Computer Fundamentals MCQ | SET – 03
Here are some multiple-choice questions about Computer Fundamentals MCQ | SET – 03 along with their answers and explanations. Here are 20 Questions for you:
Question 01. What is the primary function of the CPU (Central Processing Unit)?
a) Storing data
b) Executing instructions
c) Displaying output
d) Managing memory
Answer: b) Executing instructions
Explanation: The CPU is responsible for executing instructions and performing calculations in a computer. It is often referred to as the “brain” of the computer.
Question 02. Which of the following is an example of an input device?
a) Printer
b) Monitor
c) Keyboard
d) Speakers
Answer: c) Keyboard
Explanation: A keyboard is an input device that allows the user to enter data and commands into the computer. It is used to type text, numbers, and various commands.
Question 03. What is the purpose of an operating system?
a) Managing computer hardware
b) Creating documents and presentations
c) Connecting to the internet
d) Playing games
Answer: a) Managing computer hardware
Explanation: The operating system is responsible for managing computer hardware resources, such as memory, processors, storage, and input/output devices. It provides a platform for other software to run on and facilitates communication between software and hardware components.
Question 04. Which of the following is a volatile storage device?
a) Hard disk drive
b) Solid-state drive
c) USB flash drive
d) Random Access Memory (RAM)
Answer: d) Random Access Memory (RAM)
Explanation: RAM is a volatile storage device that temporarily holds data and instructions that the CPU needs to access quickly. It loses its contents when the computer is powered off or restarted.
Question 05. What is the purpose of a compiler?
a) Executes program instructions
b) Translates high-level programming code into machine code
c) Controls the flow of data between hardware devices
d) Provides a user interface for interacting with the computer
Answer: b) Translates high-level programming code into machine code
Explanation: A compiler is a software program that translates high-level programming code (e.g., C++, Java) into machine code that can be understood and executed by the computer’s CPU. It performs this translation in a single process before the program is run.
Question 06. What is the primary purpose of an operating system?
a) Managing hardware components
b) Executing application software
c) Providing a user-friendly interface
d) Controlling and coordinating computer resources
Answer: d) Controlling and coordinating computer resources
Explanation: An operating system is responsible for managing computer resources such as memory, CPU, storage, and devices. It provides a layer of abstraction between hardware and application software, allowing applications to run efficiently and smoothly.
Question 07. Which type of memory is non-volatile and retains data even when the power is turned off?
a) RAM (Random Access Memory)
b) Cache memory
c) ROM (Read-Only Memory)
d) Virtual memory
Answer: c) ROM (Read-Only Memory)
Explanation: ROM is a type of memory that retains its contents even when the power is turned off. It is typically used to store firmware, BIOS, and other essential system information that needs to be preserved permanently.
Question 08. Which computer port is commonly used to connect a keyboard to a computer?
a) USB (Universal Serial Bus) port
b) HDMI (High-Definition Multimedia Interface) port
c) VGA (Video Graphics Array) port
d) Ethernet port
Answer: a) USB (Universal Serial Bus) port
Explanation: USB ports are widely used for connecting various peripherals, including keyboards, mice, printers, and external storage devices, to a computer. USB offers a convenient and standardized interface for data transfer and power supply.
Question 09. What does the acronym CPU stand for?
a) Computer Processing Unit
b) Central Processing Unit
c) Control Processing Unit
d) Core Processing Unit
Answer: b) Central Processing Unit
Explanation: The CPU (Central Processing Unit) is the “brain” of the computer and is responsible for executing instructions, performing calculations, and controlling the overall operation of the computer system.
Question 10. Which programming language is known for its use in web development and allows for both front-end and back-end development?
a) Java
b) Python
c) HTML (Hypertext Markup Language)
d) JavaScript
Answer: d) JavaScript
Explanation: JavaScript is a popular programming language used for web development. It enables interactive and dynamic elements on websites, and with the help of Node.js, it can also be used for server-side (back-end) development.
Question 11. What is the primary function of the CPU in a computer?
a) Storing data
b) Executing instructions
c) Displaying graphics
d) Connecting to the internet
Answer: b) Executing instructions
Explanation: The CPU (Central Processing Unit) is responsible for executing instructions and performing calculations in a computer. It is often referred to as the “brain” of the computer.
Question 12. Which of the following is a volatile memory?
a) Hard disk drive
b) Flash drive
c) Random Access Memory (RAM)
d) Solid-State Drive (SSD)
Answer: c) Random Access Memory (RAM)
Explanation: RAM is a type of volatile memory that is used to temporarily store data and instructions while a computer is running. It is volatile because its contents are lost when the power is turned off.
Question 13. What is the purpose of an operating system?
a) Running applications
b) Managing computer hardware and software resources
c) Connecting to the internet
d) Storing files and folders
Answer: b) Managing computer hardware and software resources
Explanation: The operating system is responsible for managing computer hardware and software resources. It provides a layer of abstraction between the hardware and the user, allowing applications to run and interact with the computer’s resources.
Question 14. Which of the following storage devices has the largest storage capacity?
a) Hard disk drive
b) Solid-State Drive (SSD)
c) USB flash drive
d) Blu-ray disc
Answer: a) Hard disk drive
Explanation: Hard disk drives (HDDs) typically have larger storage capacities compared to other storage devices. They use rotating magnetic disks to store data and are commonly used for long-term storage in computers.
Question 15. What is the purpose of an input device?
a) Displaying output to the user
b) Storing data
c) Transmitting data over a network
d) Providing data or instructions to the computer
Answer: d) Providing data or instructions to the computer
Explanation: Input devices are used to provide data or instructions to a computer. Examples of input devices include keyboards, mice, scanners, and microphones.
Question 16. What does the acronym “LAN” stand for?
a) Local Area Network
b) Large Area Network
c) Longitudinal Access Network
d) Logical Allocation Network
Answer: a) Local Area Network
Explanation: LAN stands for Local Area Network. It refers to a network that connects computers and devices within a limited geographic area, such as a home, office, or building.
Question 17. Which of the following is an example of system software?
a) Microsoft Word
b) Adobe Photoshop
c) Windows operating system
d) Google Chrome
Answer: c) Windows operating system
Explanation: System software refers to the software that manages and controls the computer hardware and provides a platform for running applications. The Windows operating system is an example of system software.
Question 18. What is the purpose of a firewall?
a) Protecting a computer from physical damage
b) Filtering and blocking network traffic
c) Storing and managing data
d) Displaying web pages
Answer: b) Filtering and blocking network traffic
Explanation: A firewall is a network security device that monitors and controls incoming and outgoing network traffic. It acts as a barrier between a trusted internal network and untrusted external networks, filtering and blocking potentially harmful or unauthorized traffic.
Question 19. What is the function of the Central Processing Unit (CPU) in a computer?
a) It stores data temporarily
b) It performs arithmetic and logical operations
c) It displays output on the screen
d) It controls peripheral devices
Answer: b) It performs arithmetic and logical operations
Explanation: The CPU is considered the brain of the computer. It performs arithmetic and logical operations on data, executes instructions, and controls the overall operation of the computer.
Question 20. Which of the following is a primary input device for a computer?
a) Printer
b) Monitor
c) Keyboard
d) Speakers
Answer: c) Keyboard
Explanation: A keyboard is a primary input device that allows users to input text, commands, and other instructions into the computer.
Conclusion:
These questions cover some fundamental concepts in computer science. I hope the explanations help clarify the concepts for you.
Please note that these questions cover some fundamental concepts in computer science. If you have any specific topics or areas you’d like to explore further, feel free to ask!
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