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COMPUTER ONE LINER MCQS

1. What does CPU stand for in computers?
Answer: Central Processing Unit

2. Which key is used to refresh a webpage?
Answer: F5

3. What does RAM stand for?
Answer: Random Access Memory

4. Which company developed the Windows operating system?
Answer: Microsoft

5. What is the shortcut for “copy” in Windows?
Answer: Ctrl + C

6. What type of device is a printer?
Answer: Output Device

7. What is the full form of URL?
Answer: Uniform Resource Locator

8. Which language is used to create web pages?
Answer: HTML

9. What does ‘bit’ stand for?
Answer: Binary Digit

10. Which part of the computer stores the operating system?
Answer: Hard Disk

11.Which programming language is known as the mother of all languages?
A) C

12.What does GUI stand for?
A) Graphical User Interface

13.What is an example of an output device?
A) Printer

14.What does IP stand for in networking?
A) Internet Protocol

15.Which key is used to refresh a page in most browsers?
A) F5

16.What is the main circuit board in a computer called?
A) Motherboard

17.What does HTML stand for?
A) HyperText Markup Language

18.Which company developed the Windows OS?
A) Microsoft

19.Which device connects your computer to the internet?
A) Modem

20.What is the function of an operating system?
A) Manage hardware and software resources

21.Which company created the Mac OS?
A) Apple

22.What is the default file extension for MS Word files?
A) .docx

23.What type of device is a monitor?
A) Output Device

24.What does LAN stand for?
A) Local Area Network

25.What does WAN stand for?
A) Wide Area Network

26.Which unit measures computer memory?
A) Byte

27.What is phishing?
A) A cyber attack to steal information

28.Which part of the computer handles graphics?
A) GPU

29.Which command is used to copy text in Windows?
A) Ctrl + C

30.Which command is used to paste text in Windows?
A) Ctrl + V

31.What does PDF stand for?
A) Portable Document Format

32.What does DNS stand for?
A) Domain Name System

33.What is a firewall used for?
A) Network security

34.What does BIOS stand for?
A) Basic Input Output System

35.What is an IP address?
A) Unique number to identify a device on a network

36.What is malware?
A) Malicious software

37.What does SSD stand for?
A) Solid State Drive

38.Which key is used to open Task Manager?
A) Ctrl + Shift + Esc

39.What is the full form of AI?
A) Artificial Intelligence

40.What is the function of a router?
A) Connects networks together.

41.What is a domain name?
A) The address of a website

42.What is a hyperlink?
A) A clickable link to another page or document

43.What is the binary number system made of?
A) 0 and 1

44.What is cloud computing?
A) Using remote servers for data storage and access

45.What is the shortcut to select all text?
A) Ctrl + A

46.What is a virus in computer terms?
A) A program that damages files or systems

47.What is Google Chrome?
A) Web Browser

48.What does FTP stand for?
A) File Transfer Protocol

49.What is a spreadsheet used for?
A) Organizing data in rows and columns

50.What is Microsoft Excel used for?
A) Creating and managing spreadsheets

51.What is the full form of Wi-Fi?
A) Wireless Fidelity

52.Which software is used to create presentations?
A) Microsoft PowerPoint

53.What does SEO stand for?
A) Search Engine Optimization

54.What is a pixel?
A) The smallest unit of a digital image

55.What is the full form of ICT?
A) Information and Communication Technology

56.What does VPN stand for?
A) Virtual Private Network

57.Which company owns Android OS?
A) Google

58.Which programming language is primarily used for web development?
A) JavaScript

59.What does CMS stand for?
A) Content Management System

60.What is Git used for?
A) Version Control

61.What is the full form of SQL?
A) Structured Query Language

62.Which device is used to scan documents?
A) Scanner

63.Which port is commonly used for internet browsing?
A) Port 80

64.What is the full form of OCR?
A) Optical Character Recognition

65.What is the term for unwanted email?
A) Spam

66.What is a database?
A) A collection of organized data

67.Which device is used to make hard copies?
A) Printer

68.What does MPEG stand for?
A) Moving Picture Experts Group

69.What is Bluetooth used for?
A) Wireless data transfer over short distances

70.Which button is used to start Windows?
A) Start Button

71.What is an algorithm?
A) A step-by-step procedure to solve a problem

72.What is hacking?
A) Unauthorized access to a system

73.Which programming language is used for AI?
A) Python

74.What is CAPTCHA used for?
A) To verify human users

75.What is an app?
A) A software application

76.What is the function of a cache memory?
A) Speed up data access for CPU

77.What is an extension of an Excel file?
A) .xlsx

78.What is BIOS responsible for?
A) Booting the computer

79.What is the use of Notepad?
A) Text editing

80.Which key is used to close a program quickly?
A) Alt + F4

81.What is an Ethernet cable used for?
A) Wired internet connection

82.What is the function of Ctrl + Z?
A) Undo

83.What is the function of Ctrl + Y?
A) Redo

84.What is the Internet?
A) A global network of computers

85.What is Excel cell?
A) An intersection of row and column

86.What is software?
A) A set of instructions for the computer

87.What is hardware?
A) Physical components of a computer

88.What is the shortcut to print a document?
A) Ctrl + P

89.Which company developed Java?
A) Sun Microsystems

90.What is a cookie in browser?
A) Small file storing user data

91.What does .com mean in a website?
A) Commercial

92.What is the taskbar?
A) Bar at bottom showing open apps

93.What is an antivirus?
A) Software to remove viruses

94.What is a tab in web browser?
A) A page opened in the same window

95.What is Zoom used for?
A) Video conferencing

96.What is GitHub?
A) A platform to host code

97.What is multitasking in computers?
A) Running multiple tasks simultaneously

98.What is the use of clipboard?
A) Temporarily stores copied data

99.What is a screenshot?
A) Image capture of screen content

100.What does ISP stand for?
A) Internet Service Provider

101.What is the main function of an operating system?
Answer: To manage hardware and software resources

102.What is the full form of URL?
Answer: Uniform Resource Locator

103.What type of device is a keyboard?
Answer: Input device

104.Which programming language is used to build Android apps?
Answer: Java

105.What does HTML stand for?
Answer: HyperText Markup Language

106.What is the purpose of a firewall in a computer?
Answer: To protect against unauthorized access

107.Which part of a computer performs arithmetic operations?
Answer: ALU (Arithmetic Logic Unit)

108.What is an IP address used for?
Answer: Identifying devices on a network

109.What does GUI stand for?
Answer: Graphical User Interface

110.What storage device uses spinning disks to read/write data?
Answer: Hard Disk Drive (HDD)

111.What type of memory is ROM?
Answer: Read-Only Memory

112.What is the shortcut for “Copy” on a Windows PC?
Answer: Ctrl + C

113.Which company developed the Windows OS?
Answer: Microsoft

114.What is phishing?
Answer: A scam to steal personal information

115.What is the brain of the computer?
Answer: Central Processing Unit (CPU)

116.What kind of software is MS Word?
Answer: Word Processor

117.Which unit is used to measure data speed?
Answer: Bits per second (bps)

118.What does PDF stand for?
Answer: Portable Document Format

119.What is the function of a modem?
Answer: Converts digital signals to analog and vice versa

120.Which key is used to refresh a webpage?
Answer: F5

121.What is cloud computing?
Answer: Storing and accessing data over the internet

122.What does BIOS stand for?
Answer: Basic Input Output System

123.What is a cookie in web terms?
Answer: A small file stored by a website on a user’s computer

124.Which tool is used to detect and remove viruses?
Answer: Antivirus software

125.What does LAN stand for?
Answer: Local Area Network

126.What device connects a computer to the internet?
Answer: Router

127.What does HTTP stand for?
Answer: HyperText Transfer Protocol

128.What is the function of a compiler?
Answer: Translates code into executable programs

129.What is the default file extension for Word documents?
Answer: .docx

130.What does SSL stand for?
Answer: Secure Sockets Layer

131.What does FTP stand for?
Answer: File Transfer Protocol

132.Which protocol is used to send emails?
Answer: SMTP

133.What is a bit?
Answer: The smallest unit of data in computing

134.What is the default port number for HTTP?
Answer: 80

135.What is the binary number for decimal 5?
Answer: 101

136.What kind of device is a monitor?
Answer: Output device

137.What is multitasking?
Answer: Running multiple programs at once

138.Which language is mostly used for web development?
Answer: JavaScript

139.What is an SSD?
Answer: Solid State Drive

140.What does DNS stand for?
Answer: Domain Name System

141.What is spam?
Answer: Unwanted or junk email

142.What is a pixel?
Answer: The smallest unit of a digital image

143.What is the shortcut for “Paste”?
Answer: Ctrl + V

144.What is the extension of an Excel file?
Answer: .xlsx

145.What does CAD stand for in design software?
Answer: Computer-Aided Design

146.What is encryption?
Answer: Converting data into a secure code

147.What does SaaS stand for?
Answer: Software as a Service

148.Which key deletes selected items permanently?
Answer: Shift + Delete

`149.What is artificial intelligence?
Answer: Simulation of human intelligence in machines

150.What does ISP stand for?
Answer: Internet Service Provider

151.What is a QR code?
Answer: Quick Response code

152.What does GPU stand for?
Answer: Graphics Processing Unit

153.What does XML stand for?
Answer: eXtensible Markup Language

154.Which device is used to take a hard copy?
Answer: Printer

155.What is the full form of USB?
Answer: Universal Serial Bus

156.What is an algorithm?
Answer: A step-by-step procedure for solving a problem

157.What does MAC address stand for?
Answer: Media Access Control address

158.What does DOS stand for?
Answer: Disk Operating System

159.What is a hyperlink?
Answer: A link from one webpage to another

160.What is the use of Ctrl + Z?
Answer: Undo last action

161.What is malware?
Answer: Malicious software

162.What is the default browser in Windows?
Answer: Microsoft Edge

163.What is a byte?
Answer: 8 bits

164.What does Mbps stand for?
Answer: Megabits per second

165.What is Linux?
Answer: An open-source operating system

166.What does ICT stand for?
Answer: Information and Communication Technology

167.What is the function of cache memory?
Answer: Stores frequently used data for quick access

168.What does VGA stand for?
Answer: Video Graphics Array

169.What does IoT stand for?
Answer: Internet of Things

170.What is the shortcut for “Select All”?
Answer: Ctrl + A

171.What is a motherboard?
Answer: Main circuit board of a computer

172.What does URL contain?
Answer: Web address of a resource

173.What is a web browser?
Answer: Software to access the internet

174.What does AI stand for?
Answer: Artificial Intelligence

175.What is a PDF file used for?
Answer: Presenting documents consistently

176.What does DNS translate?
Answer: Domain names into IP addresses

177.What is a network?
Answer: A group of connected computers

178.What does Ctrl + S do?
Answer: Save the current document

179.What is a server?
Answer: A computer that provides data to others

180.What does IP stand for in networking?
Answer: Internet Protocol

181.What is a web server?
Answer: A system that hosts websites

182.What is CAPTCHA used for?
Answer: To verify human users

183.What is a blog?
Answer: A regularly updated website or web page

184.What does OS stand for?
Answer: Operating System

185.What is a Trojan horse in computing?
Answer: A type of malicious software disguised as legit

186.What does HDMI stand for?
Answer: High-Definition Multimedia Interface

187.What is a proxy server?
Answer: A server that acts as an intermediary for requests

188.What is data mining?
Answer: Analyzing large datasets for patterns

189.What is Google Drive used for?
Answer: Online file storage and sharing

190.What does ASCII stand for?
Answer: American Standard Code for Information Interchange

191.What does BIOS stand for in computers?
Answer: Basic Input Output System

192.Which device is used to connect a computer to the internet?
Answer: Modem

193.What is the brain of the computer?
Answer: CPU

194.Which key is used to refresh a webpage?
Answer: F5

195.What does HTTP stand for?
Answer: Hypertext Transfer Protocol

196.Which storage device uses magnetic disks?
Answer: Hard Disk Drive

197.What is the shortcut for copy in Windows?
Answer: Ctrl + C

198.Which language is used to create web pages?
Answer: HTML

199.What does IP stand for in networking?
Answer: Internet Protocol

200.What is the main function of RAM?
Answer: Temporary storage of data

201.What does URL stand for?
Answer: Uniform Resource Locator

202.Which company developed Windows OS?
Answer: Microsoft

203.What does GUI stand for?
Answer: Graphical User Interface

204.Which part of the computer handles arithmetic operations?
Answer: ALU

205.What is the shortcut for paste in Windows?
Answer: Ctrl + V

206.What does PDF stand for?
Answer: Portable Document Format

207.Which type of computer is most powerful?
Answer: Supercomputer

208.What is the default file extension for Word documents in newer versions?
Answer: .docx

209.What does LAN stand for?
Answer: Local Area Network

210.What does VPN stand for?
Answer: Virtual Private Network

211.Which protocol is used for sending emails?
Answer: SMTP

212.Which protocol is used for receiving emails?
Answer: IMAP

213.What does SQL stand for?
Answer: Structured Query Language

214.Which device is used to display output?
Answer: Monitor

215.What does DNS stand for?
Answer: Domain Name System

216.What is the primary function of an operating system?
Answer: Manage hardware and software resources

217.Which key combination is used to undo?
Answer: Ctrl + Z

218.Which storage device has no moving parts?
Answer: SSD

219.What does AI stand for?
Answer: Artificial Intelligence

220.What is the smallest unit of data in a computer?
Answer: Bit

221.What does USB stand for?
Answer: Universal Serial Bus

222.Which type of memory is non-volatile?
Answer: ROM

223.What is the full form of IP in IP address?
Answer: Internet Protocol

224.Which company created the Mac OS?
Answer: Apple

225.Which unit is used to measure processing speed?
Answer: Hertz

226.Which program is used for browsing the internet?
Answer: Web Browser

227.What is the shortcut to print in Windows?
Answer: Ctrl + P

228.What does ASCII stand for?
Answer: American Standard Code for Information Interchange

229.Which port is used for HTTP?
Answer: Port 80

230.Which port is used for HTTPS?
Answer: Port 443

231.What does VPN do?
Answer: Encrypts internet connection and hides IP

232.What is phishing?
Answer: Fraudulent attempt to obtain sensitive information

233.Which file extension is for Excel files?
Answer: .xlsx

234.What does IoT stand for?
Answer: Internet of Things

235.What is the default browser for Windows 10?
Answer: Microsoft Edge

236.Which key is used to rename a file in Windows?
Answer: F2

237.What does MPEG stand for?
Answer: Moving Picture Experts Group

238.Which network covers the largest area?
Answer: WAN

239.What is cloud computing?
Answer: Delivery of services over the interne

240.What does IPsec stand for?
Answer: Internet Protocol Security

241.What is the main function of a firewall?
Answer: Protect network from unauthorized access

242.What is malware?
Answer: Malicious software

243.Which programming language is known as the mother of all languages?
Answer: C

244.What does FTP stand for?
Answer: File Transfer Protocol

245.What is cache memory used for?
Answer: Speeding up data access

246.Which search engine is owned by Microsoft?
Answer: Bing

247.What does SEO stand for?
Answer: Search Engine Optimization

248.Which company developed Android OS?
Answer: Google

249.What is the shortcut for select all in Windows?
Answer: Ctrl + A

250.What does CAD stand for?
Answer: Computer-Aided Design

251.Which device is used for inputting text?
Answer: Keyboard

252.Which device is used to point and click?
Answer: Mouse

253.What does ISP stand for?
Answer: Internet Service Provider

254.What is open-source software?
Answer: Software with publicly available source code

255.What does JPEG stand for?
Answer: Joint Photographic Experts Group

256.Which company developed Photoshop?
Answer: Adobe

257.What is the default file extension for PowerPoint?
Answer: .pptx

258.What does AI in chatbots stand for?
Answer: Artificial Intelligence

259.Which network device connects multiple networks?
Answer: Router

260.What is the purpose of an IP address?
Answer: Identify devices on a network

261.Which command is used to copy files in Windows command prompt?
Answer: copy

262.What does DOS stand for?
Answer: Disk Operating System

263.Which programming language is used for web styling?
Answer: CSS

264.What does SaaS stand for?
Answer: Software as a Service

265.What is the purpose of a database?
Answer: Store and manage data

266.What is a pixel?
Answer: Smallest unit of a digital image

267.Which unit is used to measure data transfer speed?
Answer: Mbps

268.What does VPN hide?
Answer: IP address and location

269.What is the shortcut for save in Windows?
Answer: Ctrl + S

270.What does HTML stand for?
Answer: Hypertext Markup Language

271.Which company developed Java?
Answer: Sun Microsystems

272.What is a hyperlink?
Answer: Clickable link to another document or webpage

273.What does HTTPs stand for?
Answer: Hypertext Transfer Protocol Secure

274.Which key combination is used to close a program in Windows?
Answer: Alt + F4

275.What is a byte?
Answer: 8 bits

276.What does GUI allow users to do?
Answer: Interact with the system using graphics

277.Which device is used for sound output?
Answer: Speakers

278.What does VLSI stand for?
Answer: Very Large Scale Integration

279.Which device connects computers in a LAN?
Answer: Switch

280.What is the default file extension for Notepad?
Answer: .txt

281.What does DNS translate?
Answer: Domain names to IP addresses

282.Which company created the Linux OS?
Answer: Linus Torvalds

283.What does MAC address stand for?
Answer: Media Access Control address

284.What is a cookie in web browsers?
Answer: Small file storing user data

285.What does API stand for?
Answer: Application Programming Interface

286.That is the function of a compiler?
Answer: Translate code to machine language

287.What is a Trojan horse in computing?
Answer: Malicious program disguised as legitimate software

288.Which programming language is used for iOS apps?
Answer: Swift

289.What does CGI stand for in web development?
Answer: Common Gateway Interface

290.What is virtualization?
Answer: Creating virtual versions of computing resources

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