Top 50 Computer Questions and Answer MCQ for Competitive Exams
- Who is known as the father of computers?
- a) James Gosling
- b) Charles Babbage
- c) Dennis Ritchie
- d) Bjarne Stroustrup
- Answer: b) Charles Babbage
- What does CPU stand for?
- a) Computer Processing Unit
- b) Computer Principle Unit
- c) Central Processing Unit
- d) Control Processing Unit
- Answer: c) Central Processing Unit
- Which of the following is an input device?
- a) Monitor
- b) Keyboard
- c) Printer
- d) Speaker
- Answer: b) Keyboard
- What is the main function of the ALU?
- a) Control Unit Operations
- b) Arithmetic and Logical Operations
- c) Data Storage
- d) Data Transfer
- Answer: b) Arithmetic and Logical Operations
- Which of the following is a non-volatile memory?
- a) RAM
- b) Hard Disk
- c) Cache
- d) ROM
- Answer: d) ROM
- What does HTTP stand for?
- a) Hyper Text Transfer Protocol
- b) Hyper Transfer Text Protocol
- c) Hyper Text Transmission Protocol
- d) Hyper Transfer Transmission Protocol
- Answer: a) Hyper Text Transfer Protocol
- Which language is directly understood by the computer?
- a) C++
- b) Assembly Language
- c) Machine Language
- d) Java
- Answer: c) Machine Language
- What is the main purpose of an antivirus program?
- a) Speed up the computer
- b) Detect and remove viruses
- c) Manage files
- d) Enhance graphics
- Answer: b) Detect and remove viruses
- Which of the following is considered the ‘brain’ of the computer?
- a) Hard Drive
- b) Motherboard
- c) CPU
- d) RAM
- Answer: c) CPU
- What is the smallest unit of data in a computer?
- a) Bit
- b) Byte
- c) Kilobyte
- d) Megabyte
- Answer: a) Bit
- Which of the following is an example of system software?
- a) Microsoft Word
- b) Adobe Photoshop
- c) Windows OS
- d) Google Chrome
- Answer: c) Windows OS
- What does RAM stand for?
- a) Random Access Memory
- b) Read Access Memory
- c) Rapid Access Memory
- d) Readily Available Memory
- Answer: a) Random Access Memory
- Which of the following is used to connect to the Internet?
- a) Router
- b) Scanner
- c) Printer
- d) Keyboard
- Answer: a) Router
- What is the full form of USB?
- a) Universal Serial Bus
- b) Universal System Bus
- c) Unique Serial Bus
- d) Uniform System Bus
- Answer: a) Universal Serial Bus
- Which of the following is a programming language?
- a) HTML
- b) HTTP
- c) FTP
- d) SMTP
- Answer: a) HTML
- What does GUI stand for?
- a) Graphical User Interface
- b) General User Interface
- c) Graphical Utility Interface
- d) General Utility Interface
- Answer: a) Graphical User Interface
- Which device is used to store data permanently?
- a) RAM
- b) ROM
- c) Hard Disk
- d) Cache
- Answer: c) Hard Disk
- Which of the following is not an operating system?
- a) Windows
- b) Linux
- c) Oracle
- d) MacOS
- Answer: c) Oracle
- What is the shortcut key for copying selected text?
- a) Ctrl + X
- b) Ctrl + C
- c) Ctrl + V
- d) Ctrl + Z
- Answer: b) Ctrl + C
- Which of the following is a type of network?
- a) LAN
- b) WAN
- c) MAN
- d) All of the above
- Answer: d) All of the above
- Which of the following is a web browser?
- a) Microsoft Excel
- b) Mozilla Firefox
- c) Adobe Acrobat
- d) Microsoft Word
- Answer: b) Mozilla Firefox
- What does PDF stand for?
- a) Portable Document Format
- b) Printable Document Format
- c) Public Document Format
- d) Personal Document Format
- Answer: a) Portable Document Format
- Which of the following is an example of an email protocol?
- a) HTTP
- b) FTP
- c) SMTP
- d) HTML
- Answer: c) SMTP
- What is the main function of the BIOS?
- a) To manage the computer’s memory
- b) To initialize and test the system hardware components
- c) To provide a user interface
- d) To manage network connections
- Answer: b) To initialize and test the system hardware components
- Which of the following is a type of malware?
- a) Virus
- b) Worm
- c) Trojan Horse
- d) All of the above
- Answer: d) All of the above
- What does URL stand for?
- a) Uniform Resource Locator
- b) Universal Resource Locator
- c) Uniform Retrieval Locator
- d) Universal Retrieval Locator
- Answer: a) Uniform Resource Locator
- Which of the following is a storage device?
- a) Monitor
- b) Mouse
- c) Hard Drive
- d) Keyboard
- Answer: c) Hard Drive
- What is the function of a firewall?
- a) To protect against unauthorized access
- b) To speed up the computer
- c) To manage files
- d) To enhance graphics
- Answer: a) To protect against unauthorized access
- Which of the following is an example of an output device?
- a) Scanner
- b) Keyboard
- c) Monitor
- d) Mouse
- Answer: c) Monitor
- What is the main purpose of an operating system?
- a) To manage computer hardware and software resources
- b) To perform calculations
- c) To create documents
- d) To browse the internet
- Answer: a) To manage computer hardware and software resources
- Which of the following is a popular programming language for web development?
- a) Python
- b) Java Script
- c) C++
- d) COBOL
- Answer: b) JavaScript
- What does SSD stand for?
- a) Solid State Drive
- b) Super Speed Drive
- c) Secure Storage Device
- d) System Storage Device
- Answer: a) Solid State Drive
- Which of the following is an example of an open-source operating system?
- a) Windows
- b) MacOS
- c) Linux
- d) iOS
- Answer: c) Linux
- What is the primary purpose of a database?
- a) To store and manage data
- b) To perform calculations
- c) To create graphics
- d) To browse the internet
- Answer: a) To store and manage data
- Which of the following is a cloud storage service?
- a) Dropbox
- b) Microsoft Word
- c) Adobe Photoshop
- d) VLC Media Player
- Answer: a) Dropbox
- What does IP stand for in IP address?
- a) Internet Protocol
- b) Internal Protocol
- c) Internet Program
- d) Internal Program
- Answer: a) Internet Protocol
- Which of the following is a type of software license that allows users to run the software for free?
- a) Shareware
- b) Freeware
- c) Commercial
- d) Proprietary
- Answer: b) Freeware
- What is the main function of a compiler?
- a) To execute programs
- b) To translate high-level language into machine code
- c) To manage memory
- d) To connect to the internet
- Answer: b) To translate high-level language into machine code
- Which of the following is a type of computer network?
- a) PAN
- b) LAN
- c) WAN
- d) All of the above
- Answer: d) All of the above
- What does DNS stand for?
- a) Domain Name System
- b) Digital Network Service
- c) Data Network System
- d) Domain Network Service
- Answer: a) Domain Name System
- Which of the following is a type of memory that is volatile?
- a) ROM
- b) Hard Disk
- c) RAM
- d) SSD
- Answer: c) RAM
- What does HTML stand for?
- a) Hyper Text Markup Language
- b) Hyper Text Machine Language
- c) High Text Markup Language
- d) High Text Machine Language
- Answer: a) Hyper Text Markup Language
- Which of the following is a search engine?
- a) Google
- b) Microsoft Word
- c) Windows
- d) Excel
- Answer: a) Google
- What is the main function of a router?
- a) To store data
- b) To connect different networks
- c) To display images
- d) To manage files
- Answer: b) To connect different networks
- Which of the following is a popular social media platform?
- a) Windows
- b) Linux
- c) Facebook
- d) Oracle
- Answer: c) Facebook
- What does VPN stand for?
- a) Virtual Private Network
- b) Virtual Public Network
- c) Virtual Protected Network
- d) Virtual Personal Network
- Answer: a) Virtual Private Network
- Which of the following is an example of a spreadsheet software?
- a) Microsoft Word
- b) Microsoft Excel
- c) Adobe Photoshop
- d) Mozilla Firefox
- Answer: b) Microsoft Excel
- What is the main purpose of a database management system (DBMS)?
- a) To create documents
- b) To manage data
- c) To browse the internet
- d) To edit images
- Answer: b) To manage data
- Which of the following is a type of malicious software?
- a) Antivirus
- b) Firewall
- c) Spyware
- d) Router
- Answer: c) Spyware
- What does SQL stand for?
- a) Structured Query Language
- b) Simple Query Language
- c) Standard Query Language
- d) Sequential Query Language
- Answer: a) Structured Query Language