Which one of the following is an overall consideration for physical security?
Answer(s): D
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.
___________ measures the amount of electrical current flowing through a circuit during a specific time interval.
Answer(s): B
An ampere (A) is the unit of measurement for electric current. It measures the amount of electrical 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.
"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/)
Which one of the following describes the amount of resistance electricity encounters?
Answer(s): A
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.
A typical data center load would consist of _____ (Choose 3)
Answer(s): A,C,E
For which one of these processes is Direct Current essential, and will not work with alternating current?
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.
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