130 Technology & AI Quiz Questions & Answers

Below are 130 technology & ai quiz questions with the correct answer and a short explanation for each. Use them to revise, host a quiz night, or prepare for competitions — then challenge yourself with the timed, interactive version on QuizOxa.

Technology & AI Quiz Questions and Answers

1. Q1. What does 'CPU' stand for?

   ✅ Answer: Central Processing Unit

   💡 CPU stands for Central Processing Unit, the primary chip that executes instructions.

2. Q2. What does 'www' stand for?

   ✅ Answer: World Wide Web

   💡 WWW stands for World Wide Web, the global system of interconnected web pages.

3. Q3. What does 'Wi-Fi' allow you to do?

   ✅ Answer: Connect to internet wirelessly

   💡 Wi-Fi allows devices to connect to the internet and local networks without physical cables.

4. Q4. What is the most popular operating system for smartphones?

   ✅ Answer: Android

   💡 Android, developed by Google, powers the majority of the world's smartphones.

5. Q5. What does 'USB' stand for?

   ✅ Answer: Universal Serial Bus

   💡 USB stands for Universal Serial Bus, a standard for connecting devices to computers.

6. Q6. Which company created the iPhone?

   ✅ Answer: Apple

   💡 Apple Inc., co-founded by Steve Jobs, created and launched the iPhone in 2007.

7. Q7. What does 'RAM' stand for?

   ✅ Answer: Random Access Memory

   💡 RAM stands for Random Access Memory, temporary memory used while a computer is running.

8. Q8. What language is primarily used for web pages?

   ✅ Answer: HTML

   💡 HTML (HyperText Markup Language) is the standard language for creating web pages.

9. Q9. What does 'AI' stand for?

   ✅ Answer: Artificial Intelligence

   💡 AI stands for Artificial Intelligence, the simulation of human intelligence by machines.

10. Q10. Which company owns YouTube?

    ✅ Answer: Google

    💡 Google acquired YouTube in 2006 for $1.65 billion.

11. Q11. What is the function of a 'firewall' in computing?

    ✅ Answer: Block unauthorized access

    💡 A firewall monitors and controls network traffic to block unauthorized or harmful access.

12. Q12. What does 'GPS' stand for?

    ✅ Answer: Global Positioning System

    💡 GPS stands for Global Positioning System, a satellite-based navigation system.

13. Q13. What is 'the cloud' in technology?

    ✅ Answer: Remote internet-based storage and services

    💡 The cloud refers to internet-based computing where data and programs are stored on remote servers.

14. Q14. Which programming language is known as the language of the web's interactivity?

    ✅ Answer: JavaScript

    💡 JavaScript is the primary language used to add interactivity and dynamic content to websites.

15. Q15. What does 'URL' stand for?

    ✅ Answer: Uniform Resource Locator

    💡 URL stands for Uniform Resource Locator, the address of a resource on the internet.

16. Q16. What is a 'pixel'?

    ✅ Answer: The smallest unit of a digital image

    💡 A pixel is the smallest individual element of a digital image or screen display.

17. Q17. Which company developed the Windows operating system?

    ✅ Answer: Microsoft

    💡 Microsoft developed Windows, first released in 1985.

18. Q18. What does 'HTTP' stand for?

    ✅ Answer: HyperText Transfer Protocol

    💡 HTTP stands for HyperText Transfer Protocol, the foundation of data communication on the web.

19. Q19. What is 'open source' software?

    ✅ Answer: Software with publicly available code

    💡 Open source software has its source code publicly available for anyone to view, modify, and distribute.

20. Q20. What is a 'byte' in computing?

    ✅ Answer: 8 bits

    💡 1 byte = 8 bits. It is the basic unit of digital information storage.

21. Q21. What does 'VPN' stand for?

    ✅ Answer: Virtual Private Network

    💡 VPN stands for Virtual Private Network, it encrypts your internet connection for privacy.

22. Q22. What is 'machine learning'?

    ✅ Answer: AI systems learning from data

    💡 Machine learning is a branch of AI where systems learn from data to improve their performance.

23. Q23. What is the binary number system based on?

    ✅ Answer: 2 digits (0 and 1)

    💡 Binary uses only 0 and 1, the foundation of all digital computing.

24. Q24. Which social media platform uses a 'tweet'?

    ✅ Answer: Twitter/X

    💡 Twitter (now rebranded as X) uses the term 'tweet' for posts on its platform.

25. Q25. What does 'SSD' stand for?

    ✅ Answer: Solid State Drive

    💡 SSD stands for Solid State Drive, a faster storage device than traditional hard disk drives.

26. Q26. Who co-founded Microsoft?

    ✅ Answer: Bill Gates & Paul Allen

    💡 Microsoft was co-founded by Bill Gates and Paul Allen in 1975.

27. Q27. What does 'API' stand for?

    ✅ Answer: Application Programming Interface

    💡 API stands for Application Programming Interface, a way for software programs to communicate.

28. Q28. What is 'phishing' in cybersecurity?

    ✅ Answer: Tricking users to reveal sensitive info

    💡 Phishing is a cyberattack where criminals trick users into revealing passwords or personal information.

29. Q29. Which company created the Android operating system?

    ✅ Answer: Google

    💡 Android was developed by Android Inc. and acquired by Google in 2005.

30. Q30. What is a 'domain name' on the internet?

    ✅ Answer: A human-readable website address

    💡 A domain name is the readable address of a website, like 'google.com'.

31. Q31. What does 'IoT' stand for?

    ✅ Answer: Internet of Things

    💡 IoT stands for Internet of Things, everyday objects connected to the internet to share data.

32. Q32. What programming language is most used for data science?

    ✅ Answer: Python

    💡 Python is the most popular language for data science due to its simplicity and powerful libraries.

33. Q33. What is 'blockchain' technology primarily known for?

    ✅ Answer: Secure, decentralized record-keeping

    💡 Blockchain is a distributed ledger technology providing secure, transparent, and tamper-proof records.

34. Q34. What does 'HTTPS' extra 'S' stand for?

    ✅ Answer: Secure

    💡 The 'S' in HTTPS stands for Secure, it means the connection is encrypted using SSL/TLS.

35. Q35. What is 'virtual reality' (VR)?

    ✅ Answer: Immersive computer-simulated experience

    💡 VR creates immersive, computer-generated environments that users can interact with.

36. Q36. Which company developed the ChatGPT AI?

    ✅ Answer: OpenAI

    💡 ChatGPT was developed by OpenAI, founded in 2015.

37. Q37. What is '4G' in mobile networks?

    ✅ Answer: 4th Generation mobile network

    💡 4G refers to the 4th Generation of mobile network technology, significantly faster than 3G.

38. Q38. What is a 'router' used for?

    ✅ Answer: Direct internet traffic between devices

    💡 A router directs data packets between computer networks, connecting devices to the internet.

39. Q39. What language is used to style web pages?

    ✅ Answer: CSS

    💡 CSS (Cascading Style Sheets) is used to control the visual appearance of web pages.

40. Q40. What does 'GB' stand for in storage?

    ✅ Answer: Gigabyte

    💡 GB stands for Gigabyte, a unit of digital storage equal to 1,024 megabytes.

41. Q41. What is 'augmented reality' (AR)?

    ✅ Answer: Digital overlays on the real world

    💡 AR overlays digital content (images, text) onto the real world, as seen in apps like Pokémon Go.

42. Q42. What does 'SQL' stand for?

    ✅ Answer: Structured Query Language

    💡 SQL stands for Structured Query Language, used to manage and query databases.

43. Q43. Who is the CEO of Tesla and SpaceX?

    ✅ Answer: Elon Musk

    💡 Elon Musk is the CEO of both Tesla (electric vehicles) and SpaceX (space exploration).

44. Q44. What is 'encryption' in computing?

    ✅ Answer: Converting data into a coded format

    💡 Encryption converts data into a code to prevent unauthorized access.

45. Q45. What is the most visited website in the world?

    ✅ Answer: Google

    💡 Google.com consistently ranks as the most visited website globally.

46. Q46. What is 'big data'?

    ✅ Answer: Extremely large and complex data sets requiring special tools

    💡 Big data refers to massive volumes of structured and unstructured data that require advanced tools to analyze.

47. Q47. What does 'LAN' stand for?

    ✅ Answer: Local Area Network

    💡 LAN stands for Local Area Network, a network connecting devices within a limited area like a home or office.

48. Q48. Which company owns Instagram?

    ✅ Answer: Meta (Facebook)

    💡 Instagram was acquired by Facebook (now Meta) in 2012 for approximately $1 billion.

49. Q49. What is 'quantum computing'?

    ✅ Answer: Computing using quantum mechanics principles

    💡 Quantum computing uses quantum mechanical phenomena like superposition to perform computations.

50. Q50. What does 'PDF' stand for?

    ✅ Answer: Portable Document Format

    💡 PDF stands for Portable Document Format, a file format for presenting documents consistently across devices.

51. Q51. Who co-founded Microsoft with Bill Gates in 1975?

    ✅ Answer: Paul Allen

    💡 Gates and Allen were childhood friends from Seattle.

52. Q52. Which two Stanford students founded Google in 1998?

    ✅ Answer: Larry Page and Sergey Brin

    💡 Google grew out of a research project called BackRub.

53. Q53. Amazon started out selling only which product?

    ✅ Answer: Books

    💡 Jeff Bezos launched Amazon as an online bookstore from his garage in 1995.

54. Q54. In which year was Apple founded?

    ✅ Answer: 1976

    💡 Steve Jobs, Steve Wozniak and Ronald Wayne founded Apple on 1 April 1976.

55. Q55. Mark Zuckerberg launched Facebook in 2004 while a student at which university?

    ✅ Answer: Harvard

    💡 It was first called “TheFacebook” and was only open to Harvard students.

56. Q56. What was Google’s parent company renamed in 2015?

    ✅ Answer: Alphabet

    💡 Alphabet was created as a holding company for Google and its other businesses.

57. Q57. Which company did Facebook rename itself to in 2021?

    ✅ Answer: Meta

    💡 The new name reflected Mark Zuckerberg’s focus on the “metaverse”.

58. Q58. Samsung, one of the largest electronics makers, is from which country?

    ✅ Answer: South Korea

    💡 Samsung was founded in 1938 as a trading company selling dried fish and noodles.

59. Q59. Which company makes the PlayStation games console?

    ✅ Answer: Sony

    💡 The first PlayStation was released in 1994 in Japan.

60. Q60. Which entrepreneur founded SpaceX and led Tesla?

    ✅ Answer: Elon Musk

    💡 Musk founded SpaceX in 2002 and joined Tesla as an early investor and chairman in 2004.

61. Q61. Which company created the Windows operating system?

    ✅ Answer: Microsoft

    💡 Windows 1.0 was released in 1985.

62. Q62. Nintendo, maker of Mario games, started in 1889 making what?

    ✅ Answer: Playing cards

    💡 Nintendo made hanafuda playing cards in Kyoto for decades before moving into video games.

63. Q63. Which company designed the chips at the heart of the AI boom, led by Jensen Huang?

    ✅ Answer: Nvidia

    💡 Nvidia started out making graphics cards for video games in 1993.

64. Q64. YouTube was bought by which company in 2006?

    ✅ Answer: Google

    💡 Google paid 1.65 billion dollars for YouTube, just over a year after it launched.

65. Q65. Which Chinese company owns TikTok?

    ✅ Answer: ByteDance

    💡 ByteDance launched TikTok internationally in 2017; in China the app is called Douyin.

66. Q66. What was Twitter renamed in 2023 after Elon Musk bought it?

    ✅ Answer: X

    💡 Musk completed his purchase of Twitter in October 2022.

68. Q67. Which company did Steve Jobs found after leaving Apple in 1985?

    ✅ Answer: NeXT

    💡 Apple bought NeXT in 1997, bringing Jobs back; he also bought Pixar in 1986.

69. Q68. Which Taiwanese company is the world’s largest contract maker of computer chips?

    ✅ Answer: TSMC

    💡 TSMC makes chips for companies such as Apple and Nvidia.

70. Q69. Which company makes the Android operating system?

    ✅ Answer: Google

    💡 Google bought Android Inc. in 2005; the first Android phone launched in 2008.

71. Q70. Which company created the ChatGPT chatbot, released in 2022?

    ✅ Answer: OpenAI

    💡 ChatGPT reached 100 million users within about two months.

72. Q71. What was the name of the 1960s US network that became the basis of the internet?

    ✅ Answer: ARPANET

    💡 ARPANET sent its first message between two universities in 1969.

73. Q72. What does “www” stand for?

    ✅ Answer: World Wide Web

    💡 Tim Berners-Lee named it the World Wide Web in 1990.

74. Q73. What does “URL” stand for?

    ✅ Answer: Uniform Resource Locator

    💡 A URL is the address of a resource on the web.

75. Q74. Which symbol separates the user name and domain in an email address?

    ✅ Answer: @

    💡 Ray Tomlinson chose the @ symbol when he sent the first networked email in 1971.

76. Q75. What was the first video ever uploaded to YouTube called?

    ✅ Answer: Me at the zoo

    💡 Co-founder Jawed Karim uploaded the 19-second clip in April 2005.

77. Q76. Which photo-sharing app was bought by Facebook in 2012?

    ✅ Answer: Instagram

    💡 Facebook paid about one billion dollars for Instagram.

78. Q77. What was the original character limit of a tweet?

    ✅ Answer: 140

    💡 The limit was doubled to 280 characters in 2017.

79. Q78. What does “Wi-Fi” allow devices to do?

    ✅ Answer: Connect to a network wirelessly

    💡 Wi-Fi uses radio waves to connect devices to a network.

80. Q79. Which online encyclopedia, launched in 2001, can be edited by anyone?

    ✅ Answer: Wikipedia

    💡 Wikipedia has millions of articles in hundreds of languages.

81. Q80. What does “HTML” stand for?

    ✅ Answer: HyperText Markup Language

    💡 HTML describes the structure of web pages.

82. Q81. Which messaging app, bought by Facebook in 2014, is used by billions of people?

    ✅ Answer: WhatsApp

    💡 Facebook paid about 19 billion dollars for WhatsApp.

83. Q82. What is a “meme” in internet culture?

    ✅ Answer: A piece of content that spreads and is copied with variations

    💡 Biologist Richard Dawkins coined the word in 1976 for ideas that spread from person to person.

84. Q83. Which app is known for disappearing messages and a ghost logo?

    ✅ Answer: Snapchat

    💡 Snapchat launched in 2011.

85. Q84. What does “https” offer that “http” does not?

    ✅ Answer: Encryption of data between your browser and the website

    💡 The “s” stands for secure; a padlock icon shows the connection is encrypted.

86. Q85. Which company’s search engine became so dominant that its name became a verb?

    ✅ Answer: Google

    💡 “Google” was added to the Oxford English Dictionary as a verb in 2006.

87. Q86. Which professional networking site was launched in 2003?

    ✅ Answer: LinkedIn

    💡 Microsoft bought LinkedIn in 2016.

88. Q87. What is the term for a fake email that tries to trick you into revealing passwords?

    ✅ Answer: Phishing

    💡 Phishing emails often pretend to be from banks or well-known companies.

89. Q88. Which video-sharing app is famous for short vertical videos and dance trends?

    ✅ Answer: TikTok

    💡 Vine, which offered six-second videos, closed in 2017.

90. Q89. What does “IP” stand for in “IP address”?

    ✅ Answer: Internet Protocol

    💡 An IP address identifies a device on a network.

91. Q90. What does “emoji” mean in Japanese?

    ✅ Answer: Picture character

    💡 It combines e (picture) and moji (character); the resemblance to “emotion” is a coincidence.

92. Q91. Who is often called the first computer programmer?

    ✅ Answer: Ada Lovelace

    💡 In 1843 Lovelace published an algorithm for Babbage’s Analytical Engine.

93. Q92. Which British mathematician is considered a father of computer science and AI?

    ✅ Answer: Alan Turing

    💡 Turing described a universal computing machine in 1936 and proposed the Turing test in 1950.

94. Q93. What was ENIAC, completed in 1945?

    ✅ Answer: One of the first general-purpose electronic computers

    💡 ENIAC filled a large room and used about 18,000 vacuum tubes.

95. Q94. Which invention at Bell Labs in 1947 replaced vacuum tubes and made modern electronics possible?

    ✅ Answer: The transistor

    💡 John Bardeen, Walter Brattain and William Shockley won the Nobel Prize for it.

96. Q95. Grace Hopper popularised which computing term after finding a moth in a computer?

    ✅ Answer: Bug

    💡 The moth, taped into a 1947 logbook, is in the Smithsonian; “bug” was already used for faults.

97. Q96. What was the name of the first commercially successful microprocessor from Intel, released in 1971?

    ✅ Answer: Intel 4004

    💡 The 4004 was designed for a Japanese calculator company, Busicom.

98. Q97. Which company released the IBM PC in 1981?

    ✅ Answer: IBM

    💡 The IBM PC’s open design led to a huge industry of compatible “clones”.

99. Q98. What does “Moore’s law” describe?

    ✅ Answer: The number of transistors on a chip doubling about every two years

    💡 Intel co-founder Gordon Moore made the observation in 1965 and revised it in 1975.

100. Q99. Which 1984 computer popularised the graphical user interface and the mouse?

     ✅ Answer: Apple Macintosh

     💡 The Macintosh was launched with a famous “1984” TV advert during the Super Bowl.

101. Q100. What was the Colossus, built in Britain in 1943–44?

     ✅ Answer: A codebreaking computer

     💡 Colossus helped break the German Lorenz cipher at Bletchley Park.

102. Q101. What does “CPU” stand for?

     ✅ Answer: Central Processing Unit

     💡 The CPU carries out the instructions of computer programs.

103. Q102. How many bits are in a byte?

     ✅ Answer: 8

     💡 A byte of 8 bits can represent 256 different values.

104. Q103. Which programming language, created in 1991 by Guido van Rossum, is named after a comedy group?

     ✅ Answer: Python

     💡 Python is named after Monty Python’s Flying Circus, not the snake.

105. Q104. What did the computer mouse’s inventor, Douglas Engelbart, demonstrate in 1968?

     ✅ Answer: The “Mother of All Demos”

     💡 The demo showed the mouse, hypertext, video conferencing and collaborative editing.

106. Q105. Which open-source operating system kernel did Linus Torvalds release in 1991?

     ✅ Answer: Linux

     💡 Linux now runs most servers, supercomputers and Android phones.

107. Q106. What was the “Y2K bug” feared to cause?

     ✅ Answer: Computers misreading the year 2000 as 1900

     💡 Many programs stored years with two digits; huge efforts fixed most problems in advance.

108. Q107. Which IBM computer beat world chess champion Garry Kasparov in a 1997 match?

     ✅ Answer: Deep Blue

     💡 Deep Blue won the six-game rematch 3½–2½.

109. Q108. What does “RAM” stand for?

     ✅ Answer: Random Access Memory

     💡 RAM is fast, temporary memory that is cleared when the power goes off.

110. Q109. Which language, developed by Dennis Ritchie at Bell Labs in the early 1970s, influenced many modern languages?

     ✅ Answer: C

     💡 C was used to rewrite the Unix operating system.

111. Q110. Which Google DeepMind program defeated Go champion Lee Sedol in 2016?

     ✅ Answer: AlphaGo

     💡 AlphaGo won the five-game match 4–1 in Seoul.

112. Q111. Which company released the iPod in 2001?

     ✅ Answer: Apple

     💡 Apple advertised the first iPod as “1,000 songs in your pocket”.

113. Q112. Sony’s Walkman, launched in 1979, was famous for playing what?

     ✅ Answer: Cassette tapes

     💡 The Walkman made personal, portable music popular around the world.

114. Q113. Which Finnish company made the best-selling 3310 phone, released in 2000?

     ✅ Answer: Nokia

     💡 The Nokia 3310 is remembered for its toughness and the game Snake.

115. Q114. What does “GPS” stand for?

     ✅ Answer: Global Positioning System

     💡 GPS uses a network of satellites run by the US Space Force.

116. Q115. Which Nintendo console, released in 2017, can be used both at home and as a handheld?

     ✅ Answer: Nintendo Switch

     💡 The Switch became one of Nintendo’s best-selling consoles ever.

117. Q116. What does “USB” stand for?

     ✅ Answer: Universal Serial Bus

     💡 USB-C, a reversible connector, has become standard on many devices.

118. Q117. Which wireless technology, named after a Viking king, connects headphones and speakers?

     ✅ Answer: Bluetooth

     💡 Bluetooth is named after Harald “Bluetooth” Gormsson, a 10th-century Danish king.

119. Q118. Which company makes the Galaxy line of smartphones?

     ✅ Answer: Samsung

     💡 The first Galaxy S phone launched in 2010.

120. Q119. Which BlackBerry feature made it popular with business users in the 2000s?

     ✅ Answer: A full physical keyboard and push email

     💡 Its addictive email earned it the nickname “CrackBerry”.

121. Q120. What does an e-reader such as the Amazon Kindle use to look like paper?

     ✅ Answer: E-ink

     💡 E-ink reflects light like paper and only uses power when the page changes.

122. Q121. Which smart speaker assistant is made by Amazon?

     ✅ Answer: Alexa

     💡 Alexa launched with the Echo speaker in 2014.

123. Q122. What was special about the Motorola DynaTAC 8000X, released in 1983?

     ✅ Answer: It was the first commercial handheld mobile phone

     💡 Nicknamed “the brick”, it weighed about 800 grams and cost nearly 4,000 dollars.

124. Q123. Which game console sold the most units of all time?

     ✅ Answer: PlayStation 2

     💡 Sony’s PlayStation 2 sold over 155 million units.

125. Q124. What does “4K” refer to in TVs and monitors?

     ✅ Answer: Resolution about 4,000 pixels wide

     💡 Consumer 4K is usually 3,840 × 2,160 pixels.

126. Q125. Which company makes the Pixel smartphone?

     ✅ Answer: Google

     💡 Google launched the first Pixel phone in 2016.

127. Q126. What is the name of Apple’s voice assistant?

     ✅ Answer: Siri

     💡 Siri was introduced on the iPhone 4S in 2011.

128. Q127. Which technology lets you pay by tapping your phone on a card reader?

     ✅ Answer: NFC (near-field communication)

     💡 NFC works only over a few centimetres.

129. Q128. Which handheld console, released by Nintendo in 1989, came bundled with Tetris?

     ✅ Answer: Game Boy

     💡 The Game Boy sold over 118 million units together with the Game Boy Color.

130. Q129. What does “VR” stand for in gaming headsets?

     ✅ Answer: Virtual Reality

     💡 Augmented reality (AR) overlays graphics on the real world instead.

131. Q130. Which camera company invented the instant camera that prints photos in seconds?

     ✅ Answer: Polaroid

     💡 Edwin Land of Polaroid introduced instant photography in 1948.

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