Computer Basics MCQs with Answers (100 Multiple Choice Questions)

Practice 100 Computer Basics MCQs with answers covering hardware, software, memory, input/output devices, and operating systems. Ideal for exams, quizzes, and beginners.

Computer Basics form the foundation of digital literacy in today’s technology-driven world. This well-structured collection of 100 Computer Basics MCQs with answers covers essential topics such as computer hardware, software, input and output devices, memory units, operating systems, and basic networking concepts. Designed for beginners, students, and competitive exam aspirants, these multiple choice questions are ideal for exam preparation, quizzes, and skill assessment, helping learners build strong fundamental knowledge and confidence in using computers effectively.

Below are 100 Multiple Choice Questions (MCQs) on Computer Basics, written in clear English, suitable for school exams, competitive tests, and basic computer knowledge practice.
Each question has four options and the correct answer is provided.

Computer Basics – 100 MCQs

Introduction to Computers (1–20)

1. A computer is a:
   A) Machine
   B) Electronic device
   C) Electrical device
   D) Mechanical device
   Answer: B

2. The main function of a computer is to:
   A) Store data
   B) Process data
   C) Output data
   D) All of these
   Answer: D

3. The term “computer” is derived from the word:
   A) Compute
   B) Calculus
   C) Compact
   D) Command
   Answer: A

4. Who is known as the father of the computer?
   A) Alan Turing
   B) Charles Babbage
   C) John von Neumann
   D) Bill Gates
   Answer: B

5. A computer works on the principle of:
   A) Input → Process → Output
   B) Output → Process → Input
   C) Process → Input → Output
   D) Input → Output → Process
   Answer: A

6. Data is:
   A) Raw facts
   B) Processed information
   C) Instructions
   D) Output
   Answer: A

7. Information is:
   A) Raw data
   B) Processed data
   C) Hardware
   D) Software
   Answer: B

8. Computer does not have:
   A) Memory
   B) Intelligence
   C) Speed
   D) Accuracy
   Answer: B

9. Which of the following is not a characteristic of a computer?
   A) Speed
   B) Accuracy
   C) Emotions
   D) Storage
   Answer: C

10. Computer can work continuously without getting tired due to:
    A) Accuracy
    B) Diligence
    C) Intelligence
    D) Automation
    Answer: B

11. A computer can store data in:
    A) RAM
    B) Hard disk
    C) Pen drive
    D) All of these
    Answer: D

12. The physical parts of a computer are called:
    A) Software
    B) Hardware
    C) Firmware
    D) Shareware
    Answer: B

13. Programs that run on a computer are called:
    A) Hardware
    B) Software
    C) Memory
    D) Processor
    Answer: B

14. Computer uses which number system?
    A) Decimal
    B) Octal
    C) Binary
    D) Hexadecimal
    Answer: C

15. Binary number system uses:
    A) 0–9
    B) 0 and 1
    C) 1–8
    D) 1–16
    Answer: B

16. A computer cannot do which of the following?
    A) Calculate
    B) Store data
    C) Think on its own
    D) Process data
    Answer: C

17. Which device is known as the brain of the computer?
    A) RAM
    B) Hard disk
    C) CPU
    D) Monitor
    Answer: C

18. The speed of computer is measured in:
    A) Seconds
    B) Hertz
    C) Bytes
    D) Volts
    Answer: B

19. Computer processes data very:
    A) Slowly
    B) Accurately
    C) Inaccurately
    D) Emotionally
    Answer: B

20. Which of the following is an example of a computer?
    A) Calculator
    B) Smartphone
    C) Laptop
    D) All of these
    Answer: D

Hardware (21–50)

21. CPU stands for:
    A) Central Processing Unit
    B) Control Program Unit
    C) Central Program Unit
    D) Control Processing Unit
    Answer: A

22. CPU consists of:
    A) ALU and CU
    B) RAM and ROM
    C) Input and output units
    D) Monitor and keyboard
    Answer: A

23. ALU stands for:
    A) Arithmetic Logic Unit
    B) Advanced Logic Unit
    C) Arithmetic Language Unit
    D) Automatic Logic Unit
    Answer: A

24. CU stands for:
    A) Control Unit
    B) Command Unit
    C) Central Unit
    D) Calculation Unit
    Answer: A

25. Which device is used to enter data?
    A) Monitor
    B) Printer
    C) Keyboard
    D) Speaker
    Answer: C

26. Mouse is a:
    A) Output device
    B) Input device
    C) Storage device
    D) Processing device
    Answer: B

27. Monitor is also known as:
    A) VDU
    B) CPU
    C) ALU
    D) RAM
    Answer: A

28. Printer is an example of:
    A) Input device
    B) Output device
    C) Storage device
    D) Processing device
    Answer: B

29. Which device displays output?
    A) Keyboard
    B) Mouse
    C) Monitor
    D) Scanner
    Answer: C

30. Scanner is used to:
    A) Print data
    B) Enter images
    C) Store data
    D) Process data
    Answer: B

31. Hard disk is a:
    A) Input device
    B) Output device
    C) Storage device
    D) Processing device
    Answer: C

32. RAM stands for:
    A) Read Access Memory
    B) Random Access Memory
    C) Ready Access Memory
    D) Rapid Access Memory
    Answer: B

33. ROM stands for:
    A) Read Only Memory
    B) Ready Only Memory
    C) Random Only Memory
    D) Rapid Only Memory
    Answer: A

34. RAM is:
    A) Permanent memory
    B) Temporary memory
    C) Secondary memory
    D) Optical memory
    Answer: B

35. ROM is:
    A) Temporary memory
    B) Volatile memory
    C) Permanent memory
    D) Cache memory
    Answer: C

36. Which memory is volatile?
    A) ROM
    B) Hard disk
    C) RAM
    D) CD-ROM
    Answer: C

37. Which is an output device?
    A) Scanner
    B) Keyboard
    C) Printer
    D) Joystick
    Answer: C

38. Pen drive is also known as:
    A) Hard disk
    B) Flash drive
    C) Optical disk
    D) RAM
    Answer: B

39. CD-ROM stands for:
    A) Compact Disk Read Only Memory
    B) Central Disk Read Only Memory
    C) Computer Disk ROM
    D) Compact Drive ROM
    Answer: A

40. Which is not an input device?
    A) Mouse
    B) Keyboard
    C) Monitor
    D) Scanner
    Answer: C

41. Speakers are:
    A) Input devices
    B) Output devices
    C) Storage devices
    D) Processing devices
    Answer: B

42. Webcam is used for:
    A) Printing
    B) Video input
    C) Storage
    D) Sound output
    Answer: B

43. Headphones are:
    A) Input devices
    B) Output devices
    C) Storage devices
    D) Processing devices
    Answer: B

44. Joystick is used mainly for:
    A) Typing
    B) Drawing
    C) Playing games
    D) Printing
    Answer: C

45. Cache memory is:
    A) Very slow
    B) Very fast
    C) Permanent
    D) External
    Answer: B

46. Which memory has highest speed?
    A) RAM
    B) ROM
    C) Cache
    D) Hard disk
    Answer: C

47. Which device is used to store large data permanently?
    A) RAM
    B) Cache
    C) Hard disk
    D) Register
    Answer: C

48. Touch screen acts as:
    A) Output only
    B) Input only
    C) Both input and output
    D) Storage
    Answer: C

49. Plotter is used for:
    A) Printing text
    B) Drawing large diagrams
    C) Scanning images
    D) Storing data
    Answer: B

50. Which device converts digital data into printed form?
    A) Scanner
    B) Monitor
    C) Printer
    D) Speaker
    Answer: C

Software, Memory & Basic Concepts (51–100)

51. Software is a set of:
    A) Hardware parts
    B) Programs
    C) Devices
    D) Circuits
    Answer: B

52. Operating system is:
    A) Application software
    B) System software
    C) Utility software
    D) Hardware
    Answer: B

53. Which is an example of operating system?
    A) MS Word
    B) Windows
    C) Excel
    D) PowerPoint
    Answer: B

54. Application software is used for:
    A) System control
    B) User tasks
    C) Hardware control
    D) Booting
    Answer: B

55. MS Word is used for:
    A) Calculations
    B) Presentations
    C) Word processing
    D) Drawing
    Answer: C

56. MS Excel is used for:
    A) Typing letters
    B) Making slides
    C) Calculations and tables
    D) Drawing
    Answer: C

57. MS PowerPoint is used for:
    A) Documents
    B) Presentations
    C) Calculations
    D) Databases
    Answer: B

58. Utility software is used for:
    A) Entertainment
    B) System maintenance
    C) Typing
    D) Programming
    Answer: B

59. Antivirus is an example of:
    A) Application software
    B) System software
    C) Utility software
    D) Hardware
    Answer: C

60. A virus is:
    A) Hardware fault
    B) Software program
    C) Utility
    D) Operating system
    Answer: B

61. Booting means:
    A) Shutting down computer
    B) Restarting computer
    C) Starting computer
    D) Formatting computer
    Answer: C

62. Warm boot means:
    A) Starting after shutdown
    B) Restarting computer
    C) Formatting disk
    D) Switching off power
    Answer: B

63. Cold boot means:
    A) Restart
    B) Sleep mode
    C) Start after power off
    D) Log out
    Answer: C

64. File is:
    A) Collection of folders
    B) Collection of data
    C) Collection of hardware
    D) Collection of software
    Answer: B

65. Folder is used to:
    A) Store files
    B) Process data
    C) Input data
    D) Output data
    Answer: A

66. GUI stands for:
    A) General User Interface
    B) Graphical User Interface
    C) Global User Interface
    D) Graphic Utility Interface
    Answer: B

67. Windows is:
    A) Hardware
    B) Operating system
    C) Utility software
    D) Programming language
    Answer: B

68. Linux is an example of:
    A) Application software
    B) System software
    C) Hardware
    D) Antivirus
    Answer: B

69. DOS stands for:
    A) Disk Operating System
    B) Digital Operating System
    C) Data Operating System
    D) Direct Operating System
    Answer: A

70. Computer language is used to:
    A) Play games
    B) Write programs
    C) Store data
    D) Print documents
    Answer: B

71. High-level language example is:
    A) Machine language
    B) Assembly language
    C) C++
    D) Binary language
    Answer: C

72. Machine language consists of:
    A) English words
    B) Numbers and symbols
    C) 0 and 1
    D) Letters
    Answer: C

73. Assembly language uses:
    A) Binary codes
    B) Mnemonics
    C) English sentences
    D) Graphics
    Answer: B

74. Compiler is used to:
    A) Translate programs
    B) Store programs
    C) Execute programs
    D) Print programs
    Answer: A

75. Storage capacity of computer is measured in:
    A) Volt
    B) Hertz
    C) Byte
    D) Ampere
    Answer: C

76. 1 KB equals:
    A) 100 bytes
    B) 1024 bytes
    C) 1000 bytes
    D) 512 bytes
    Answer: B

77. 1 MB equals:
    A) 1024 KB
    B) 1000 KB
    C) 512 KB
    D) 2048 KB
    Answer: A

78. 1 GB equals:
    A) 1024 MB
    B) 1000 MB
    C) 512 MB
    D) 2048 MB
    Answer: A

79. Cloud storage is:
    A) Offline storage
    B) Internet-based storage
    C) Optical storage
    D) Temporary storage
    Answer: B

80. Google Drive is an example of:
    A) Hardware
    B) Cloud storage
    C) Operating system
    D) Antivirus
    Answer: B

81. Email is used for:
    A) Typing
    B) Printing
    C) Sending messages
    D) Calculating
    Answer: C

82. Internet is:
    A) Single computer
    B) Network of computers
    C) Software
    D) Hardware
    Answer: B

83. WWW stands for:
    A) World Wide Web
    B) World Web Wide
    C) Wide World Web
    D) Web World Wide
    Answer: A

84. Browser is used to:
    A) Type documents
    B) Browse internet
    C) Store files
    D) Print data
    Answer: B

85. Google Chrome is a:
    A) Search engine
    B) Browser
    C) Operating system
    D) Website
    Answer: B

86. A website is a collection of:
    A) Web servers
    B) Web pages
    C) Web browsers
    D) IP addresses
    Answer: B

87. URL stands for:
    A) Uniform Resource Locator
    B) Universal Record Link
    C) Uniform Record Link
    D) Universal Resource Link
    Answer: A

88. Computer ethics refers to:
    A) Computer design
    B) Proper use of computers
    C) Hardware safety
    D) Programming rules
    Answer: B

89. Cyber crime is:
    A) Online shopping
    B) Illegal activity using computer
    C) Online learning
    D) Email usage
    Answer: B

90. Password is used for:
    A) Decoration
    B) Security
    C) Speed
    D) Storage
    Answer: B

91. Backup means:
    A) Deleting data
    B) Copying data
    C) Formatting disk
    D) Printing data
    Answer: B

92. Formatting deletes:
    A) Hardware
    B) Software
    C) Data
    D) Memory
    Answer: C

93. Computer literacy means:
    A) Reading books
    B) Knowing how to use computer
    C) Writing programs
    D) Playing games
    Answer: B

94. Tablet is a:
    A) Input device
    B) Output device
    C) Portable computer
    D) Storage device
    Answer: C

95. Smartphone is an example of:
    A) Supercomputer
    B) Mainframe
    C) Personal computer
    D) Mini computer
    Answer: C

96. Supercomputer is used for:
    A) Gaming
    B) Weather forecasting
    C) Typing
    D) Printing
    Answer: B

97. Mainframe computers are used in:
    A) Homes
    B) Schools
    C) Large organizations
    D) Shops
    Answer: C

98. Laptop is also called:
    A) Desktop
    B) Notebook
    C) Server
    D) Tablet
    Answer: B

99. Desktop computer is:
    A) Portable
    B) Fixed
    C) Wearable
    D) Handheld
    Answer: B

100. Computer is an example of:
     A) Living thing
     B) Artificial intelligence only
     C) Man-made machine
     D) Natural object
     Answer: C