[2026] CDCP Exam Dumps, Test Engine Practice Test Questions
Pass CDCP exam [Jun 13, 2026] Updated 90 Questions
NEW QUESTION # 26
What is the main advantage of busbar trunking compared to stand electrical cabling?
- A. Busbar trunking allows for flexibility.
- B. Busbar trunking has a fixed power rating.
- C. Busbar trunking is less expensive.
- D. Busbar trunking can be located both overhead and under the raised floor.
Answer: A
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.
References: Why I prefer busbar trunking systems more than cables | EEP, Why should you choose Busbar over Cable? - E+I Eng, Busbar VS Cables for Riser Applications - An Electrical Engineer.
NEW QUESTION # 27
Where should exit/emergency signs be located?
- A. Depends on the policy of the data centre
- B. At each door
- C. At every escape door and pathways leading to doors (arrows)
- D. In the Computer room only
Answer: C
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 emergency1. 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 exits23.
References: 1: EPI Data Centre Operations Standard (DCOS), Version 2.0, Section 5.4.2.1, Page 42 2: How to Prepare and Respond to Data Center Emergencies, White Paper 217, Schneider Electric, Page 4 3: How to Properly Manage Data Center Emergencies, IT Business Edge, Slide 2
NEW QUESTION # 28
Which one of the following is the last stage in Stages of Combustion?
- A. Visible Smoke
- B. Incipient
- C. Flaming Fire
- D. Intense Heat
Answer: C
Explanation:
The last stage in stages of combustion is flaming fire, which occurs when the fuel vapors and oxygen are mixed in the right proportion and ignited by a flame or a spark. Flaming fire is characterized by visible flames, intense heat, and rapid oxidation. Flaming fire can cause severe damage to the data center equipment, personnel, and business continuity. Therefore, it is important to prevent or suppress flaming fire as soon as possible using appropriate fire detection and suppression systems.
References:
*EPI Data Centre Professional (CDCP®) Preparation Guide, page 31
*[Fire Detection and Suppression Systems for Data Centers]
NEW QUESTION # 29
Which Class of Fire involves combustible metals or combustible metal alloys such as magnesium, sodium and potassium?
- A. Class D
- B. Class B
- C. Class C
- D. Class A
Answer: A
Explanation:
Class D fires involve combustible metals or combustible metal alloys such as magnesium, sodium and potassium. These metals can react violently with water, air, or other chemicals, and require special extinguishing agents1 References: 1: EPI Data Centre Professional (CDCP) Reference Materials, page 16.
NEW QUESTION # 30
What is the effect of a high relative humidity in the data centre?
- A. In a data centre environment relative humidity is not important, only temperature matters.
- B. There is a risk of corrosion.
- C. There is a risk of electrostatic discharge.
- D. There is a risk of not properly functioning of the smoke detectors.
Answer: B
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 # 31
What is the main risk for a data centre when the water supply fails?
- A. Failure to the water supply could cause issues for the cooling of back-up generators.
- B. Failure to the water supply could result in IT failure and/or denial of access to operate.
- C. Failure to the water supply could result in DX cooling systems to fail.
- D. Failure to the water supply could result in sudden changes of the relative humidity in the Computer room.
Answer: A
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.
References:
1: CDCP Preparation Guide, page 18, section 2.3.2 2: Data Center Generator Cooling Systems3, page 1, section 1 4: Data Center Cooling Systems5, page 1, section 1
NEW QUESTION # 32
Which one of the following is a device that uses circulating chilled water to remove heat?
- A. Computer Room Air System Unit (CRAS)
- B. Computer Room Air Suspension Unit (CRAS)
- C. Computer Room Air Suppression Unit (CRAS)
- D. Computer Room Air Handling Unit (CRAH)
Answer: D
Explanation:
A computer room air handling unit (CRAH) is a device that uses circulating chilled water to remove heat from the data center environment. A CRAH consists of a fan, a coil, and a filter. The fan draws the warm air from the data center and passes it through the coil, where the heat is transferred to the chilled water. The chilled water is supplied by a chiller or a cooling tower, and the cooled air is returned to the data center. A CRAH is different from a computer room air conditioning unit (CRAC), which uses a refrigerant instead of chilled water to cool the air.
References:
*EPI Data Centre Professional (CDCP) Preparation Guide, page 36
*Chilled Water Systems: Applications and Common Uses
*The Principles of Basic Refrigeration: What is a chiller?
NEW QUESTION # 33
The three elements of the fire triangle are,and. (Choose three.)
- A. Water
- B. Fuel
- C. Earth
- D. Heat
- E. Oxygen
Answer: B,D,E
Explanation:
The fire triangle is a simple model that illustrates the three elements that a fire needs to ignite and sustain:
oxygen, heat, and fuel. Oxygen is the oxidizing agent that enables the combustion reaction, heat is the energy source that raises the temperature of the fuel to its ignition point, and fuel is the material that reacts with oxygen and releases heat and light. Removing any one of these elements can extinguish a fire. For example, water can reduce the heat and the oxygen, sand or soil can smother the fuel and the oxygen, and fire extinguishers can displace the oxygen or lower the temperature.
References: EPI Data Centre Professional (CDCP) Reference Materials, page 66. EPI Data Centre Framework, Module 4: Fire Protection, page 4. 1, 2, 3.
NEW QUESTION # 34
What is a requirement for both CCTV cameras and recording equipment?
- A. They must be of the same brand.
- B. Both must be connected to a UPS.
- C. Both must be placed inside the Computer room.
- D. CCTV cameras can only be used to cover the outside of the building, where as the recording equipment needs to be located in a secure area.
Answer: B
Explanation:
A UPS (Uninterruptible Power Supply) is a device that provides backup power to electrical equipment in case of a power outage or fluctuation. A UPS is essential for both CCTV cameras and recording equipment, as it ensures that the surveillance system can continue to operate and record without interruption or data loss. A UPS can also protect the CCTV cameras and recording equipment from damage caused by power surges or spikes. Connecting both CCTV cameras and recording equipment to a UPS is a requirement for data centres, as it enhances the security and reliability of the surveillance system.
References: Technical Specification - GeM, [What is a UPS? | Uninterruptible Power Supply | APC by Schneider Electric], [Why You Need a UPS for Your CCTV System - CCTV Camera World].
NEW QUESTION # 35
When dealing with glass door racks, cod air is injected into the rack from:
- A. The front door in a downflow direction.
- B. The top of the rack through the fans and vents mounted inside the rack.
- C. The rear door in a downflow direction.
- D. The bottom of the rack.
Answer: C
NEW QUESTION # 36
Which Class of Fires involves ordinary combustible materials such as paper, wood and cloth?
- A. Class B
- B. Class A
- C. Class D
- D. Class K
Answer: B
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 # 37
What is a requirement of an FM200 (HFC-227) installation?
- A. Drainage system under the raised floor.
- B. Install pre-action sprinklers in the same room as the FM200.
- C. It is a high-pressure gas; therefore nozzles must be mounted with two brackets.
- D. Install the gas containers (tanks) close to the data centre.
Answer: C
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.
References:
*EPI Data Centre Professional (CDCP®) Preparation Guide, page 32
*FSL-227 Technical Manual, page 10
*Firetrace ILP Manual, page 21
NEW QUESTION # 38
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. To use Inergen only for fires which are not related to electrical power.
- C. Install protective covers around the nozzles to avoid accidental gas dumps.
- D. Install the gas containers (tanks) close to the data centre.
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 # 39
Which one of the following is an example of Direct Cost?
- A. Reduced customer satisfaction
- B. Negative public relations
- C. Legal fees
- D. Damaged brand perception
Answer: C
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.
References: EPI Data Centre Training Framework, CDCP Preparation Guide, Direct Cost - Overview, Examples, Tax Implications
NEW QUESTION # 40
Which one of the following is an example of Indirect Cost?
- A. Damaged brand perception
- B. Cost revenues
- C. System recovery
- D. Legal fees
Answer: A
Explanation:
Damaged brand perception is an example of an indirect cost because it is not directly related to a specific product or service, but rather to the overall reputation and image of the company. Damaged brand perception can result from various factors, such as poor quality, customer dissatisfaction, security breaches, or negative publicity. Damaged brandperception can affect the company's ability to attract and retain customers, partners, and investors, and thus reduce its profitability and competitiveness.
References: EPI Data Centre Training Framework, Indirect Cost: Definition and Example, What Is Indirect Cost? Definition, Types and Examples.
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NEW QUESTION # 41
What is the best practice for cutting holes in the raised floor tile?
- A. Draw a cross on the tile and when making a cut-out do not touch a line and avoid the corners.
- B. Cut the tiles at the corner so the pedestals can be used as a vertical cable manager.
- C. Anywhere as data centre tiles are designed to allow cut-outs anywhere.
- D. Draw a line in the middle of the tile and never touch the line when making the cut.
Answer: A
Explanation:
According to the Raised Floor Installation Manual, the best practice for cutting holes in the raised floor tile is to draw a cross on the tile and when making a cut-out do not touch a line and avoid the corners1. This ensures that the structural integrity and load-bearing capacity of the tile are not compromised. Cutting holes anywhere, touching the line, or cutting the corners can weaken the tile and cause it to crack or collapse1.
Additionally, the manual recommends using a drill press or a reciprocating saw with a metal or bi-metal cutting blade, and deburring all sharp edges1.
References: 1: Raised Floor Installation Manual, E. Recommended Cutting Tools, Page 1
NEW QUESTION # 42
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, but only if the power cable is placed in a tre-foil cable arrangement.
- D. Yes, as the shielding for twisted pair network cabling is specifically design for low frequency EMF protection.
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 # 43
What should be taken into consideration when using patch cables?
- A. Patch cables can only be used in combination with angled patch panels.
- B. The patch cable should always be the same or a higher class the structured cable.
- C. The patch cable should always be the same of a lower class the structured cable.
- D. Patch cables can only be used in combination with flat patch panels.
Answer: B
Explanation:
Patch cables of a lower class than the structured cabling can degrade the overall link performance, so it is best practice to use the same or higher class.
References:
CDCP Exam Preparation Guide, Cabling
NEW QUESTION # 44
Looking from within the Computer room, what should the door-swing (opening) direction be?
- A. Depends on the type of Computer room
- B. Instead of swinging doors, sliding doors are preferred
- C. Outwards, code permitted
- D. Inwards, code permitted
Answer: C
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 # 45
What should be a consideration when having casters (rollers/wheels) or feet under the rack?
- A. Casters and feet should not be locked to ensure the racks are still able to be moved to another position.
- B. Casters and feet should be of a soft material, for example rubber, to avoid damage to the raised floor tile.
- C. The casters and feet should be larger to avoid a too heavy point load on the floor tile.
- D. Skirts at the bottom of the rack to avoid air flow between the hot and cold aisles.
Answer: C
Explanation:
The casters and feet under the rack are used to support the weight of the rack and its equipment, and to allow the rack to be moved if needed. However, the casters and feet should also be designed to avoid putting too much pressure on the floor tile, especially if the data centre uses a raised floor system. A too heavy point load on the floor tile can cause the tile to crack, deform, or collapse, which can damage the rack, the equipment, and the underlying infrastructure. To prevent this, the casters and feet should be larger, so that they can distribute the weight over a larger area and reduce the point load. The casters and feet should also be compatible with the floor type and the load rating of the floor tile.
References:
1: CDCP Preparation Guide, page 22, section 2.4.1.1 2: Raised Floor Design Considerations for Data Center3, page 1, section 1 4: [SOLVED] server rack on casters or feet5, page 1, section 1
NEW QUESTION # 46
What is the most preferred unit of measure for cooling capacity?
- A. Ton
- B. BTU
- C. Horsepower
- D. Watt
Answer: D
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.
References:
*Data Centre Professional (CDCP®) Reference Materials, page 8, section 2.1.1
*Data Centre Professional (CDCP®) Preparation Guide, page 11, section 2.1.1
*Cooling capacity - Wikipedia
*Air Conditioner BTU Calculator
*Air conditioning 101: Basics, working principle and sizing ... - GlobalSpec
*How is cooling capacity measured? - Sage-Advices
*Everything You Need to Know About Cooling Capacity
NEW QUESTION # 47
The termination of the ability of a product to perform its required function can be defined as.
- A. Hindrance
- B. Failure
- C. Termination
- D. Obstacle
Answer: B
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 # 48
Which one of the following is a core objective of a Business Value in an organization?
- A. Increasing Sales
- B. None of the above
- C. Reducing Costs
- D. Reducing the Deficit
Answer: B
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 stakeholders1. 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.
References: 1: EPI Data Centre Professional (CDCP) Reference Materials, page 9.
NEW QUESTION # 49
What is the recommended location for the Isolation Transformer in relation to the ICT-Equipment location?
- A. The isolation transformer should be as far away as possible to the ICT equipment to avoid potential EMF.
- B. The isolation transformer should be installed within the rack in which the ICT equipment has been installed.
- 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 close as possible to the ICT equipment but taking into account potential EMF.
Answer: D
Explanation:
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
NEW QUESTION # 50
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