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
291.What does IP stand for in networking?
Answer: Internet Protocol
292.What is the shortcut key for “Copy” in Windows?
Answer: Ctrl + C
293.Which company developed Windows OS?
Answer: Microsoft
294.What type of memory is ROM?
Answer: Non-volatile memory
295.What does GUI stand for?
Answer: Graphical User Interface
296.What is the function of the ALU in a computer?
Answer: Performs arithmetic and logical operations
297.Which protocol is used for sending emails?
Answer: SMTP
298.What does URL stand for?
Answer: Uniform Resource Locator
299.Which computer virus is spread through email attachments?
Answer: Macro Virus
300.What is the storage capacity of a standard CD?
Answer: 700 MB