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CDCS-001認定は世界中で認識されており、IT業界で非常に評価されています。認定プログラムは、データセンターを効果的に管理するために必要なスキルと知識を個人に提供するように設計されています。このプログラムは、データセンターの設計、運用、メンテナンス、セキュリティなど、幅広いトピックをカバーしています。認定プログラムは、データセンター管理のスキルと知識を高め、分野の専門家として認められたいと考えている専門家にとって理想的です。
GAQM CDCS-001（認定データセンタースペシャリスト）試験は、データセンターで働く専門家のための認定プログラムです。この試験は、データセンターの設計、運用、管理に関連する幅広いトピックをカバーしています。試験に合格した参加者は、認定データセンタースペシャリストとして認められ、彼らの専門的な信憑性を高め、キャリアを進めるのに役立ちます。
質問 # 22
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 # 23
For which one of these processes is Direct Current essential, and will not work with alternating current?
- A. Turning a motor
- B. Heating
- C. Lighting
- D. Electrolysis
正解：D
解説：
Explanation
Direct Current (DC) is essential for the process of electrolysis. Electrolysis is the process of breaking down a compound using an electric current. The electric current causes ions to move, which results in a chemical reaction that breaks down the compound. In order for electrolysis to work, a direct current is required, as the ions must flow in one direction. Alternating Current (AC) changes direction and would not provide a consistent flow of ions.
Heating, lighting, and turning a motor can be done by either DC or AC. Heating can be done by passing an electric current through a heating element, which can be powered by either DC or AC. Lighting can be done by passing an electric current through a light bulb, which can be powered by either DC or AC. A motor can be powered by either DC or AC, but the type of motor and the application will determine which type of current is more suitable.
質問 # 24
Which system in Air Distribution System takes the hot exhaust air from the IT equipment to the CRAC
- A. Return system
- B. Regulation system
- C. Maintenance system
- D. Supply system
正解：A
解説：
Explanation
The return system in an air distribution system takes the hot exhaust air from the IT equipment and returns it to the Computer Room Air Conditioner (CRAC) unit. The CRAC unit cools the hot exhaust air and recirculates it back into the data center. The return system typically includes ducts, grills, and other components that allow the hot air to be efficiently and effectively returned to the CRAC unit.
Supply system is responsible for bringing in the cooled and filtered air from the CRAC unit to the data center.
Maintenance system and regulation system are not related to air distribution system in the data center.
質問 # 25
Which one of the following is an overall consideration for physical security?
- A. Apply the technology
- B. Define the problem
- C. Apply the solution
- D. Identify the problem
正解：B
解説：
Explanation
Defining the problem is an important overall consideration for physical security. This process involves identifying and analyzing the threats and vulnerabilities that could potentially affect the security of the system, as well as determining what steps need to be taken to mitigate these risks. This process should be done before any other steps are taken to ensure physical security, as it helps to ensure that the security measures are tailored to the specific needs of the system.
質問 # 26
___________ measures the amount of electrical current flowing through a circuit during a specific time interval.
- A. Watts
- B. Ampere
- C. Volts
- D. Ohm
正解：B
解説：
Explanation
An ampere (A) is the unit of measurement for electric current. It measures the amount of electrical current flowing through a circuit during a specific time interval. The ampere is named after Andre-Marie Ampere, a French mathematician and physicist who was one of the main discoverers of electromagnetism.
Ohm () is the unit of measurement for electric resistance, which is the opposition to the flow of an electric current through a circuit.
Volt (V) is the unit of measurement for electric potential difference, which is the energy required per unit charge to move a test charge between two places in a static electric field.
Watt (W) is the unit of measurement for power, which is the rate at which energy is used or generated in an electrical circuit.
References:
* "Current" (https://www.britannica.com/topic/current-electricity)
* "Electric current" (https://www.sciencedirect.com/topics/engineering/electric-current)
* "Units of Measurement"
(https://www.allaboutcircuits.com/textbook/direct-current/chpt-1/units-of-measurement/)
質問 # 27
Which one of the following uses sensors such as laser beams or touch sensor?
- A. Server
- B. Backup device
- C. Alarms
- D. CCTV
正解：C
解説：
Explanation
Alarms are physical security devices that use sensors such as laser beams or touch sensors to detect movement or intrusion. These devices are used to alert the user of any unauthorized activity in the area. Alarms can also be used in combination with CCTV cameras to provide a comprehensive security system.
質問 # 28
A typical data center load would consist of _____ (Choose 3)
- A. Power generator
- B. Software
- C. Networking equipment
- D. Cooling equipment
- E. Computers
正解：A、D、E
質問 # 29
Which type of power can be a source available to the data center that takes over the function of supplying when utility power is unavailable?
- A. Passive
- B. Active
- C. Standby
- D. Alternate
正解：C
解説：
Explanation
Standby power, also known as backup power, is a type of power that can be a source available to the data center that takes over the function of supplying when utility power is unavailable. Standby power systems are designed to provide power to critical loads in the event of a power outage, and can include generators, uninterruptible power supplies (UPS), and batteries. Standby power systems can be used to provide power to the data center for a short period of time, such as a few hours or days, until utility power is restored.
Passive, Active and Alternate are not specific type of power sources used in data center. They are terms used in different context and have different meaning.
質問 # 30
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 # 31
Data Center Precision Cooling Systems maintain temperature within _____________ degree(s) of their design set point.
- A. 0
- B. 1
- C. 2
- D. 3
正解：C
質問 # 32
______________ security means keeping unauthorized or ill-intentioned people out of places that they do not belong.
- A. Network
- B. Topological
- C. Logical
- D. Physical
正解：D
解説：
Explanation
Physical security means keeping unauthorized or ill-intentioned people out of places that they do not belong.
This can involve a variety of measures, such as locks, alarms, access control systems, cameras, and guards.
Physical security is an important part of any security system, as it helps to protect valuable assets and personnel from theft, vandalism, and other malicious activities.
質問 # 33
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 # 34
True or False: Fuel availability generally dictates the type of standby generator selected
- A. True
- B. False
正解：A
解説：
Explanation
Fuel availability generally dictates the type of standby generator selected as different types of generators use different types of fuel. For example, gasoline generators are typically used in residential or small commercial applications, while diesel generators are usually used in larger industrial and commercial applications. Propane or natural gas generators may also be used, depending on the availability of fuel sources.
質問 # 35
If a waveform period is determined to be 10 microseconds in duration, what is the frequency of the signal?
- A. 100 Hz
- B. 100 kHz
- C. 1000 Hz
- D. 10 kHz
正解：B
解説：
Explanation
Frequency is the inverse of period, so to calculate the frequency of a signal with a period of 10 microseconds, you would divide 1 by the period, which is equal to 100 kHz.
質問 # 36
Which one of the following is an advantage of using Natural Gas?
- A. Minimum carbon build up
- B. Maximum carbon build up
- C. Tends to cost more
- D. More exhaust able
正解：A
解説：
Explanation
The main advantage of using natural gas is that it tends to produce fewer carbon emissions than other fossil fuels, such as coal or oil. Natural gas combustion produces less carbon dioxide and other pollutants than other fuels, making it a cleaner and more renewable source of energy. Additionally, natural gas costs less than other fuels, making it a more cost-effective option.
質問 # 37
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CDCS認定プログラムは、ITプロフェッショナルがデータセンター管理の専門知識を証明する優れた方法です。この認定は、世界的に認められており、IT業界の雇用主に高く評価されています。この認定は、候補者がデータセンターを効果的に管理し運用するために必要な知識とスキルを持っていることを示しています。さらに、この認定は、プロフェッショナルがキャリアの見通しを向上させ、収益性を高める機会を提供します。
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