Q61. What is the primary function of the BIOS in a computer?
a) To manage the computer’s hard drive
b) To initialize hardware during startup and provide runtime services
c) To enhance graphics performance
d) To connect to the internet
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Correct Answer: b) To initialize hardware during startup and provide runtime services
Explanation: The BIOS (Basic Input/Output System) is firmware that initializes and tests hardware components during the computer’s startup process. It also provides runtime services for the operating system and applications, enabling the computer to boot and function correctly.
Q62. Which component of a computer system performs calculations and processes data?
a) Monitor
b) Hard drive
c) CPU
d) Power supply
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Correct Answer: c) CPU
Explanation: The CPU (Central Processing Unit) is the component responsible for performing calculations and processing data. It executes instructions from programs and manages operations within the computer, making it the core processor of computing tasks.
Q63. What type of memory is typically used for temporary data storage during program execution?
a) Hard disk
b) ROM
c) RAM
d) Flash memory
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Correct Answer: c) RAM
Explanation: RAM (Random Access Memory) is used for temporary data storage during program execution. It allows the CPU to quickly access and manipulate data that is actively being used or processed. Unlike ROM or hard disk storage, RAM is volatile and loses its data when the power is turned off.
Q64. Which device would you use to capture a digital image or photograph?
a) Scanner
b) Printer
c) Camera
d) Monitor
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Correct Answer: c) Camera
Explanation: A camera is a device used to capture digital images or photographs. It converts light into electronic signals that are processed to create digital photos. Cameras can be standalone devices or integrated into other devices such as smartphones and tablets.
Q65. What is the purpose of a device driver in a computer system?
a) To manage the power supply
b) To connect external devices to the internet
c) To enable communication between the operating system and hardware
d) To increase the computer’s storage capacity
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Correct Answer: c) To enable communication between the operating system and hardware
Explanation: A device driver is software that enables communication between the operating system and hardware components or peripherals. It acts as a translator, allowing the operating system to interact with hardware devices like printers, graphics cards, and keyboards.
Q66. What does the term ‘plug and play’ refer to in computing?
a) The ability to use software without installation
b) The capability of hardware devices to work automatically when connected
c) The process of manually configuring device settings
d) The option to upgrade the operating system
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Correct Answer: b) The capability of hardware devices to work automatically when connected
Explanation: ‘Plug and play’ refers to the capability of hardware devices to be automatically recognized and configured by the operating system when connected to the computer. This feature simplifies the process of adding new peripherals, such as printers or USB drives, without requiring manual installation of drivers.
Q67. Which of the following is a common input device?
a) Monitor
b) Printer
c) Mouse
d) Speaker
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Correct Answer: c) Mouse
Explanation: A mouse is a common input device used to interact with a computer. It allows users to point, click, and navigate through graphical user interfaces by moving a cursor on the screen. Other examples of input devices include keyboards and scanners.
Q68. What is the primary role of a power supply unit (PSU) in a computer?
a) To manage the computer’s graphics performance
b) To convert and distribute electrical power to various components
c) To store data for long-term use
d) To enhance the speed of the CPU
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Correct Answer: b) To convert and distribute electrical power to various components
Explanation: The power supply unit (PSU) converts electrical power from an external source (such as an electrical outlet) into the appropriate voltages needed by the computer’s internal components. It distributes power to the motherboard, CPU, storage devices, and other hardware.
Q69. Which of the following is an example of a non-volatile storage device?
a) Cache memory
b) Random Access Memory (RAM)
c) Solid-State Drive (SSD)
d) CPU registers
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Correct Answer: c) Solid-State Drive (SSD)
Explanation: A Solid-State Drive (SSD) is a non-volatile storage device that retains data even when the computer is powered off. It uses flash memory to store data, making it suitable for long-term data storage compared to volatile memory like RAM.
Q70. What does the term ‘system unit’ refer to in a computer system?
a) The external monitor and keyboard
b) The CPU, motherboard, and internal components
c) The printer and speakers
d) The software applications and operating system
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Correct Answer: b) The CPU, motherboard, and internal components
Explanation: The system unit refers to the main enclosure of a computer that houses the CPU, motherboard, RAM, hard drive, and other internal components. It is the core part of the computer system, excluding external peripherals like the monitor and keyboard.