VALID CDCS-001 Exam Dumps For Certification Exam Preparation
CDCS-001 Dumps PDF 2023 Strategy Your Preparation Efficiently
NEW QUESTION 15
True or False: Human error is a major cause of data center downtime
- A. False
- B. True
Answer: B
Explanation:
Explanation
Human error is a major cause of data center downtime. Human mistakes are one of the top causes of data center outages, accounting for around one-third of all downtime incidents. Common causes of human error in data centers include misconfiguration, inadequate maintenance, and improper security practices. To reduce the risk of human error, it is important to ensure that data center staff receive proper training, have adequate access control measures in place, and are familiar with best practices for data center operations.
NEW QUESTION 16
Which one of the following is a disadvantage of Water Cooled System?
- A. All components are located inside the CRAC
- B. Condenser water piping loops long distances
- C. Introduces an additional source of liquid
- D. Usage of the building's condenser water is less expensive than chilled water
Answer: C
Explanation:
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.
NEW QUESTION 17
True or False: A grounded wire is connected to metal appliance cases
- A. False
- B. True
Answer: B
Explanation:
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.
NEW QUESTION 18
Every air distribution system has a ____________ system and a _________ system
- A. Supply, Reverse
- B. Maintenance, Regulation
- C. Supply, Release
- D. Supply, Return
Answer: D
Explanation:
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.
NEW QUESTION 19
Which one of the following is an overall consideration for physical security?
- A. Identify the problem
- B. Apply the solution
- C. Apply the technology
- D. Define the problem
Answer: D
Explanation:
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.
NEW QUESTION 20
Which one of the following is a Physical Security Device?
- A. Token card
- B. Contactless smart card
- C. Fiber optic cable
- D. Access Key
Answer: B
Explanation:
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.
NEW QUESTION 21
AC is more easily distributed than DC. This is because:
- A. AC can be transmitted using lighter wires.
- B. Wires have less resistance if they are carrying AC
- C. DC needs wires to be totally insulated, while AC wires can be bare, hung from insulator on pylons.
- D. AC can be transformed from a low voltage to a high voltage and back again with a transformer. DC cannot.
Answer: D
Explanation:
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.
NEW QUESTION 22
Which one of the following uses sensors such as laser beams or touch sensor?
- A. Alarms
- B. Backup device
- C. Server
- D. CCTV
Answer: A
Explanation:
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.
NEW QUESTION 23
Which type of Circuit Breaker uses an electromagnetic coil to pull a switch when a circuit carries too much current?
- A. Pull
- B. Thermal
- C. Static
- D. Magnetic
Answer: D
Explanation:
Explanation
Magnetic circuit breakers use an electromagnetic coil to pull a switch when a circuit carries too much current, thus tripping the circuit and preventing it from exceeding its rated amperage.
NEW QUESTION 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. wavelength
- B. frequency
- C. period
- D. amplitude
Answer: A
Explanation:
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).
NEW QUESTION 25
___________ protects electrical equipment from damage caused by overload or short circuit.
- A. IEC cable
- B. Volt switch
- C. Server
- D. Circuit breaker
Answer: D
Explanation:
Explanation
A circuit breaker is a device that protects electrical equipment from damage caused by overload or short circuit. It does this by automatically disconnecting the power supply when it detects a surge or drop in voltage, preventing the equipment from being damaged.
NEW QUESTION 26
Which one of the following describes the amount of resistance electricity encounters?
- A. Ampere
- B. Volts
- C. Ohm
- D. Watts
Answer: C
Explanation:
Explanation
Ohm () describes the amount of resistance electricity encounters. It is one of the base units of the International System of Units (SI), and is defined as the amount of resistance that a conductor has when a force of one volt is applied across it. Ohms are used to measure the electrical resistance of a circuit, and can be used to determine the power of a circuit or the amount of current flowing through it.
NEW QUESTION 27
Which one of the following is an advantage of Air Cooled Self-Contained System?
- A. It doesn't requires ductwork and/or dropped ceiling
- B. It has more heat removal capacity per unit
- C. Lowest installation cost
- D. All components contain more than one unit
Answer: A
Explanation:
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.
NEW QUESTION 28
Which one of the following is an advantage of Glycol Cooled System?
- A. Glycol pipes can run long distances and can service several CRAC units
- B. No maintenance of glycol
- C. No additional cost is required
- D. Can be used in big data centers
Answer: A
Explanation:
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.
NEW QUESTION 29
___________ measures the amount of electrical current flowing through a circuit during a specific time interval.
- A. Ohm
- B. Ampere
- C. Volts
- D. Watts
Answer: B
Explanation:
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/)
NEW QUESTION 30
Which type of outlet is used for non-computing devices?
- A. Static
- B. Grounding
- C. Convenience
- D. Harmonic
Answer: C
Explanation:
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
NEW QUESTION 31
Which one of the following is an advantage of using Natural Gas?
- A. Minimum carbon build up
- B. More exhaust able
- C. Tends to cost more
- D. Maximum carbon build up
Answer: A
Explanation:
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.
NEW QUESTION 32
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