Computers have become an essential part of our everyday lives. To keep up with this, many competitive exams now test basic computer knowledge to check how well candidates understand computers and their uses. Being familiar with these basics can help you score better and avoid losing marks.
Knowing how computers work also makes daily tasks much easier. If you want to improve your computer skills, practicing these computer GK questions is a smart way to get started.
1. What does CPU stand for?
A) Central Processing Unit
B) Central Power Unit
C) Control Processing Unit
D) Central Programming Unit
Answer: A) Central Processing Unit
Explanation: The CPU is the “brain” of the computer. It processes instructions and performs calculations to run programs and execute tasks.
2. What is the main page of a website called?
A) Landing Page
B) Home Page
C) Index Page
D) Dashboard
Answer: B) Home Page
Explanation: The home page is the starting point or main page of a website, where users typically land first and navigate to other sections.
3. What does RAM stand for?
A) Random Access Memory
B) Read Access Memory
C) Ready Access Module
D) Run Access Memory
Answer: A) Random Access Memory
Explanation: RAM is a type of computer memory used for temporary storage while the system is running. It allows quick access to data and speeds up processes.
4. What does ROM stand for?
A) Random Only Memory
B) Read-Only Memory
C) Run-On Memory
D) Ready Open Memory
Answer: B) Read-Only Memory
Explanation: ROM is a type of memory that contains permanent data and instructions needed for a computer to start up.
5. What is the full form of HTTP?
A) HyperText Transfer Protocol
B) Hyper Transfer Text Protocol
C) HyperText Transmission Protocol
D) High Text Transfer Protocol
Answer: A) HyperText Transfer Protocol
Explanation: HTTP is the protocol used to transfer data over the web. It enables communication between web browsers and servers.
6. What does URL stand for?
A) Universal Resource Locator
B) Uniform Resource Locator
C) Uniform Registry Locator
D) Universal Registry Locator
Answer: B) Uniform Resource Locator
Explanation: A URL is the address of a webpage on the internet, like “https://www.example.com.”
7. What is an operating system?
A) Hardware that runs software
B) Software that manages hardware and software
C) Software to browse the web
D) A computer’s memory unit
Answer: B) Software that manages hardware and software
Explanation: The operating system is essential software that controls the hardware and provides services for other software.
8. What does WWW stand for?
A) World Wide Web
B) Wide Web World
C) Web Wide World
D) Wide World Web
Answer: A) World Wide Web
Explanation: WWW refers to the system of interconnected documents and resources on the internet that are accessed via web browsers.
9. What is a web browser?
A) A tool for editing documents
B) Software to access the internet
C) A program for running files
D) Software for emailing
Answer: B) Software to access the internet
Explanation: A web browser allows users to view and interact with web pages on the internet, such as Chrome or Firefox.
10. What is the brain of the computer?
A) GPU
B) Hard Drive
C) CPU
D) RAM
Answer: C) CPU
Explanation: The CPU (Central Processing Unit) is called the brain because it performs all the calculations and processes necessary to run a computer.
Computer GK Questions
11. What is a computer virus?
A) A helpful program
B) A computer file
C) Malicious software that harms computers
D) An antivirus tool
Answer: C) Malicious software that harms computers
Explanation: A virus is harmful software designed to damage or disrupt systems or steal information.
12. What is the main function of a printer?
A) To display documents
B) To produce hard copies of documents
C) To store digital files
D) To scan documents
Answer: B) To produce hard copies of documents
Explanation: A printer converts digital documents into physical copies on paper.
13. What is software?
A) A physical device
B) Programs and operating information used by a computer
C) A type of hardware
D) A file storage unit
Answer: B) Programs and operating information used by a computer
Explanation: Software includes all the programs and systems that tell the computer what to do.
14. What does PDF stand for?
A) Portable Document Format
B) Personal Data File
C) Professional Document Format
D) Printed Data File
Answer: A) Portable Document Format
Explanation: PDFs are file formats that preserve document formatting and can be viewed on different devices.
15. What is a byte?
A) A unit of time
B) A unit of length
C) A unit of digital information
D) A type of software
Answer: C) A unit of digital information
Explanation: A byte is a standard unit of digital information, usually containing 8 bits.
16. What is the full form of USB?
A) Universal System Bus
B) Universal Serial Bus
C) United Serial Bus
D) Universal Storage Bus
Answer: B) Universal Serial Bus
Explanation: USB is a standard connection type for devices like keyboards, drives, and printers.
17. What does GUI stand for?
A) General User Interface
B) Graphical User Interface
C) Global User Interface
D) Generic User Interface
Answer: B) Graphical User Interface
Explanation: A GUI allows users to interact with computers through visuals like icons and buttons instead of text commands.
18. What is an IP address?
A) Internet Program address
B) A unique address for a device on a network
C) A type of memory
D) A computer model
Answer: B) A unique address for a device on a network
Explanation: An IP address identifies devices on a network, like a home address for a computer.
19. What does BIOS stand for?
A) Basic Input/Output System
B) Binary Input/Output System
C) Basic Internet/Operating System
D) Base Internal/Output Setup
Answer: A) Basic Input/Output System
Explanation: BIOS is the firmware that initializes hardware during the startup process.
20. What is a hard drive?
A) A device to store data
B) A processor
C) An output device
D) A software application
Answer: A) A device to store data
Explanation: The hard drive is where data, including files and programs, is stored long-term.
Computer GK Questions and Answers
21. What is the function of a mouse?
A) To type text
B) To point and click on items on the screen
C) To process data
D) To display images
Answer: B) To point and click on items on the screen
Explanation: The mouse is an input device used to interact with items on a computer screen by pointing, clicking, and dragging.
22. What is an email?
A) Electronic mail
B) A storage device
C) A web browser
D) An operating system
Answer: A) Electronic mail
Explanation: Email is a digital method for sending and receiving messages over the internet.
23. What does LAN stand for?
A) Local Area Network
B) Large Access Network
C) Long Area Node
D) Logical Application Network
Answer: A) Local Area Network
Explanation: A LAN is a network that connects computers within a limited area, such as an office or home.
24. What does WAN stand for?
A) Web Access Node
B) Wide Area Network
C) Wireless Access Network
D) Wide Application Node
Answer: B) Wide Area Network
Explanation: A WAN connects computers across large geographical areas, such as cities or countries, often using the internet.
25. What is the purpose of a firewall?
A) To display webpages
B) To protect a network from unauthorized access
C) To speed up a computer
D) To store data
Answer: B) To protect a network from unauthorized access
Explanation: A firewall is a security system that blocks or permits data based on predefined security rules to protect against cyber threats.
26. What is a pixel?
A) The largest part of an image
B) The smallest unit of a digital image
C) A type of file format
D) A software application
Answer: B) The smallest unit of a digital image
Explanation: A pixel is a tiny dot of color that, when combined with others, forms a digital image on a screen.
27. What does HTML stand for?
A) HyperText Markup Language
B) HyperTool Media Language
C) HyperText Media Layout
D) HighText Markup Layout
Answer: A) HyperText Markup Language
Explanation: HTML is the standard language used to create and design webpages.
28. What is a modem?
A) A device that stores files
B) A device that connects a computer to the internet
C) A type of software
D) A power supply unit
Answer: B) A device that connects a computer to the internet
Explanation: A modem translates digital signals to analog signals (and vice versa) for internet access.
29. What is the use of a spreadsheet?
A) To browse the web
B) To organize and analyze data in tabular form
C) To create presentations
D) To store photos
Answer: B) To organize and analyze data in tabular form
Explanation: Spreadsheets are used for managing and calculating data using rows, columns, and formulas.
30. What is a network?
A) A group of interconnected computers
B) A storage device
C) A web browser
D) A data processing tool
Answer: A) A group of interconnected computers
Explanation: A network connects multiple computers to share resources and communicate with each other.
Computer MCQs with Answers
31. What does VPN stand for?
A) Virtual Private Network
B) Virtual Public Node
C) Virtual Processing Network
D) Verified Private Network
Answer: A) Virtual Private Network
Explanation: A VPN creates a secure connection between a user and a network, protecting data from external threats.
32. What is cloud computing?
A) A type of physical storage
B) Storing and accessing data over the internet
C) A web design tool
D) A programming language
Answer: B) Storing and accessing data over the internet
Explanation: Cloud computing allows users to store and access files, software, and data on remote servers instead of local devices.
33. What is malware?
A) Software to browse the internet
B) Malicious software designed to harm a computer
C) A file storage system
D) A type of hardware
Answer: B) Malicious software designed to harm a computer
Explanation: Malware is harmful software such as viruses, worms, or spyware that damages systems or steals information.
34. What is the function of a router?
A) To store data
B) To direct data between networks
C) To protect against viruses
D) To display webpages
Answer: B) To direct data between networks
Explanation: A router directs data packets between different networks, enabling devices to connect to the internet.
35. What does AI stand for?
A) Advanced Internet
B) Artificial Intelligence
C) Automatic Integration
D) Applied Information
Answer: B) Artificial Intelligence
Explanation: AI refers to systems or machines that mimic human intelligence to perform tasks and improve over time with data.
36. What is an algorithm?
A) A computer program
B) A hardware component
C) A set of steps to solve a problem
D) A network system
Answer: C) A set of steps to solve a problem
Explanation: An algorithm is a series of instructions or rules used to perform a specific task or solve a problem.
37. What is phishing?
A) A scam to steal personal information via email
B) A type of web browser
C) A type of antivirus software
D) A method for transferring files
Answer: A) A scam to steal personal information via email
Explanation: Phishing is a cybercrime where scammers trick users into revealing sensitive information like passwords or credit card details through fraudulent emails or websites.
38. What does SSD stand for?
A) Secure Storage Device
B) Solid State Drive
C) Standard Software Data
D) Simple System Disk
Answer: B) Solid State Drive
Explanation: An SSD is a fast storage device that uses flash memory, unlike traditional hard drives with spinning disks.
39. What is Bluetooth?
A) A type of computer
B) A technology for wireless communication
C) A network cable
D) A web browser
Answer: B) A technology for wireless communication
Explanation: Bluetooth enables devices to connect and share data wirelessly over short distances, such as between phones and headphones.
40. What is a hyperlink?
A) A text file
B) A wireless signal
C) A link from one webpage to another
D) A programming language
Answer: C) A link from one webpage to another
Explanation: A hyperlink is a clickable element (text or image) that takes you to another webpage or document when clicked.
Computer Questions with Answers
41. What is bandwidth?
A) The length of a cable
B) The number of devices on a network
C) The maximum data transfer rate of a network
D) A type of processor
Answer: C) The maximum data transfer rate of a network
Explanation: Bandwidth measures how much data can be transmitted over a network in a given time, typically in Mbps.
42. What is the full form of SMS?
A) Secure Message System
B) Short Message Service
C) Simple Messaging Software
D) Standard Mail Service
Answer: B) Short Message Service
Explanation: SMS is a text messaging service that allows sending short messages over mobile networks.
43. What is a domain name?
A) A physical storage device
B) The address of a website
C) A type of software
D) A coding language
Answer: B) The address of a website
Explanation: A domain name is the unique name used to identify a website, such as example.com.
44. What does SQL stand for?
A) Secure Query Language
B) Structured Query Language
C) Software Query List
D) Simple Query Logic
Answer: B) Structured Query Language
Explanation: SQL is a programming language used to manage and query data in relational databases.
45. What is an app?
A) A computer part
B) A type of printer
C) Application software
D) A storage device
Answer: C) Application software
Explanation: An app is a program or software designed to perform specific tasks, like games or tools on smartphones.
46. What is the full form of ISP?
A) Internet Service Provider
B) International Security Protocol
C) Information Storage Platform
D) Integrated System Processor
Answer: A) Internet Service Provider
Explanation: An ISP is a company that provides access to the internet, like Airtel, Jio, or BSNL.
47. What is encryption?
A) Creating backup files
B) Converting data into a code for security
C) Compressing files
D) Deleting data permanently
Answer: B) Converting data into a code for security
Explanation: Encryption makes data unreadable to unauthorized users, protecting sensitive information during transmission.
48. What is a bot?
A) A type of virus
B) Software that performs automated tasks
C) A type of email
D) A piece of hardware
Answer: B) Software that performs automated tasks
Explanation: A bot is a program designed to automate repetitive tasks, such as responding to queries or crawling websites.
49. What does FTP stand for?
A) File Transmission Program
B) File Transfer Protocol
C) Fast Text Processor
D) Flexible Transfer Package
Answer: B) File Transfer Protocol
Explanation: FTP is a standard network protocol used to transfer files between a client and a server.
50. What is a cookie in web terms?
A) A type of virus
B) Data stored by a website on a user’s computer
C) A security software
D) A type of browser extension
Answer: B) Data stored by a website on a user’s computer
Explanation: Cookies help websites remember user preferences, login information, and browsing history for a better experience.
Computer GK in English
51. What is a search engine?
A) A tool to find information on the internet
B) A type of computer
C) A hardware component
D) A file format
Answer: A) A tool to find information on the internet
Explanation: Search engines like Google or Bing help users find information by entering keywords.
52. What does DNS stand for?
A) Data Network System
B) Domain Name System
C) Digital Network Service
D) Dynamic Name Source
Answer: B) Domain Name System
Explanation: DNS translates domain names (like example.com) into IP addresses so computers can access websites.
53. What is e-commerce?
A) A coding technique
B) A type of data storage
C) Buying and selling goods online
D) A network security measure
Answer: C) Buying and selling goods online
Explanation: E-commerce involves transactions like shopping or banking done through the internet.
54. What is spyware?
A) Software that secretly collects user information
B) A tool to protect against malware
C) A type of email
D) A programming language
Answer: A) Software that secretly collects user information
Explanation: Spyware tracks a user’s online activities and gathers information without their consent, often for malicious purposes.
55. What is a blog?
A) A regularly updated website or web page
B) A type of hardware
C) A programming language
D) A web browser
Answer: A) A regularly updated website or web page
Explanation: Blogs are online platforms where people share thoughts, information, or updates, usually on specific topics.
56. What is the full form of JPEG?
A) Joint Photographic Experts Group
B) Java Picture Encoding Graph
C) Jump Picture Editing Graphics
D) Joint Pixel Export Group
Answer: A) Joint Photographic Experts Group
Explanation: JPEG is a common file format used for compressing and saving digital images.
57. What is the full form of GIF?
A) Graphic Image Format
B) Graphics Interchange Format
C) General Image File
D) Graphics Input Function
Answer: B) Graphics Interchange Format
Explanation: GIF is an image format commonly used for animations and short moving images.
58. What does XML stand for?
A) Xtra Managed Language
B) eXtensible Markup Language
C) Xclusive Management Logic
D) Xtreme Marking Language
Answer: B) eXtensible Markup Language
Explanation: XML is a markup language designed to store and transport data in a structured and readable format.
59. What is a QR code?
A) Quality Response code
B) Quick Reference code
C) Quick Response code
D) Query Reading code
Answer: C) Quick Response code
Explanation: A QR code is a two-dimensional barcode that stores information and can be scanned by a device like a smartphone.
60. What is the full form of API?
A) Application Programming Interface
B) Automated Process Integration
C) Advanced Programming Instructions
D) Application Processor Input
Answer: A) Application Programming Interface
Explanation: An API allows software applications to communicate with each other by defining methods and data exchange formats.
Computer GK Questions
61. What is a cache?
A) A type of CPU
B) A storage area for temporary data
C) A type of antivirus software
D) A coding tool
Answer: B) A storage area for temporary data
Explanation: Cache stores frequently accessed data to make future requests faster, improving system performance.
62 What is the function of a scanner?
A) To print documents
B) To scan viruses
C) To convert physical documents into digital format
D) To compress files
Answer: C) To convert physical documents into digital format
Explanation: A scanner reads physical documents, like papers or photos, and creates digital copies stored on a computer.
63. What is a graphics card?
A) Hardware that manages memory
B) Hardware that renders images
C) A storage device
D) A type of software
Answer: B) Hardware that renders images
Explanation: A graphics card is responsible for creating and displaying images, videos, and animations on a computer screen.
64. What is a database?
A) A collection of coding tools
B) Organized collection of data
C) A type of operating system
D) An internet browser
Answer: B) Organized collection of data
Explanation: A database stores structured data that can be easily accessed, managed, and updated using software tools.
65. What is VoIP?
A) Video over Internet Process
B) Voice over Internet Protocol
C) Virtual Online Interface Program
D) Visual Output Interface Path
Answer: B) Voice over Internet Protocol
Explanation: VoIP allows voice calls to be made over the internet instead of traditional telephone networks.
66. What is the function of a motherboard?
A) It holds and allows communication between computer components
B) It powers the CPU
C) It provides internet access
D) It stores software programs
Answer: A) It holds and allows communication between computer components
Explanation: The motherboard is the main circuit board that connects and facilitates communication between the CPU, memory, and other hardware.
67. What is a chatbot?
A) Software that simulates conversation with users
B) A type of gaming application
C) A database management tool
D) A graphic editing software
Answer: A) Software that simulates conversation with users
Explanation: A chatbot uses AI to interact with users, answering questions or performing tasks based on user inputs.
68. What is the use of Excel?
A) To write and send emails
B) To play games
C) To create spreadsheets for data analysis
D) To design graphics
Answer: C) To create spreadsheets for data analysis
Explanation: Excel is used to organize, analyze, and visualize data in rows and columns, making it useful for tasks like budgeting or calculations.
