Here’s a set of 100 important computer multiple-choice questions (MCQs) along with their answers, tailored for tests in Pakistan:
Computer MCQs with Answers
- What does CPU stand for?
- a) Central Processing Unit
- b) Central Programming Unit
- c) Computer Personal Unit
- d) Central Performance Unit
Answer: a) Central Processing Unit
- Which of the following is an input device?
- a) Monitor
- b) Printer
- c) Keyboard
- d) Projector
Answer: c) Keyboard
- What is the main function of the operating system?
- a) To manage hardware
- b) To create documents
- c) To play games
- d) To browse the internet
Answer: a) To manage hardware
- Which of the following is not an operating system?
- a) Windows
- b) Linux
- c) Android
- d) Microsoft Office
Answer: d) Microsoft Office
- What does RAM stand for?
- a) Random Access Memory
- b) Read Access Memory
- c) Ready Access Memory
- d) Randomized Access Memory
Answer: a) Random Access Memory
- What is the purpose of an antivirus?
- a) To speed up the computer
- b) To protect against malware
- c) To increase storage
- d) To enhance graphics
Answer: b) To protect against malware
- Which of the following is a programming language?
- a) HTML
- b) CSS
- c) Python
- d) SQL
Answer: c) Python
- What is the smallest unit of data in a computer?
- a) Byte
- b) Bit
- c) Kilobyte
- c) Megabyte
Answer: b) Bit
- Which of the following is used for permanent storage?
- a) RAM
- b) Cache
- c) Hard Disk
- d) CPU
Answer: c) Hard Disk
- Which component is known as the brain of the computer?
- a) Memory
- b) Hard Disk
- c) CPU
- d) Graphics Card
Answer: c) CPU
- What does GUI stand for?
- a) Graphical User Interface
- b) General User Interface
- c) Graphical Unified Interface
- d) Generalized User Interface
Answer: a) Graphical User Interface
- Which of the following is a web browser?
- a) Microsoft Word
- b) Mozilla Firefox
- c) Adobe Photoshop
- d) Microsoft Excel
Answer: b) Mozilla Firefox
- What is phishing?
- a) A data backup technique
- b) A form of cyberattack
- c) A programming error
- d) A database management system
Answer: b) A form of cyberattack
- Which of the following is not a primary storage device?
- a) RAM
- b) ROM
- c) Cache
- d) Hard Disk
Answer: d) Hard Disk
- What is the function of a modem?
- a) To connect to the internet
- b) To store data
- c) To process data
- d) To display graphics
Answer: a) To connect to the internet
- What is the default file extension for Word documents?
- a) .doc
- b) .docx
- c) .txt
- d) .xls
Answer: b) .docx
- Which memory is non-volatile?
- a) RAM
- b) Cache
- c) ROM
- d) Register
Answer: c) ROM
- Which of the following is an example of system software?
- a) Microsoft Word
- b) Windows 10
- c) Adobe Reader
- d) Mozilla Firefox
Answer: b) Windows 10
- What is the primary purpose of a firewall?
- a) To speed up the internet
- b) To protect a network
- c) To clean viruses
- d) To manage files
Answer: b) To protect a network
- Which protocol is used for sending emails?
- a) HTTP
- b) FTP
- c) SMTP
- d) TCP
Answer: c) SMTP
- What does the term “bandwidth” refer to?
- a) The speed of a processor
- b) The amount of data transmitted in a given time
- c) The storage capacity of a hard drive
- d) The size of a network
Answer: b) The amount of data transmitted in a given time
- Which of the following is not a type of software?
- a) Application software
- b) System software
- c) Malware
- d) Hardware
Answer: d) Hardware
- What is the main function of a database?
- a) To perform calculations
- b) To store and manage data
- c) To display graphics
- d) To write code
Answer: b) To store and manage data
- Which device is used to connect multiple computers in a network?
- a) Switch
- b) Router
- c) Modem
- d) Hub
Answer: a) Switch
- What is a byte?
- a) 4 bits
- b) 8 bits
- c) 16 bits
- d) 32 bits
Answer: b) 8 bits
- What is the purpose of a graphics card?
- a) To increase processing speed
- b) To enhance audio quality
- c) To render images and videos
- d) To manage files
Answer: c) To render images and videos
- Which of the following is a type of malware?
- a) Antivirus
- b) Spyware
- c) Firewall
- d) Backup
Answer: b) Spyware
- What does URL stand for?
- a) Uniform Resource Locator
- b) Universal Resource Locator
- c) Unified Resource Locator
- d) Unique Resource Locator
Answer: a) Uniform Resource Locator
- What is the purpose of an operating system?
- a) To manage hardware and software resources
- b) To provide security
- c) To increase performance
- d) To manage files
Answer: a) To manage hardware and software resources
- Which of the following is an example of an optical storage device?
- a) Hard Drive
- b) Flash Drive
- c) CD
- d) RAM
Answer: c) CD
- What is the main component of a computer that performs calculations?
- a) RAM
- b) CPU
- c) Hard Drive
- d) Motherboard
Answer: b) CPU
- Which type of network covers a small geographical area?
- a) WAN
- b) LAN
- c) MAN
- d) PAN
Answer: b) LAN
- What is the function of a router?
- a) To store data
- b) To manage network traffic
- c) To create graphics
- d) To install software
Answer: b) To manage network traffic
- Which of the following file formats is used for images?
- a) .mp3
- b) .jpg
- c) .doc
- d) .xls
Answer: b) .jpg
- What does the acronym BIOS stand for?
- a) Basic Integrated Operating System
- b) Basic Input/Output System
- c) Binary Input/Output System
- d) Basic Interconnected Operating System
Answer: b) Basic Input/Output System
- Which of the following is a cloud storage service?
- a) Microsoft Excel
- b) Google Drive
- c) Adobe Photoshop
- d) Notepad
Answer: b) Google Drive
- Which of the following is a web development language?
- a) Python
- b) HTML
- c) Java
- d) C++
Answer: b) HTML
- What is the purpose of a hard drive?
- a) To process data
- b) To store data permanently
- c) To provide power
- d) To display images
Answer: b) To store data permanently
- Which of the following is a programming paradigm?
- a) Object-oriented
- b) Graphical
- c) Tabular
- d) Analytical
Answer: a) Object-oriented
- What does the term “bytecode” refer to?
- a) Compiled code for hardware
- b) Intermediary code for virtual machines
- c) High-level programming language
- d) Source code
Answer: b) Intermediary code for virtual machines
- Which is the main function of a compiler?
- a) To execute code
- b) To convert source code to machine code
- c) To debug code
- d) To create user interfaces
Answer: b) To convert source code to machine code
- Which of the following is an example of a spreadsheet application?
- a) Microsoft Word
- b) Microsoft Excel
- c) Adobe Reader
- d) Mozilla Firefox
Answer: b) Microsoft Excel
- What is the function of an ALU (Arithmetic Logic Unit)?
- a) To manage input/output devices
- b) To perform arithmetic and logical operations
- c) To store data
- d) To execute programs
Answer: b) To perform arithmetic and logical operations
- Which of the following is not a type of database?
- a) Relational
- b) Non-relational
- c) Object-oriented
- d) Spreadsheet
Answer: d) Spreadsheet
- What does the acronym FTP stand for?
- a) File Transfer Protocol
- b) Fast Transfer Protocol
- c) File Transmission Protocol
- d) Fast Transmission Protocol
Answer: a) File Transfer Protocol
- Which type of software is designed to perform specific tasks for users?
- a) System software
- b) Application software
- c) Firmware
- d) Utility software
Answer: b) Application software
- What is the primary role of a server?
- a) To store and manage data
- b) To process user input
- c) To control hardware
- d) To provide services to clients
Answer: d) To provide services to clients
- Which of the following is a type of computer memory?
- a) Keyboard
- b) Monitor
- c) SSD
- d) Router
Answer: c) SSD
- Which of the following technologies is used for wireless communication?
- a) Ethernet
- b) Wi-Fi
- c) USB
- d) HDMI
Answer: b) Wi-Fi
- What is the primary function of a printer?
- a) To display images
- b) To create hard copies of documents
- c) To process data
- d) To manage files
Answer: b) To create hard copies of documents
- Which programming language is primarily used for web development?
- a) C#
- b) Java
- c) JavaScript
- d) Python
Answer: c) JavaScript
- Which of the following is not a computer network topology?
- a) Star
- b) Ring
- c) Linear
- d) Mesh
Answer: c) Linear
- What does DNS stand for?
- a) Domain Name System
- b) Data Network Service
- c) Domain Network System
- d) Data Name Service
Answer: a) Domain Name System
- What is the purpose of a backup?
- a) To improve performance
- b) To prevent data loss
- c) To speed up processes
- d) To install software
Answer: b) To prevent data loss
- Which of the following is a common file format for audio files?
- a) .mp4
- b) .mp3
- c) .jpg
- d) .doc
Answer: b) .mp3
- What is the primary function of a motherboard?
- a) To store data
- b) To connect components of a computer
- c) To process data
- d) To manage power supply
Answer: b) To connect components of a computer
- Which of the following is a form of system software?
- a) Microsoft Word
- b) Windows Defender
- c) Google Chrome
- d) Adobe Photoshop
Answer: b) Windows Defender
- What is a URL used for?
- a) To locate resources on the internet
- b) To send emails
- c) To store files
- d) To create databases
Answer: a) To locate resources on the internet
- Which of the following is used to protect data on a hard drive?
- a) Firewall
- b) Antivirus
- c) Encryption
- d) Compression
Answer: c) Encryption
- What does the term “open source” mean?
- a) Software that is free to use and modify
- b) Software that requires a license
- c) Software that is only available in libraries
- d) Software that is pre-installed on devices
Answer: a) Software that is free to use and modify
- Which of the following is a key benefit of cloud computing?
- a) Reduced security
- b) Increased accessibility
- c) Higher costs
- d) Limited storage
Answer: b) Increased accessibility
- What is the main function of a USB flash drive?
- a) To connect to the internet
- b) To provide storage
- c) To display images
- d) To manage hardware
Answer: b) To provide storage
- Which of the following file extensions is associated with spreadsheets?
- a) .docx
- b) .xlsx
- c) .pptx
- d) .txt
Answer: b) .xlsx
- What does the term “malware” refer to?
- a) Hardware that is malfunctioning
- b) Malicious software designed to harm
- c) Software for managing files
- d) A type of programming language
Answer: b) Malicious software designed to harm
- Which of the following is not a type of software testing?
- a) Unit testing
- b) Integration testing
- c) System testing
- d) Copy testing
Answer: d) Copy testing
- What is the main purpose of a digital signature?
- a) To increase file size
- b) To verify the authenticity of a message
- c) To enhance graphics
- d) To compress files
Answer: b) To verify the authenticity of a message
- Which of the following devices is primarily used for input?
- a) Monitor
- b) Keyboard
- c) Printer
- d) Projector
Answer: b) Keyboard
- What does HTTP stand for?
- a) Hypertext Transfer Protocol
- b) Hyperlink Transfer Protocol
- c) Hypertext Transmission Protocol
- d) Hypertext Technical Protocol
Answer: a) Hypertext Transfer Protocol
- Which programming language is widely used for web server-side development?
- a) C++
- b) PHP
- c) Swift
- d) Assembly
Answer: b) PHP
- What does SSD stand for?
- a) Solid State Drive
- b) Simple State Drive
- c) Secure State Drive
- d) Single State Drive
Answer: a) Solid State Drive
- What is the function of a search engine?
- a) To manage files
- b) To search for information on the internet
- c) To create websites
- d) To protect against malware
Answer: b) To search for information on the internet
- Which of the following is a common file format for video files?
- a) .mp4
- b) .txt
- c) .jpg
- d) .doc
Answer: a) .mp4
- What does the acronym VPN stand for?
- a) Virtual Private Network
- b) Visual Personal Network
- c) Virtual Public Network
- d) Virtual Protected Network
Answer: a) Virtual Private Network
- Which of the following is a type of network cable?
- a) USB
- b) HDMI
- c) Ethernet
- d) VGA
Answer: c) Ethernet
- What is the purpose of a socket in networking?
- a) To store data
- b) To connect hardware
- c) To provide a communication endpoint
- d) To manage power
Answer: c) To provide a communication endpoint
- What does the term “phishing” refer to?
- a) A type of computer virus
- b) Attempting to acquire sensitive information by deception
- c) A method of data backup
- d) A programming error
Answer: b) Attempting to acquire sensitive information by deception
- Which of the following is not a web server software?
- a) Apache
- b) Nginx
- c) MySQL
- d) Microsoft IIS
Answer: c) MySQL
- What is a data packet?
- a) A software application
- b) A unit of data sent over a network
- c) A hardware component
- d) A type of virus
Answer: b) A unit of data sent over a network
- Which of the following is a type of cloud service?
- a) IaaS
- b) TaaS
- c) DaaS
- d) HaaS
Answer: a) IaaS
- What does the acronym API stand for?
- a) Application Programming Interface
- b) Advanced Programming Interface
- c) Application Protocol Interface
- d) Application Program Interface
Answer: a) Application Programming Interface
- Which of the following is an example of a social media platform?
- a) Microsoft Word
- b) Facebook
- c) Adobe Illustrator
- d) Google Drive
Answer: b) Facebook
- What is a common use for a QR code?
- a) To increase file size
- b) To store data in a machine-readable format
- c) To compress files
- d) To execute code
Answer: b) To store data in a machine-readable format
- What is the primary function of a network switch?
- a) To route data between different networks
- b) To connect devices within the same network
- c) To protect against cyber threats
- d) To store data
Answer: b) To connect devices within the same network
- Which of the following is a commonly used markup language?
- a) Python
- b) HTML
- c) C++
- d) Java
Answer: b) HTML
- What is the purpose of a keyboard shortcut?
- a) To increase typing speed
- b) To perform tasks quickly using keys
- c) To create documents
- d) To enhance graphics
Answer: b) To perform tasks quickly using keys
- What does the term “open-source software” mean?
- a) Software that is freely available for use and modification
- b) Software that requires a purchase
- c) Software that is only available in specific regions
- d) Software that is installed on a single device
Answer: a) Software that is freely available for use and modification
- Which of the following is a data structure?
- a) Array
- b) Variable
- c) Function
- d) Loop
Answer: a) Array
- What is the primary function of an operating system’s kernel?
- a) To manage hardware resources
- b) To run applications
- c) To protect against malware
- d) To display graphics
Answer: a) To manage hardware resources
- Which of the following is a characteristic of SSDs compared to HDDs?
- a) Slower read/write speeds
- b) Mechanical parts
- c) Greater durability
- d) Lower cost per GB
Answer: c) Greater durability
- What is the purpose of the Command Prompt in Windows?
- a) To manage files graphically
- b) To execute commands using text input
- c) To create documents
- d) To enhance graphics
Answer: b) To execute commands using text input
- Which of the following protocols is used for secure data transmission?
- a) HTTP
- b) FTP
- c) HTTPS
- d) SMTP
Answer: c) HTTPS
- What is the primary role of an operating system?
- a) To run applications
- b) To manage hardware and software resources
- c) To create documents
- d) To perform calculations
Answer: b) To manage hardware and software resources
- Which of the following is an example of an input/output device?
- a) Monitor
- b) Keyboard
- c) Printer
- d) Both b and c
Answer: d) Both b and c
- What does the acronym DOS stand for?
- a) Disk Operating System
- b) Data Operating System
- c) Digital Operating System
- d) Distributed Operating System
Answer: a) Disk Operating System
- Which of the following is a type of website hosting?
- a) Shared hosting
- b) Local hosting
- c) Temporary hosting
- d) Direct hosting
Answer: a) Shared hosting
- What is the main purpose of a router?
- a) To connect multiple devices to the internet
- b) To process data
- c) To manage power supply
- d) To store data
Answer: a) To connect multiple devices to the internet
- Which of the following is a characteristic of virtual memory?
- a) It is slower than physical memory
- b) It increases the amount of physical memory
- c) It requires more hardware
- d) It has a fixed size
Answer: a) It is slower than physical memory
- What is the primary function of a web server?
- a) To store and manage files
- b) To host websites and deliver web pages
- c) To protect against cyber threats
- d) To create applications
Answer: b) To host websites and deliver web pages
- Which of the following is a common method of data backup?
- a) Cloud backup
- b) USB storage
- c) External hard drive
- d) All of the above
Answer: d) All of the above
- What does the acronym SQL stand for? – a) Structured Query Language – b) Standard Query Language – c) Simple Query Language – d) Secure Query Language
Answer: a) Structured Query Language
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