100 MCQs — Basics of Computer
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1. What does 'CPU' stand for?
- A) Central Process Unit
- B) Central Processing Unit
- C) Computer Personal Unit
- D) Central Processor Utility
2. Who is considered the father of computers?
- A) Alan Turing
- B) Charles Babbage
- C) Bill Gates
- D) John von Neumann
3. Which generation of computers used vacuum tubes?
- A) First generation
- B) Second generation
- C) Third generation
- D) Fourth generation
4. Which generation introduced microprocessors?
- A) First
- B) Second
- C) Third
- D) Fourth
5. Which device is considered the brain of the computer?
- A) Monitor
- B) CPU
- C) Keyboard
- D) Mouse
6. A computer is basically a machine that processes what?
- A) Only numbers
- B) Only text
- C) Data into information
- D) Only images
7. Which of these is an example of a supercomputer?
- A) iPhone
- B) PARAM
- C) Casio calculator
- D) Smartwatch
8. Which type of computer is used in homes and offices?
- A) Mainframe
- B) Personal Computer (PC)
- C) Supercomputer
- D) Minicomputer
9. What does 'PC' stand for?
- A) Public Computer
- B) Personal Computer
- C) Processing Computer
- D) Portable Computer
10. Which is the smallest unit of data in a computer?
- A) Byte
- B) Bit
- C) Nibble
- D) Word
11. How many bits make one byte?
- A) 4
- B) 8
- C) 16
- D) 32
12. Which of the following is an analog computer example?
- A) Laptop
- B) Desktop
- C) Thermometer
- D) Smartphone
13. Which company developed the first commercially successful PC?
- A) Apple
- B) IBM
- C) Microsoft
- D) Dell
14. The term 'hardware' refers to:
- A) Programs and instructions
- B) Physical components of a computer
- C) Data stored in files
- D) Internet connections
15. The term 'software' refers to:
- A) Set of instructions/programs
- B) Physical parts of a computer
- C) Only the monitor
- D) Only the keyboard
16. Which of these is NOT a characteristic of a computer?
- A) Speed
- B) Accuracy
- C) Emotion
- D) Storage
17. Which generation of computers used Integrated Circuits (ICs)?
- A) First
- B) Second
- C) Third
- D) Fifth
18. Fifth generation computers are based on:
- A) Vacuum tubes
- B) Transistors
- C) Artificial Intelligence
- D) ICs
19. Which is the full form of 'IC'?
- A) Internal Component
- B) Integrated Circuit
- C) Input Control
- D) Internet Connection
20. A laptop is an example of which type of computer?
- A) Mainframe
- B) Portable/Personal computer
- C) Supercomputer
- D) Server
21. Which of the following is an input device?
- A) Monitor
- B) Printer
- C) Keyboard
- D) Speaker
22. Which of the following is an output device?
- A) Mouse
- B) Scanner
- C) Monitor
- D) Keyboard
23. A mouse is mainly used to:
- A) Print documents
- B) Point and click on screen items
- C) Store data
- D) Scan images
24. Which device converts a physical document into digital form?
- A) Printer
- B) Scanner
- C) Speaker
- D) Projector
25. Which of these is both an input and output device?
- A) Keyboard
- B) Mouse
- C) Touchscreen
- D) Scanner
26. What is the function of a printer?
- A) Capture images
- B) Produce a hard copy of data
- C) Play sound
- D) Input text
27. Which part of the computer is called the 'control center'?
- A) RAM
- B) CPU
- C) Hard disk
- D) Monitor
28. Which of the following is a pointing device?
- A) Keyboard
- B) Mouse
- C) Printer
- D) Monitor
29. Which is an example of an output device that produces sound?
- A) Microphone
- B) Speaker
- C) Scanner
- D) Keyboard
30. Which input device is used mainly for voice input?
- A) Speaker
- B) Microphone
- C) Webcam
- D) Joystick
31. A webcam is primarily used for:
- A) Printing
- B) Capturing video/images
- C) Typing
- D) Playing audio
32. Which of these is used for gaming input?
- A) Scanner
- B) Joystick
- C) Printer
- D) Monitor
33. The CPU consists of which main parts?
- A) Monitor and keyboard
- B) ALU, CU, and registers
- C) RAM and ROM only
- D) Mouse and printer
34. 'ALU' stands for:
- A) Automatic Logic Unit
- B) Arithmetic Logic Unit
- C) Advanced Learning Unit
- D) Application Level Unit
35. What does 'CU' in CPU architecture stand for?
- A) Central Unit
- B) Control Unit
- C) Computer Utility
- D) Core Unit
36. Which device is used to display output visually?
- A) Speaker
- B) Monitor
- C) Printer
- D) Keyboard
37. Which of the following is NOT an input device?
- A) Keyboard
- B) Scanner
- C) Printer
- D) Mouse
38. Touchpad is commonly found in:
- A) Desktop computers
- B) Laptops
- C) Printers
- D) Servers
39. Which device is used to project a computer's display onto a large screen?
- A) Monitor
- B) Projector
- C) Scanner
- D) Printer
40. A barcode reader is an example of:
- A) Output device
- B) Input device
- C) Storage device
- D) Processing device
41. What does 'RAM' stand for?
- A) Read Access Memory
- B) Random Access Memory
- C) Run Active Memory
- D) Read Active Module
42. RAM is a type of:
- A) Permanent memory
- B) Volatile/temporary memory
- C) Storage device
- D) Output device
43. What does 'ROM' stand for?
- A) Read Only Memory
- B) Random Only Memory
- C) Read Output Memory
- D) Run Only Memory
44. Which memory is non-volatile (data is retained without power)?
- A) RAM
- B) ROM
- C) Cache
- D) Register
45. Which is faster: RAM or Hard Disk?
- A) Hard Disk
- B) RAM
- C) Both are equal
- D) Neither
46. Which of these is a secondary storage device?
- A) RAM
- B) Cache memory
- C) Hard Disk
- D) Register
47. 1 Kilobyte (KB) is equal to:
- A) 1000 bytes
- B) 1024 bytes
- C) 100 bytes
- D) 1 byte
48. 1 Megabyte (MB) is equal to:
- A) 1024 bytes
- B) 1024 KB
- C) 1024 GB
- D) 1 GB
49. 1 Gigabyte (GB) is equal to:
- A) 1024 bytes
- B) 1024 KB
- C) 1024 MB
- D) 1024 TB
50. Which comes first in increasing order of storage size?
- A) MB, KB, GB, TB
- B) KB, MB, GB, TB
- C) GB, MB, KB, TB
- D) TB, GB, MB, KB
51. A CD (Compact Disc) is an example of:
- A) Input device
- B) Optical storage device
- C) Output device
- D) Processing device
52. Which of these has the highest storage capacity typically?
- A) CD
- B) DVD
- C) Blu-ray Disc
- D) Floppy disk
53. A USB flash drive is a type of:
- A) Optical storage
- B) Portable/removable storage
- C) Volatile memory
- D) Output device
54. Which memory is used to speed up processor operations by storing frequently used data?
- A) ROM
- B) Cache memory
- C) Hard disk
- D) Floppy disk
55. Which of the following is the oldest storage medium?
- A) SSD
- B) Floppy disk
- C) Blu-ray disc
- D) USB drive
56. SSD stands for:
- A) Slow Storage Drive
- B) Solid State Drive
- C) Secondary Storage Device
- D) System Storage Disk
57. Which is faster: SSD or traditional Hard Disk Drive (HDD)?
- A) HDD
- B) SSD
- C) Both same speed
- D) Neither
58. Data in RAM is lost when:
- A) The file is closed
- B) The computer is powered off
- C) The screen is locked
- D) The mouse is disconnected
59. Which unit is larger: Terabyte or Gigabyte?
- A) Gigabyte
- B) Terabyte
- C) Both are equal
- D) Cannot be determined
60. BIOS is stored in which type of memory?
- A) RAM
- B) ROM
- C) Cache
- D) Hard disk
61. Which of these is an operating system?
- A) MS Word
- B) Windows
- C) Photoshop
- D) Chrome
62. Which of the following is application software?
- A) Windows
- B) Linux
- C) MS Excel
- D) macOS
63. The main function of an operating system is to:
- A) Only play games
- B) Manage hardware and software resources
- C) Print documents
- D) Browse the internet only
64. Which is an open-source operating system?
- A) Windows
- B) macOS
- C) Linux
- D) None of these
65. Which of these is NOT an operating system?
- A) Windows
- B) macOS
- C) Linux
- D) MS Word
66. System software includes:
- A) Games
- B) Operating systems and utility programs
- C) Word processors only
- D) Web browsers only
67. Which software is used to create documents?
- A) MS Excel
- B) MS Word
- C) MS PowerPoint
- D) MS Access
68. Which software is used to create spreadsheets?
- A) MS Word
- B) MS Excel
- C) MS PowerPoint
- D) Notepad
69. Which software is used for creating presentations?
- A) MS Word
- B) MS Excel
- C) MS PowerPoint
- D) Paint
70. Which of these is an example of a web browser?
- A) MS Word
- B) Google Chrome
- C) Windows Media Player
- D) Notepad
71. Antivirus software is used to:
- A) Increase computer speed only
- B) Protect the computer from malicious software
- C) Create documents
- D) Browse websites
72. Which of these is a type of malicious software?
- A) Antivirus
- B) Virus
- C) Firewall
- D) Operating system
73. Which is an example of open-source software?
- A) MS Office
- B) Adobe Photoshop
- C) LibreOffice
- D) Windows
74. Which of the following is a text editor?
- A) MS Excel
- B) Notepad
- C) MS PowerPoint
- D) Photoshop
75. Utility software is designed to:
- A) Create games only
- B) Help maintain and optimize computer performance
- C) Browse internet only
- D) Type documents only
76. Which of these is a mobile operating system?
- A) Windows XP
- B) Android
- C) MS-DOS
- D) Ubuntu Server
77. Device drivers are a type of:
- A) Application software
- B) System software
- C) Game software
- D) None of these
78. Which of the following is used to compress files?
- A) MS Word
- B) WinRAR/WinZip
- C) Paint
- D) Notepad
79. Firmware is:
- A) Application software installed by the user
- B) Software permanently programmed into hardware
- C) A type of virus
- D) A web browser
80. Which is the latest widely-used desktop operating system by Microsoft (as commonly known)?
- A) Windows 95
- B) Windows XP
- C) Windows 11
- D) MS-DOS
81. What does 'WWW' stand for?
- A) World Wide Web
- B) World Wide Wire
- C) Wide World Web
- D) World Web Wire
82. What does 'URL' stand for?
- A) Universal Reading Link
- B) Uniform Resource Locator
- C) Uniform Reading Locator
- D) Universal Resource Link
83. What does 'HTTP' stand for?
- A) HyperText Transmission Protocol
- B) HyperText Transfer Protocol
- C) High Transfer Text Protocol
- D) HyperText Text Protocol
84. Which protocol is a secure version of HTTP?
- A) FTP
- B) HTTPS
- C) SMTP
- D) TCP
85. What does 'LAN' stand for?
- A) Local Area Network
- B) Large Area Network
- C) Long Area Network
- D) Linked Area Network
86. What does 'WAN' stand for?
- A) Wide Access Network
- B) Wide Area Network
- C) Web Area Network
- D) Wireless Area Network
87. Which device connects multiple computers in a network?
- A) Monitor
- B) Router/Switch
- C) Printer
- D) Scanner
88. What does 'Wi-Fi' primarily provide?
- A) Wired internet only
- B) Wireless internet connectivity
- C) Only local file storage
- D) Only printing services
89. What does 'email' stand for?
- A) Electric mail
- B) Electronic mail
- C) Express mail
- D) Enclosed mail
90. Which symbol is used in an email address to separate the username and domain?
- A) #
- B) @
- C) &
- D) %
91. What does 'ISP' stand for?
- A) Internal Service Provider
- B) Internet Service Provider
- C) Internet System Process
- D) Internal System Provider
92. Which of these is a search engine?
- A) MS Word
- B) Google
- C) Windows
- D) Excel
93. What does 'IP address' stand for?
- A) Internal Process address
- B) Internet Protocol address
- C) Internet Personal address
- D) Internal Protocol address
94. Which key combination is used to copy selected text?
- A) Ctrl + V
- B) Ctrl + C
- C) Ctrl + X
- D) Ctrl + Z
95. Which key combination is used to paste text?
- A) Ctrl + C
- B) Ctrl + V
- C) Ctrl + X
- D) Ctrl + A
96. Which key combination undoes the last action?
- A) Ctrl + Y
- B) Ctrl + Z
- C) Ctrl + A
- D) Ctrl + S
97. Which key is used to save a document?
- A) Ctrl + P
- B) Ctrl + S
- C) Ctrl + O
- D) Ctrl + N
98. Which key combination selects all content in a document?
- A) Ctrl + C
- B) Ctrl + A
- C) Ctrl + S
- D) Ctrl + Z
99. A firewall is used to:
- A) Cool down the CPU
- B) Protect a network from unauthorized access
- C) Increase internet speed
- D) Store files
100. What does 'USB' stand for?
- A) Universal System Bus
- B) Universal Serial Bus
- C) United Serial Bus
- D) Universal Storage Bus
