, data loss, or damage to the data centre. Probability is the measure of the likelihood or frequency of a risk event occurring, based on historical data, expert judgment, or statistical analysis. By multiplying impact and probability, risk can be quantified and compared, which helps in prioritizing and mitigating the risks. For example, a risk event that has a high impact but a low probability may have the same risk level as a risk event that has a low impact but a high probability.

• Question 50:

  Looking from within the Computer room, what should the door-swing (opening) direction be?

  A. Outwards, code permitted
  B. Instead of swinging doors, sliding doors are preferred
  C. Depends on the type of Computer room
  D. Inwards, code permitted
  A. Outwards, code permitted

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  Explanation

  For safety and emergency egress, doors should swing outwards (towards the exit). This is a common building code and best practice in data centers.

  References:

  CDCP Exam Preparation Guide, Security and Safety