Certified Data Centre Specialist (CDCS)練習テスト2023年最新のCDCS-001ストレスなしで合格させちゃう！
練習GAQM: Date Centre CDCS-001問題集オンライン試験練習テストと詳細な解説付き！
質問 # 22
How many approaches are there to remove unwanted heat from an IT environment?
- A. Four
- B. Six
- C. Seven
- D. Five
正解：D
解説：
Explanation
There are five common approaches to removing unwanted heat from an IT environment:
* Air conditioning: using mechanical cooling to remove heat from the air.
* Air economization: using outside air to cool the IT environment when the temperature is cooler than the desired temperature inside the data center.
* Liquid cooling: using a liquid coolant to absorb and remove heat from IT equipment.
* Evaporative cooling: using water evaporation to cool the air.
* Immersion cooling: submerging IT equipment in a liquid coolant to remove heat.
質問 # 23
Which one of the following Volt Configurations support commercial environments and data centers?
- A. Single phase 120V
- B. Single phase 240V
- C. Single phase 120V and 240V
- D. 3-phase 280V
正解：D
質問 # 24
The distance that a signal's energy can travel in the time it takes for one cycle to occur is called the signal's:
- A. amplitude
- B. frequency
- C. period
- D. wavelength
正解：D
解説：
Explanation
Wavelength is a measure of the distance that a signal's energy can travel in the time it takes for one cycle of the signal to occur. It is calculated by dividing the speed of light by the frequency of the signal. Wavelength is generally expressed in meters (m).
質問 # 25
What is a Data Center?
- A. A building or portion of a building whose primary function is to research new data.
- B. A room in a building dedicated to monitoring data and information.
- C. A building or a portion of a building whose primary function is to house a computer room and its related support areas
- D. A building or a portion of a building where debugging takes place
正解：C
解説：
Explanation
A building or a portion of a building whose primary function is to house a computer room and its related support areas. A Data Center is a secure, temperature-controlled environment that houses computer systems, equipment, and associated components. It is typically used to store, process, and distribute large amounts of data and information. Data Centers typically include server racks, storage arrays, network switches, firewalls, and other components necessary for the operation of computer systems.
質問 # 26
AC is more easily distributed than DC. This is because:
- A. AC can be transmitted using lighter wires.
- B. AC can be transformed from a low voltage to a high voltage and back again with a transformer. DC cannot.
- C. DC needs wires to be totally insulated, while AC wires can be bare, hung from insulator on pylons.
- D. Wires have less resistance if they are carrying AC
正解：B
解説：
Explanation
AC can be transformed from a low voltage to a high voltage and back again with a transformer, while DC cannot. This makes it easier to distribute AC electricity over long distances and is why it is used more widely than DC electricity. A and B are also true, as wires carrying AC can be bare and don't need to be totally insulated. Wires have less resistance when carrying AC electricity, which is why it is more efficient than DC.
質問 # 27
Whenever electrical power is being consumed in an IT room or data center. __________ is generated.
- A. Condensation
- B. Static electricity
- C. Humidity
- D. Heat
正解：D
解説：
Explanation
Whenever electrical power is being consumed in an IT room or data center, heat is generated. This heat must be removed in order to maintain an optimal temperature for the equipment, and this is usually done through cooling systems such as air conditioning, air economization, liquid cooling, evaporative cooling, and immersion cooling.
質問 # 28
Every air distribution system has a ____________ system and a _________ system
- A. Supply, Release
- B. Supply, Return
- C. Maintenance, Regulation
- D. Supply, Reverse
正解：B
解説：
Explanation
Every air distribution system has a supply system, which delivers conditioned air to the space, and a return system, which collects the air from the space and returns it to the air handling unit. The return system is responsible for providing the necessary negative pressure in the space to ensure proper air circulation.
質問 # 29
True or False: A grounded wire is connected to metal appliance cases
- A. True
- B. False
正解：A
解説：
Explanation
A grounded wire is connected to metal appliance cases in order to provide a safe path for electricity to flow in the event of a short circuit or other electrical problem. This helps to protect the appliance and the people using it from potential electrical shocks, and it also helps prevent fires and other accidents.
質問 # 30
Which one of the following is a disadvantage of Water Cooled System?
- A. Condenser water piping loops long distances
- B. All components are located inside the CRAC
- C. Usage of the building's condenser water is less expensive than chilled water
- D. Introduces an additional source of liquid
正解：D
解説：
Explanation
Water cooled systems introduce an additional source of liquid, which can be a potential source of contamination and damage to the IT equipment. Additionally, water cooled systems require more maintenance than air cooled systems and are more expensive to install due to the additional cost of the cooling tower, piping, and pumps.
質問 # 31
Which one of the following is an advantage of Air Cooled Self-Contained System?
- A. It has more heat removal capacity per unit
- B. All components contain more than one unit
- C. It doesn't requires ductwork and/or dropped ceiling
- D. Lowest installation cost
正解：C
解説：
Explanation
Air cooled self-contained systems are highly efficient and do not require ductwork and/or dropped ceiling for installation. This makes them a great choice for locations where installation costs are a major factor, such as in residential applications, or in places with limited space. Additionally, air cooled self-contained systems have more heat removal capacity per unit compared to water cooled systems, making them more cost-effective in the long run.
質問 # 32
__________ represents the maximum power cable of being drawn by the equipment.
- A. VA rating
- B. Grade rating
- C. Star rating
- D. Power rating
正解：D
解説：
Explanation
Power rating represents the maximum power that can be drawn by the equipment. It is usually measured in watts (W) or kilowatts (kW) and represents the maximum amount of power that the equipment can consume without causing damage to the device or the power source.
VA rating (Volt-Ampere rating) is a measure of the apparent power in a circuit, which is the product of the voltage and current in the circuit. It is often used to describe the power handling capability of electronic devices and equipment.
Star rating is a rating system used to indicate the energy efficiency of electrical devices and equipment. The rating ranges from 1 to 5 stars, with 5 stars indicating the most energy-efficient device.
Grade rating is a rating system used to indicate the quality of electrical devices and equipment. It is used in different industry and can indicate the quality of electronic component and material used in equipment.
質問 # 33
Which one of the following is an advantage of Glycol Cooled System?
- A. No additional cost is required
- B. No maintenance of glycol
- C. Glycol pipes can run long distances and can service several CRAC units
- D. Can be used in big data centers
正解：C
解説：
Explanation
Glycol cooled systems are advantageous because they are efficient and can service large data centers with multiple racks. Furthermore, glycol pipes can run long distances, allowing a single system to service several CRAC units. This eliminates the need for multiple systems, resulting in cost savings and reduced maintenance.
質問 # 34
Which type of outlet is used for non-computing devices?
- A. Grounding
- B. Convenience
- C. Static
- D. Harmonic
正解：B
解説：
Explanation
Convenience outlets, also known as duplex receptacles or wall outlets, are used to provide power to non-computing devices, such as lamps, televisions, and other household appliances. They are typically found in residential and commercial buildings and are connected to a circuit breaker or fuse for protection against overloading and electrical fires
質問 # 35
Which one of the following measures the real power drawn by the load equipment?
- A. Amps
- B. Amperes
- C. Volts
- D. Watts
正解：D
解説：
Explanation
Watts measures the real power drawn by the load equipment and is determined by multiplying the volts and amps of the load
質問 # 36
A __________ generator system is a combination of an electrical generator and a mechanical engine mounted together to form a single piece of equipment.
- A. software
- B. passive
- C. active
- D. standby
正解：D
解説：
Explanation
A Standby Generator System is a combination of an electrical generator and a mechanical engine mounted together to form a single piece of equipment. The generator provides power to essential appliances and equipment in the event of a power outage. Standby Generator Systems are usually powered by gasoline, diesel, natural gas, or propane, and they are designed to be able to be activated quickly in the event of an emergency.
質問 # 37
Which one of the following is a Physical Security Device?
- A. Contactless smart card
- B. Token card
- C. Access Key
- D. Fiber optic cable
正解：A
解説：
Explanation
A contactless smart card is a physical security device that uses radio frequency identification (RFID) technology to identify and authenticate an individual. This type of card is used in a variety of applications, such as access control systems and digital payment systems. It is also used in physical access control systems, where the card is used to unlock doors or grant access to restricted areas. Contactless smart cards are also used in building access systems, where the card is used to grant access to certain areas of the building.
質問 # 38
Which mounted system is used to cool small IT environments?
- A. Air Mounted System
- B. Floor Mounted System
- C. Chilled Mounted System
- D. Ceiling Mounted System
正解：A
解説：
Explanation
An air mounted system is often used to cool small IT environments. This type of cooling system is typically mounted on the wall or ceiling and works by blowing cool air into the room to lower the temperature. Air mounted systems are compact, easy to install and maintain, and can be a cost-effective solution for small spaces.
質問 # 39
......
時間限定！今すぐ無料アクセスCDCS-001練習問題：https://drive.google.com/open?id=1FHWR4WNgFNhFAxlN8nhR92KCE0eEcx7u
最適なCDCS-001試験学習資料と準備材料を提供しています：https://www.goshiken.com/GAQM/CDCS-001-mondaishu.html