A+ Form Factors And Power Supplies Chapter 4 Test
A computer is made up of a lot of components and needs power to operate. A form factor refers to the size, shape, and packaging of a hardware device. Server computers typically come in one of three form factors. The quiz below tests what you understood from the chapter on form factors. Give it a try!
Questions and Answers
- 1.
Which of the following drives the decision on which form factor to use?
- A.
CPU
- B.
Motherboard
- C.
CD-ROM
- D.
Peripheral devices
Correct Answer
B. MotherboardExplanation
The motherboard drives the decision on which form factor to use because it determines the physical layout and size of the computer system. Different motherboards support different form factors, such as ATX, micro ATX, or mini ITX. The form factor of the motherboard determines the size and shape of the computer case, as well as the compatibility of other components such as the CPU and peripheral devices. Therefore, the motherboard is the primary factor that influences the choice of form factor for a computer system.Rate this question:
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- 2.
Which of the following is the latest form factor?
- A.
NLX
- B.
BTX
- C.
ATX
- D.
Baby AT
Correct Answer
B. BTXExplanation
BTX (Balanced Technology eXtended) is the latest form factor. It was introduced by Intel as an improvement over the ATX form factor. BTX offers better cooling and noise reduction capabilities compared to ATX, as it features a redesigned layout and airflow system. It also supports newer technologies such as PCI Express and Serial ATA. NLX and Baby AT are older form factors that have been largely replaced by ATX and BTX.Rate this question:
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- 3.
Which of the following electronic device holds an electrical charge for a period of time and smooths the uneven flow of electricity through a circuit?
- A.
Transistor
- B.
Resistor
- C.
Capacitor
- D.
Diode
Correct Answer
C. CapacitorExplanation
A capacitor is an electronic device that can store electrical charge for a period of time. It consists of two conductive plates separated by an insulating material. When a voltage is applied across the plates, one plate accumulates positive charge while the other accumulates negative charge. This stored charge can then be released when needed, smoothing out the uneven flow of electricity through a circuit. Therefore, a capacitor is the correct answer for the given question.Rate this question:
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- 4.
Which of the following electronic devices protects equipment against sudden changes in power level?
- A.
Joule meter
- B.
Advanced Configuration and Power Interface (ACPI)
- C.
Electromagnetic Interference Suppressor
- D.
Surge protector
Correct Answer
D. Surge protectorExplanation
A surge protector is an electronic device that safeguards equipment from sudden changes in power level, such as power surges or spikes. These power fluctuations can occur due to lightning strikes, power outages, or electrical faults. Surge protectors work by diverting excess voltage away from the connected devices, preventing damage to them. They typically have multiple outlets and may also include features like surge suppression and noise filtering to provide additional protection. Therefore, a surge protector is the correct answer for protecting equipment against sudden changes in power level.Rate this question:
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- 5.
True or False? The form factor describes the size, shape, and major features of a hardware component.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The form factor refers to the physical characteristics of a hardware component, including its size, shape, and major features. This includes factors such as the dimensions, mounting options, and connectors present on the component. Therefore, the statement "The form factor describes the size, shape, and major features of a hardware component" is true.Rate this question:
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- 6.
True or False? Using a soft switch, an OS such as Windows XP can turn off the power to a system after the shutdown procedure is done.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
Using a soft switch, an operating system like Windows XP can turn off the power to a system after the shutdown procedure is done. This means that the operating system has the capability to control the power supply and initiate a complete shutdown of the system, including cutting off the power. This feature allows for a more efficient and convenient shutdown process, as it eliminates the need for manually turning off the power after shutting down the system.Rate this question:
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- 7.
True or False? BTX motherboards cannot use an ATX power supply.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The statement "BTX motherboards cannot use an ATX power supply" is false. BTX motherboards are designed to be compatible with ATX power supplies. The BTX form factor was introduced as an alternative to the ATX form factor, but it still supports the use of ATX power supplies. This allows users to easily upgrade their system without having to replace the power supply.Rate this question:
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- 8.
True or False? Black wire is used for ground in PC's and DC circuits, as well as in home wiring and in AC circuits.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
False. In PC's and DC circuits, the black wire is commonly used for the negative or return path, while the ground wire is usually green or bare. In home wiring and AC circuits, the black wire is typically used for the hot or live wire, while the ground wire is green or bare.Rate this question:
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- 9.
True or False? A power supply is considered a field replaceable unit.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
A power supply is considered a field replaceable unit because it is designed to be easily replaced in the field without requiring any special tools or expertise. This means that if a power supply fails or needs to be upgraded, it can be quickly and easily replaced by simply unplugging the old unit and plugging in a new one. This convenience and ease of replacement make power supplies a common example of field replaceable units in various electronic devices and systems.Rate this question:
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- 10.
A computer case is also known as a ____________________.
- A.
Box
- B.
Container
- C.
Chassis
- D.
Profile
Correct Answer
C. ChassisExplanation
A computer case is also known as a chassis. The term "chassis" refers to the framework or outer structure of a computer case that houses and protects the internal components of a computer system. It provides a sturdy and secure enclosure for the various hardware components such as the motherboard, power supply, storage devices, and cooling system. The chassis also often includes features such as expansion slots, drive bays, and ports for connecting peripherals.Rate this question:
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- 11.
There are two types of backplanes: ________________ and _______________. *Be sure to choose two answers!
- A.
Active
- B.
Flush
- C.
Protruding
- D.
Passive
Correct Answer(s)
A. Active
D. PassiveExplanation
Active backplanes are capable of processing and controlling data, while passive backplanes simply act as a connector or interface between different components. Active backplanes have their own circuitry and can perform functions such as data routing, signal amplification, and protocol conversion. Passive backplanes, on the other hand, rely on external devices to perform these functions. Therefore, the correct answer is active and passive, as these are the two types of backplanes based on their functionality.Rate this question:
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- 12.
When replacing a damaged motherboard with a good one, first test the __________________.
- A.
Video card
- B.
Memory
- C.
Transistors
- D.
Power supply
Correct Answer
D. Power supplyExplanation
When replacing a damaged motherboard with a good one, it is important to first test the power supply. This is because a faulty power supply can cause various issues such as insufficient power delivery to the components, leading to system instability or failure. By testing the power supply, one can ensure that it is functioning properly and providing adequate power to the motherboard and other components. This helps in preventing any potential damage to the new motherboard and ensures a smooth and successful replacement process.Rate this question:
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- 13.
A measure of electrical current is called _______________.
- A.
Ohms
- B.
Amps or amperes
- C.
Watts
- D.
Whatts
Correct Answer
B. Amps or amperesExplanation
The correct answer is "Amps or amperes." Amps or amperes is the unit used to measure electrical current. It represents the rate at which electric charges flow in a circuit. Ohms is the unit used to measure electrical resistance, watts is the unit used to measure power, and "whatts" is not a recognized unit of measurement.Rate this question:
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- 14.
House current in the United States oscillates 60 times in on second (60 hertz). Is this AC or DC current?
- A.
AC
- B.
DC
Correct Answer
A. ACExplanation
The correct answer is AC (alternating current). In the United States, the house current oscillates 60 times per second, indicating a frequency of 60 hertz. AC current alternates its direction periodically, allowing for the efficient transmission of electricity over long distances. In contrast, DC (direct current) flows in one direction only and is commonly used in batteries and electronic devices.Rate this question:
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- 15.
_________ _____________ travels in only on direction and is the type of current that most electronic devices require, including computers.
- A.
Direct current
- B.
Alternating current
- C.
Oscillating current
- D.
Neutral current
Correct Answer
A. Direct currentExplanation
Direct current is the correct answer because it travels in only one direction and is the type of current that most electronic devices require, including computers. Unlike alternating current, which constantly changes direction, direct current provides a consistent flow of electricity, making it ideal for powering electronic devices. Oscillating current and neutral current are not valid options as they do not accurately describe the type of current required by electronic devices.Rate this question:
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- 16.
A _____________ is a material such as gold or copper, that easily conducts electricity.
- A.
Insulator
- B.
Conductor
- C.
Semiconductor
- D.
Semiinsulator
Correct Answer
B. ConductorExplanation
A conductor is a material that easily conducts electricity, such as gold or copper. Conductors have a high number of free electrons that are able to move freely within the material when an electric field is applied. This allows for the easy flow of electric current through the conductor.Rate this question:
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- 17.
A ______________ is a material, such as glass or ceramic, that resists the flow of electricity.
- A.
Conductor
- B.
Insulator
- C.
Semiconductor
- D.
Semiinsulatro
Correct Answer
B. InsulatorExplanation
An insulator is a material that does not allow the flow of electricity easily. It has high resistance to the flow of electric current. Materials like glass and ceramic are examples of insulators as they do not conduct electricity well. Unlike conductors, which allow electricity to flow through them easily, insulators prevent the flow of electrical charges, making them suitable for applications where electrical isolation is required.Rate this question:
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- 18.
What does this symbol represent on an electrical diagram?
- A.
Diode
- B.
Resistor
- C.
Capacitor
- D.
Ground
Correct Answer
B. ResistorExplanation
This symbol represents a resistor on an electrical diagram. A resistor is an electronic component that limits the flow of electric current in a circuit. It is typically represented by a zigzag line in circuit diagrams. Resistor values are measured in ohms and they are used to control the amount of current flowing through a circuit and to adjust voltage levels.Rate this question:
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- 19.
What does this symbol represent on an electrical diagram?
- A.
Capacitor
- B.
Resistor
- C.
Diode
- D.
Ground
Correct Answer
D. GroundExplanation
This symbol on an electrical diagram represents the ground. Ground is a reference point in an electrical circuit that is connected to the earth or a large conducting body, such as a metal water pipe or a grounding rod. It serves as a common return path for electric current and helps to prevent electrical shocks and equipment damage.Rate this question:
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- 20.
___________ is caused by the magnetic field produced as a side effect when electricity flows.
- A.
EMI
- B.
ESD
- C.
Diode
- D.
Surge
Correct Answer
A. EMIExplanation
EMI stands for Electromagnetic Interference, which is caused by the magnetic field produced as a side effect when electricity flows. This interference can disrupt the normal functioning of electronic devices and can be caused by various sources such as power lines, motors, and radio signals. EMI can result in signal degradation, data loss, or even complete failure of electronic systems. Therefore, EMI is the correct answer in this case.Rate this question:
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Mar 22, 2023Quiz Edited by
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Mar 11, 2010Quiz Created by
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