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NEW QUESTION # 20
Which Class of Fires involves energized electrical equipment?
- A. Class B
- B. Class A
- C. Class K
- D. Class C
Answer: D
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.
References: EPI Data Centre Training Framework, CDCP Preparation Guide, ABCs of Fire Extinguishers
NEW QUESTION # 21
What is the main difference between an Environmental Monitoring System (EMS) and a Building Management System (BMS)?
- A. A BMS only operates as a stand-alone system. An EMS can be configured as a redundant system.
- B. An EMS provides local alarms. A BMS provides both local and remote alarms.
- C. A BMS is only able to monitor dry contacts (on/off). An EMS can also monitor analog values.
- D. An EMS monitors only. A BMS monitors and controls.
Answer: D
Explanation:
The main difference between an Environmental Monitoring System (EMS) and a Building Management System (BMS) is that an EMS monitors only, while a BMS monitors and controls. An EMS is a system that collects and records data from various sensors and devices that measure environmental parameters, such as temperature, humidity, air quality, power, and water. An EMS provides alerts and reports based on the data, but it does not control or adjust the environmental conditions. A BMS is a system that integrates and manages various building systems, such as HVAC, lighting, security, fire, and access. A BMS not only monitors the data from these systems, but also controls and optimizes them to achieve the desired performance and efficiency. A BMS can also communicate with an EMS to receive data and provide feedback.
References:
1: Environmental Monitoring Systems vs Building Management Systems2, page 1, section 1 3: Building Monitoring System vs Environmental Monitoring System4, page 1, section 1 5: BUILDING AND ENVIRONMENTAL MANAGEMENT SYSTEMS AND HOW THEY MEET GMP ...6, page 1, section 1 7:
Environmental Monitoring System vs. Building Management System8, page 1, section 1
NEW QUESTION # 22
What type of heal does ICT equipment generate?
- A. Radiant heat
- B. Sensible heaT
- C. Latent heal
- D. Both latent and sensible heat
Answer: B
Explanation:
According to the Certified Data Centre Professional (CDCP) reference materials, ICT (Information and Communication Technology) equipment such as servers, switches, and storage devices generate sensible heat.
Sensible heat is the heat energy that causes a change in temperature of the air but does not contribute to humidity or moisture content. This is in contrast to latent heat, which involves a change in moisture (humidity) in the air, such as from evaporation or condensation.
ICT equipment does not introduce moisture into the environment; it only raises the temperature of the surrounding air, making it sensible heat. Proper data center cooling focuses on removing this sensible heat load to maintain optimal equipment operating conditions. Latent heat loads, such as those from people or water leaks, are typically not generated by ICT equipment and are managed differently in facility design.
Radiant heat is a minor consideration and typically refers to heat transferred by electromagnetic waves (e.g., from sunlight or hot surfaces), not the primary mode of heat transfer from ICT equipment, which is primarily through convection (airflow) and is measured as sensible heat.
:
EPI CDCP Exam Preparation Guide: https://www.epi-ap.com/uploads/file/exam%20prep
/english_preparation_guide_cdcp_202003.pdf
EPI Certified Data Centre Professional (CDCP) Course Content: https://www.epi-ap.com/services/1/3/4
/Certified_Data_Centre_Professional_(CDCP)
EPI Data Centre Framework: https://www.epi-ap.com/content/31/67/EPI_Data_Centre_Framework
NEW QUESTION # 23
What is the effect of a high relative humidity in the data centre?
- A. There is a risk of not properly functioning of the smoke detectors.
- B. There is a risk of electrostatic discharge.
- C. In a data centre environment relative humidity is not important, only temperature matters.
- D. There is a risk of corrosion.
Answer: D
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
NEW QUESTION # 24
Does shielded twisted pair network cabling provide protection against EMF from power cables?
- A. No, the shielding for twisted pair network cabling is for physical protection against vandalism and accidental cutting of the cable.
- B. No, the shielding is designed for alien cross-talk between network cables, it provides no or little protection against low frequency EMF.
- C. Yes, as the shielding for twisted pair network cabling is specifically design for low frequency EMF protection.
- D. Yes, but only if the power cable is placed in a tre-foil cable arrangement.
Answer: B
Explanation:
Shielded twisted pair cables (STP) are Ethernet cables that feature additional protection against electromagnetic interference from external sources, such as radio waves, microwaves, or other network cables.
This is achieved by wrapping each pair of wires with a conductive shield, usually made of foil or braided wire, and then enclosing the entire cable with another shield layer. However, this shielding is not effective against low frequency electromagnetic fields (EMF) from power cables, which can induce currents and voltages in the network cables and cause signal distortion or data loss. Low frequency EMF can only be reduced by increasing the distance between the power and network cables, or by using a tre-foil cable arrangement, which is a special configuration of three power cables twisted together to cancel out the magnetic fields they generate.
References: STP Cable: Your Shield Against Network Disturbances; What is Shielded Twisted Pair Cable? - Advantages, Disadvantages; Shielded vs. Unshielded Cables: What's the Difference? - Cable Matters.
NEW QUESTION # 25
A UPS has an internal battery tester, do you still need to separately test the batteries at block level?
- A. No, the UPS will automatically generate and alarm when de battery voltage is too low to operate.
- B. No, as mentioned the battery tester is already built-in the UPS.
- C. Testing batteries using the built-in battery tester or resting the batteries at block level does not increase the battery lifetime, therefore it is not recommended.
- D. Yes, the UPS will only test the batteries at string level which only gives an indication on the overall status of the battery string. Measurements at block level will provide more detailed information on the status and remaining lifetime of the batteries itself.
Answer: D
Explanation:
Block-level testing identifies weak or failing individual batteries that may not show up in string-level tests, enhancing overall system reliability.
References:
CDCP Exam Preparation Guide, Power/UPS Maintenance
NEW QUESTION # 26
Escape route signage should be placed where?
- A. At every door providing a pathway
- B. Only at emergency escape doors
- C. Only at the main entrance of the data centre building
- D. At every door including riser doors, doors of storage closets etc.
Answer: A
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 Guide1 and the EU Safety/Health Signs Directive2. 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.
References:
1: CDCP Preparation Guide, page 24, section 2.4.3 2: EU Safety/Health Signs Directive3, page 1, section 1
NEW QUESTION # 27
What is the minimum clearance space required below water sprinkler heads and nozzles of gas-based fire suppression systems?
- A. 60 cm / 24 inches
- B. 64 cm / 25 inches
- C. 120 cm / 47 inches
- D. 46 cm / 18 inches
Answer: D
Explanation:
The minimum clearance space required below water sprinkler heads and nozzles of gas-based fire suppression systems is 46 cm / 18 inches, according to the CDCP Preparation Guide1 and OSHA regulation 29 CFR
1910.159 © (10)2. This clearance space is necessary to ensure that the sprinkler spray or gas discharge can reach the fire and cover the protected area effectively. Any material or obstruction below this clearance space can interfere with the sprinkler or gas distribution and reduce the fire suppression performance. Therefore, building owners and managers should ensure that all storage and objects in the data centre are kept below this clearance space, and that the clearance space is maintained at all times.
References:
1: CDCP Preparation Guide, page 24, section 2.4.3 2: Clarification of OSHA regulation 29 CFR
1910.159©(10), Sprinkler ...3, page 1, section 1
NEW QUESTION # 28
Looking from within the Computer room, what should the door-swing (opening) direction be?
- A. Outwards, code permitted
- B. Inwards, code permitted
- C. Instead of swinging doors, sliding doors are preferred
- D. Depends on the type of Computer room
Answer: A
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
NEW QUESTION # 29
is the ability of a system or component to perform its required functions under stated conditions for a specified period of time.
- A. Availability
- B. Agility
- C. Reliability
- D. Scalability
Answer: C
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
NEW QUESTION # 30
Which design consideration should be implemented with an Inergen-based fire suppression system?
- A. Pressure relief valves are required in the room that needs protection.
- B. Install the gas containers (tanks) close to the data centre.
- C. To use Inergen only for fires which are not related to electrical power.
- D. Install protective covers around the nozzles to avoid accidental gas dumps.
Answer: A
Explanation:
A design consideration that should be implemented with an Inergen-based fire suppression system is to install pressure relief valves in the room that needs protection. Inergen is a clean agent fire suppression system that uses a mixture of inert gases (nitrogen, argon, and carbon dioxide) to displace the oxygen in the room and extinguish the fire. However, when Inergen is released into the room, it creates a sudden increase in pressure, which can damage the walls, doors, windows, and ceilings of the room. To prevent this, pressure relief valves are required to vent the excess pressure to the outside and maintain a safe pressure level inside the room.
Pressure relief valves should be designed and installed in accordance with the relevant standards and codes, such as NFPA 2001 and ISO 14520.
References:
1: CDCP Preparation Guide, page 24, section 2.4.3 2: Data Center Fire Suppression Systems Bring Unexpected Risk3, page 1, section 1 4: Inergen from Fire Eater - CSC Datacenter5, page 1, section 1 6:
Inergen Fire Suppression System7, page 1, section 1
NEW QUESTION # 31
Which type of Humidifier suspends quartz lamps over an open pool of water?
- A. Infrared Humidifiers
- B. Ultrasonic Humidifier
- C. Steam Canister Humidifier
- D. Water Canister Humidifier
Answer: A
Explanation:
Infrared humidifiers are a type of humidifier that use quartz lamps to heat water in an open pool and evaporate it into the air. They are energy-intensive and require frequent maintenance and cleaning. They are not recommended for data centers, as they can introduce contaminants and bacteria into the air, and increase the risk of fire and electrical hazards.
References: EPI Data Centre Training Framework, CDCP Preparation Guide, Make Humidification Adjustments | ENERGY STAR
NEW QUESTION # 32
Which Class of Fires involves ordinary combustible materials such as paper, wood and cloth?
- A. Class D
- B. Class B
- C. Class K
- D. Class A
Answer: D
Explanation:
According to the CDCP Preparation Guide, Class A fires involve ordinary combustible materials such as paper, wood and cloth. These materials leave behind ash or embers when they burn. Class A fires can be extinguished by water or other cooling agents that reduce the temperature of the fuel below its ignition point.
References: CDCP Preparation Guide, page 30. Basics of Fire Protection in a Data Center. 3 Levels of Data Center Fire Protection Standards. Three Levels of Data Center Fire Protection.
NEW QUESTION # 33
Cost of Downtime can be classified as.
- A. Mean and Median
- B. Classified and Declassified
- C. Direct and Indirect
- D. Up and Down
Answer: C
Explanation:
Cost of downtime is the total amount of money lost due to a data centre outage or disruption. It can be classified into two categories: direct and indirect. Direct costs are the immediate and measurable expenses incurred during or after an outage, such as lost revenue, lost productivity, recovery costs, compensation costs, penalties, etc. Indirect costs are the long-term and intangible impacts of an outage, such as reputation damage, customer dissatisfaction, loss of market share, legal liabilities, etc. Both direct and indirect costs can vary depending on the type, duration, and severity of the outage, as well as the industry, size, and location of the data centre.
References:
*EPI Data Centre Training Framework1
*EPI Data Centre Competence Framework2
*Understanding the Cost of Data Center Downtime3
*Uptime Institute's 2022 Outage Analysis Finds Downtime Costs and Consequences Worsening
*[INFOGRAPHIC] The Cost of Downtime: 21 Stats You Need to Know
NEW QUESTION # 34
is the ability of a system or component to perform its required functions under stated conditions for a specified period of time.
- A. Availability
- B. Agility
- C. Reliability
- D. Scalability
Answer: C
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
NEW QUESTION # 35
is the degree to which a system or component is operational and accessibility when required for use.
- A. Reliability
- B. Availability
- C. Agility
- D. Scalability
Answer: B
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.
NEW QUESTION # 36
Which type of Humidifier is composed of water-filled canister containing electrodes?
- A. Infrared Humidifiers
- B. Ultrasonic Humidifier
- C. Water Canister Humidifier
- D. Steam Canister Humidifier
Answer: D
Explanation:
A steam canister humidifier is a type of humidifier that uses electricity to heat water in a canister containing electrodes. The water conductivity and the water level determine the amount of current and steam production.
The steam canister humidifier is also known as an electrode boiler humidifier or an electrode steam humidifier123.
References: 1: EPI Data Centre Professional (CDCP) Reference Materials, page 192: Electrode and resistive type humidifiers compared | steamovap technologies inc3: Know-How | Electrode Steam Humidifier - Condair Group.
NEW QUESTION # 37
Which one of the following is an AC Power Quality Anomaly?
- A. Backup Condition
- B. Attenuation
- C. Signal Distortion
- D. Waveform Distortion
Answer: D
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.
References: EPI Data Centre Training Framework, CDCP Preparation Guide, 5 anomalies in AC power that can damage your home devices, 9 Most Common Power Quality Problems
NEW QUESTION # 38
Do I need to check the local standards if I already comply to international standards?
- A. You need to check the local standards to ensure compliance to these standards.
- B. Local standards do not to be checked as some countries have too many local standards, which will slow down the data centre construction.
- C. Compliance to only international standards is good enough as most local standards are derived from international standards.
- D. Data centres only need to comply to international standards since they are connected to a worldwide international network infrastructure.
Answer: A
Explanation:
Data centre design and infrastructure standards can vary from country to country, depending on the local regulations, codes, and practices. Therefore, it is important to check the local standards before designing, building, or operating a data centre in a specific location. Compliance to only international standards may not be sufficient or adequate to meet the local requirements, which could result in legal, financial, or operational risks. For example, some countries may have stricter fire safety, environmental, or energy efficiency standards than the international ones. Some countries may also have different electrical standards, such as voltage, frequency, or plug types. By checking the local standards, you can ensure that your data centre is compliant, safe, and efficient in the local context.
References:
1: Data Center Design: Which Standards to Follow?2, page 1, section 1 3: The Most Important Data Center Design and Infrastructure Codes and Standards4, page 1, section 1 5: Explaining the new family of ISO Data Centre Standards6, page 1, section 1 7: Standards for data centre certification. Is a changing coming?8, page 1, section 1
NEW QUESTION # 39
Measuring "Business Values" begins first with.
- A. Topology
- B. Budget
- C. Network
- D. Physical Infrastructure
Answer: B
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.
NEW QUESTION # 40
Which one of the following represents the three elements (oxygen, heat and fuel) to interact in order for the fire to exist?
- A. The Fire Class
- B. The Fire Triangle
- C. The Fire Hexagon
- D. The Fire Technology
Answer: B
Explanation:
The fire triangle is a simple model that illustrates the three elements a fire needs to ignite: heat, fuel, and an oxidizing agent (usually oxygen). A fire naturally occurs when the elements are present and combined in the right mixture. A fire can be prevented or extinguished by removing any one of the elements in the fire triangle.
References: EPI Data Centre Professional (CDCP) Preparation Guide, page 9; Fire triangle - Wikipedia; The Fire Triangle Explained - Fire Action
NEW QUESTION # 41
Which one of the following is an Objective of Data Center Fire Protection?
- A. Information
- B. Representation
- C. Depression
- D. Suppression
Answer: D
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
NEW QUESTION # 42
The termination of the ability of a product to perform its required function can be defined as.
- A. Termination
- B. Hindrance
- C. Obstacle
- D. Failure
Answer: D
Explanation:
According to the EPI Data Centre Professional (CDCP) Preparation Guide, failure is defined as "the termination of the ability of a product to perform its required function" (page 9). Failure can occur due to various reasons, such as wear and tear, design flaws, human errors, environmental factors, or external events.
Failure can affect the availability, reliability, and performance of a product, system, or service.
References:
*EPI Data Centre Professional (CDCP) Preparation Guide, page 9
*What is Failure? | Definition from WhatIs.com
NEW QUESTION # 43
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