Computer Fundamentals MCQ | SET – 02
Here are 20 multiple-choice questions on Computer Fundamentals MCQ | SET – 02 along with their answers and explanations:
Question 01. What is the primary function of an operating system?
a) Manage hardware components
b) Execute application software
c) Control input and output devices
d) Provide user interface
Answer: d) Provide user interface
Explanation: The primary function of an operating system is to provide a user interface that allows users to interact with the computer system and execute application software.
Question 02. Which of the following is a volatile memory?
a) Hard disk
b) RAM
c) Flash drive
d) DVD
Answer: b) RAM
Explanation: RAM (Random Access Memory) is a volatile memory that stores data temporarily while the computer is running. It loses its contents when the power is turned off.
Question 03. What is the purpose of a compiler?
a) Execute program instructions
b) Store program data
c) Translate source code into machine code
d) Manage hardware resources
Answer: c) Translate source code into machine code
Explanation: A compiler is a software tool that translates high-level source code written by programmers into machine code that can be executed by the computer’s hardware.
Question 04. Which component is responsible for executing arithmetic and logical operations in a computer?
a) Central Processing Unit (CPU)
b) Random Access Memory (RAM)
c) Hard Disk Drive (HDD)
d) Graphics Processing Unit (GPU)
Answer: a) Central Processing Unit (CPU)
Explanation: The Central Processing Unit (CPU) is the primary component responsible for executing arithmetic and logical operations in a computer. It performs calculations, controls data flow, and coordinates the activities of other hardware components.
Question 05. What is the purpose of an input device?
a) Provide output to the user
b) Store data permanently
c) Accept data and instructions into the computer
d) Execute program instructions
Answer: c) Accept data and instructions into the computer
Explanation: Input devices are used to accept data and instructions from the user or other devices and transfer them into the computer system for processing.
Question 06. Which of the following is a high-level programming language?
a) Assembly language
b) C++
c) Machine language
d) Binary code
Answer: b) C++
Explanation: C++ is a high-level programming language that provides more abstraction and features than low-level languages like assembly language or machine language. It allows developers to write complex programs using a structured and easy-to-understand syntax.
Question 07. What is the function of an output device?
a) Provide input to the user
b) Store data temporarily
c) Accept data and instructions into the computer
d) Present processed information to the user
Answer: d) Present processed information to the user
Explanation: Output devices are used to present processed information to the user in a human-readable form. Examples include monitors, printers, and speakers.
Question 08. What is the purpose of an operating system’s file management system?
a) Create backups of files
b) Organize and control access to files
c) Generate reports on file usage
d) Maintain a log of file changes
Answer: b) Organize and control access to files
Explanation: The file management system of an operating system is responsible for organizing and controlling access to files. It provides functionalities like creating, modifying, deleting, and securing files, as well as managing file directories and hierarchies.
Question 09. Which component of a computer is responsible for storing the operating system and other software?
a) Central Processing Unit (CPU)
b) Hard Disk Drive (HDD)
c) Random Access Memory (RAM)
d) Motherboard
Answer: b) Hard Disk Drive (HDD)
Explanation: The hard disk drive (HDD) is a non-volatile storage device used for long-term data storage. It stores the operating system, software applications, and user data.
Question 10. What is the purpose of an Ethernet cable in computer networking?
a) Transmit electrical power to devices
b) Connect peripheral devices
c) Establish wireless connections
d) Transmit data between devices
Answer: d) Transmit data between devices
Explanation: Ethernet cables are used in computer networking to establish wired connections between devices. They transmit data signals between devices, allowing for reliable and high-speed data communication.
Question 11. Which programming language is widely used for developing web-based applications?
a) Java
b) C#
c) Python
d) JavaScript
Answer: d) JavaScript
Explanation: JavaScript is a popular programming language used for developing web-based applications. It is primarily executed in web browsers and enables dynamic and interactive functionality on websites.
Question 12. What is the purpose of an antivirus software?
a) Improve computer performance
b) Prevent unauthorized access to data
c) Defragment the hard disk
d) Detect and remove malicious software
Answer: d) Detect and remove malicious software
Explanation: Antivirus software is designed to detect, prevent, and remove malicious software (such as viruses, worms, and trojans) from a computer system. It helps protect against security threats and ensures the integrity of data and software.
Question 13. What does the acronym “HTML” stand for?
a) HyperText Markup Language
b) High-Level Programming Language
c) Human-Machine Language
d) Home Tool Markup Language
Answer: a) HyperText Markup Language
Explanation: HTML stands for HyperText Markup Language. It is the standard markup language used for creating web pages and describing their structure and content.
Question 14. Which of the following is an example of an input/output device?
a) Printer
b) Hard Drive
c) RAM
d) CPU
Answer: a) Printer
Explanation: A printer is an example of an input/output (I/O) device. It accepts data from the computer and produces a physical output, such as a printed document or image.
Question 15. What is the purpose of a firewall in computer security?
a) Prevent unauthorized physical access to a computer
b) Encrypt data transmissions over a network
c) Protect against unauthorized access to a computer network
d) Perform regular backups of data
Answer: c) Protect against unauthorized access to a computer network
Explanation: A firewall is a security device or software that monitors and controls incoming and outgoing network traffic. Its primary purpose is to protect computer networks from unauthorized access and potential threats.
Question 16. Which type of software allows users to perform specific tasks, such as word processing or spreadsheet calculations?
a) System software
b) Utility software
c) Application software
d) Firmware
Answer: c) Application software
Explanation: Application software refers to programs or applications designed to perform specific tasks or functions for end-users. Examples include word processors, spreadsheet software, and web browsers.
Question 17. What does the acronym “URL” stand for?
a) Universal Resource Locator
b) Uniform Resource Locator
c) Unified Resource Locator
d) Unique Resource Locator
Answer: b) Uniform Resource Locator
Explanation: URL stands for Uniform Resource Locator. It is a web address used to locate and identify resources, such as web pages, on the internet.
Question 18. Which type of computer memory is non-volatile and retains its contents even when the power is turned off?
a) RAM
b) Cache memory
c) ROM
d) Flash memory
Answer: c) ROM
Explanation: ROM (Read-Only Memory) is a type of computer memory that is non-volatile and retains its contents even when the power is turned off. It contains permanent instructions or data that cannot be modified.
Question 19. What is the purpose of a computer’s BIOS?
a) Manage computer peripherals
b) Perform complex mathematical calculations
c) Provide a graphical user interface
d) Initialize hardware components and boot the operating system
Answer: d) Initialize hardware components and boot the operating system
Explanation: BIOS (Basic Input/Output System) is firmware embedded in a computer’s motherboard. It initializes hardware components, performs self-tests, and boots the operating system when the computer is powered on.
Question 20. What is the primary function of an operating system?
a) Manage hardware components
b) Execute application software
c) Control input and output devices
d) Provide user interface
Answer: d) Provide user interface
Explanation: The primary function of an operating system is to provide a user interface that allows users to interact with the computer system and execute application software.
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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