100+ Computer Multiple Choice questions (MCQs) for Competitive Exams [Fundamentals-Advanced]

Here, we have listed the most important top 100+ computer fundamental MCQ questions with answers for your regular practice.

These computer-fundamental multiple-choice questions will always ask in different competitive examinations like IBPS, RRB, Group D, SSC CGL, and many more.

These MCQs will help you to gain an understanding of the basic as well as advanced concepts of computer fundamentals. So, prepare whole heartily.

100+ Computer Multiple Choice questions (MCQs):

These are some of the most commonly asked questions that you need to practice, before trying to attempt any competitive exams. The answers to these questions will be mentioned at the bottom of the article.

1. What is the full form of CPU?
   a) Central Processing Unit
   b) Central Programming Unit
   c) Computer Processing Unit
   d) Computer Programming Unit
2. What is the full form of RAM?
   a) Random Access Memory
   b) Read Access Memory
   c) Random Access Module
   d) Read Access Module
3. What is the full form of ROM?
   a) Read Only Memory
   b) Random Only Memory
   c) Read Only Module
   d) Random Only Module
4. What is the full form of BIOS?
   a) Basic Input Output System
   b) Basic Input Output Software
   c) Basic Input Output Service
   d) Basic Input Output Support
5. Which of the following is a primary storage device?
   a) Hard Disk Drive
   b) CD-ROM
   c) USB Drive
   d) RAM
6. Which of the following is a secondary storage device?
   a) RAM
   b) ROM
   c) CD-ROM
   d) CPU
7. Which of the following is a volatile memory?
   a) ROM
   b) EEPROM
   c) Flash Memory
   d) RAM
8. Which of the following is a non-volatile memory?
   a) RAM
   b) ROM
   c) Cache Memory
   d) Virtual Memory
9. Which of the following is a removable storage device?
   a) Hard Disk Drive
   b) Solid State Drive
   c) CD-ROM
   d) All of the above
10. Which of the following is a non-removable storage device?
    a) CD-ROM
    b) DVD-ROM
    c) Hard Disk Drive
    d) All of the above
11. Which of the following is a digital input device?
    a) Printer
    b) Scanner
    c) Speaker
    d) Monitor
12. Which of the following is a digital output device?
    a) Mouse
    b) Keyboard
    c) Printer
    d) Scanner
13. Which of the following is a pointing device?
    a) Keyboard
    b) Mouse
    c) Scanner
    d) Printer
14. Which of the following is an output device?
    a) Keyboard
    b) Monitor
    c) Mouse
    d) Scanner
15. Which of the following is an input device?
    a) Monitor
    b) Printer
    c) Mouse
    d) Scanner
16. Which of the following is a programming language?
    a) Microsoft Word
    b) C++
    c) Adobe Photoshop
    d) Internet Explorer
17. Which of the following is a high-level language?
    a) Assembly Language
    b) Machine Language
    c) C Language
    d) All of the above
18. Which of the following is a low-level language?
    a) Assembly Language
    b) Machine Language
    c) C Language
    d) All of the above
19. Which of the following is a markup language?
    a) HTML
    b) Java
    c) C++
    d) Python
20. Which of the following is a scripting language?
    a) Java
    b) Python
    c) C++
    d) HTML
21. Which of the following is a network topology?
    a) Bus Topology
    b) Mesh Topology
    c) Star Topology
    d) All of the above
22. Which of the following is a network protocol?
    a) HTTP
    b) TCP/IP
    c) DNS
    d) All of the above
23. Which of the following is a network device?
    a) Router
    b) Printer
    c) Scanner
    d) Keyboard
24. Which of the following is a web browser?
    a) Google Chrome
    b) Microsoft Word
    c) Adobe Photoshop
    d) Internet Explorer
25. What is a computer?
    a) Electronic device
    b) Electro mechanical device
    c) Mechanical device
    d) None of the above
26. What is the primary component of a computer?
    a) Central processing unit (CPU)
    b) Keyboard
    c) Monitor
    d) Mouse
27. What does CPU stand for?
    a) Computer Processing Unit
    b) Central Processing Unit
    c) Central Power Unit
    d) Computer Power Unit
28. What is a motherboard?
    a) A type of CPU
    b) A type of hard disk
    c) A circuit board that connects the CPU, memory, and other hardware components
    d) A type of software
29. What is the function of an operating system?
    a) To manage hardware resources
    b) To provide a user interface
    c) To run applications
    d) All of the above
30. What is the default file extension of a Microsoft Word document?
    a) .docx
    b) .txt
    c) .pdf
    d) .rtf
31. Which of the following is not an internet browser?
    a) Chrome
    b) Firefox
    c) Safari
    d) Windows
32. What is a URL?
    a) Uniform Resource Locator
    b) Universal Resource Locator
    c) Unique Resource Locator
    d) None of the above
33. What is the difference between a virus and a worm?
    a) A virus requires human interaction to spread, while a worm can spread automatically
    b) A virus can be removed easily, while a worm is difficult to remove
    c) A virus can infect only one computer, while a worm can infect multiple computers
    d) None of the above
34. What is a firewall?
    a) A hardware device that protects a network from unauthorized access
    b) A software program that protects a computer from malware
    c) A hardware device that connects two or more networks together
    d) A software program that allows remote access to a computer
35. What is a router?
    a) A hardware device that connects two or more networks together
    b) A software program that allows remote access to a computer
    c) A hardware device that protects a network from unauthorized access
    d) A software program that protects a computer from malware
36. What is a modem?
    a) A device that connects a computer to a network
    b) A device that converts digital signals to analog signals and vice versa
    c) A device that protects a computer from malware
    d) A software program that allows remote
37. Which of the following is a hardware component of a computer?
    a) Compiler
    b) Operating system
    c) Keyboard
    d) Spreadsheet
38. Which of the following is a software component of a computer?
    a) RAM
    b) CPU
    c) Hard disk
    d) Word processor
39. Which of the following is not an input device?
    a) Mouse
    b) Keyboard
    c) Monitor
    d) Scanner
40. Which of the following is not a storage device?
    a) Hard disk
    b) CD-ROM
    c) RAM
    d) USB drive
41. Which of the following is not a programming language?
    a) Java
    b) C++
    c) Python
    d) Photoshop
42. Which of the following is not a type of computer network?
    a) LAN
    b) WAN
    c) VPN
    d) MAN
43. Which of the following is not an operating system?
    a) Windows
    b) Linux
    c) Mac OS
    d) Microsoft Office
44. Which of the following is a type of computer virus?
    a) Trojan
    b) Worm
    c) Spyware
    d) All of the above
45. Which of the following is a type of computer memory that is volatile?
    a) RAM
    b) ROM
    c) Flash memory
    d) Hard disk
46. Which of the following is not a type of computer processor?
    a) Intel Core i7
    b) AMD Ryzen 5
    c) NVIDIA GeForce RTX 3080
    d) ARM Cortex-A78
47. Which of the following is a type of computer port?
    a) USB
    b) HDMI
    c) Ethernet
    d) All of the above
48. Which of the following is a type of computer input/output device?
    a) Printer
    b) Scanner
    c) Webcam
    d) All of the above
49. Which of the following is not a type of computer monitor?
    a) CRT
    b) LCD
    c) LED
    d) DVD
50. Which of the following is a type of computer keyboard layout?
    a) QWERTY
    b) ABCDEF
    c) 123456
    d) None of the above
51. Which of the following is a type of computer file format?
    a) PDF
    b) DOCX
    c) MP3
    d) All of the above
52. Which of the following is a type of computer network topology?
    a) Star
    b) Mesh
    c) Ring
    d) All of the above
53. Which of the following is a type of computer algorithm?
    a) Bubble sort
    b) QuickTime
    c) Apple pie
    d) None of the above
54. Which of the following is a type of computer memory that is non-volatile?
    a) RAM
    b) ROM
    c) Hard disk
    d) All of the above
55. Which of the following is a type of computer programming paradigm?
    a) Object-oriented
    b) Procedural
    c) Functional
    d) All of the above
56. Which of the following is a type of computer software license?
    a) Open source
    b) Closed source
    c) Freeware
    d) All of the above
57. Which of the following is a programming language?
    a) RAM
    b) CPU
    c) Java
    d) Hard disk
58. Which of the following is not a programming language?
    a) Python
    b) C++
    c) HTML
    d) Microsoft Excel
59. What is the purpose of a compiler in programming?
    a) To execute the program
    b) To translate the program into machine code
    c) To debug the program
    d) To store the program
60. What is the purpose of an interpreter in programming?
    a) To execute the program
    b) To translate the program into machine code
    c) To debug the program
    d) To store the program
61. Which of the following is an example of a high-level programming language?
    a) Assembly language
    b) C++
    c) Machine language
    d) None of the above
62. Which of the following is an example of a low-level programming language?
    a) Python
    b) C++
    c) Machine language
    d) None of the above
63. Which of the following is a data type in programming?
    a) Compiler
    b) Variable
    c) Function
    d) Library
64. Which of the following is not a data type in programming?
    a) Integer
    b) Float
    c) Double
    d) Compiler
65. Which of the following is a control structure in programming?
    a) Data type
    b) Loop
    c) Function
    d) Compiler
66. Which of the following is not a control structure in programming?
    a) If-else statement
    b) Loop
    c) Function
    d) Switch statement
67. Which of the following is a data structure in programming?
    a) Array
    b) Function
    c) Compiler
    d) Variable
68. Which of the following is not a data structure in programming?
    a) Variable
    b) Stack
    c) Queue
    d) Linked list
69. Which of the following is a programming paradigm?
    a) Object-oriented
    b) Structured
    c) Functional
    d) All of the above
70. Which of the following is not a programming paradigm?
    a) Object-oriented
    b) Structured
    c) Imperative
    d) Compiler
71. Which of the following is a programming concept?
    a) Inheritance
    b) Loop
    c) Function
    d) All of the above
72. Which of the following is not a programming concept?
    a) Inheritance
    b) Encapsulation
    c) Polymorphism
    d) Compiler
73. Which of the following is a method of debugging a program?
    a) Unit testing
    b) Integration testing
    c) Regression testing
    d) All of the above
74. Which of the following is not a method of debugging a program?
    a) Breakpoint
    b) Stepping through code
    c) Rebooting the computer
    d) Print statements
75. Which of the following is a way to improve program efficiency?
    a) Code optimization
    b) Code refactoring
    c) Code review
    d) All of the above
76. Which of the following is not a way to improve program efficiency?
    a) Adding comments to code
    b) Reducing redundant code
    c) Using efficient data structures
    d) Code optimization
77. Which of the following is not an advantage of using arrays?
    a) Efficient access to elements
    b) Easy to manipulate and process large amounts of data
    c) Supports only homogeneous data
    d) Can be easily resized
78. What is the index of the first element in an array?
    a) 0
    b) 1
    c) -1
    d) None of the above
79. Which of the following is an example of a one-dimensional array?
    a) [[1, 2], [3, 4]]
    b) [1, 2, 3, 4]
    c) [1, [2, 3], 4]
    d) None of the above
80. Which of the following is an example of a two-dimensional array?
    a) [1, 2, 3, 4]
    b) [[1, 2], [3, 4]]
    c) [1, [2, 3], 4]
    d) None of the above
81. What is the size of an array?
    a) The number of elements it contains
    b) The number of bytes it occupies in memory
    c) The number of dimensions it has
    d) None of the above
82. What is the time complexity of accessing an element in an array?
    a) O(n)
    b) O(log n)
    c) O(1)
    d) O(n^2)
83. What is the time complexity of searching an element in an unsorted array?
    a) O(n)
    b) O(log n)
    c) O(1)
    d) O(n^2)
84. What is the time complexity of searching an element in a sorted array using binary search?
    a) O(n)
    b) O(log n)
    c) O(1)
    d) O(n^2)
85. What is the time complexity of inserting an element in the middle of an array?
    a) O(n)
    b) O(log n)
    c) O(1)
    d) O(n^2)
86. What is the time complexity of deleting an element from the middle of an array?
    a) O(n)
    b) O(log n)
    c) O(1)
    d) O(n^2)
87. What is the maximum number of elements that can be stored in an array in C programming language?
    a) 32767
    b) 65535
    c) 2147483647
    d) None of the above
88. What is the syntax to declare an array in C programming language?
    a) array[] = {1, 2, 3, 4}
    b) int array[4] = {1, 2, 3, 4}
    c) int array = {1, 2, 3, 4}
    d) None of the above
89. What is the syntax to access the nth element of an array in C programming language?
    a) array[n]
    b) array(n)
    c) array{n}
    d) None of the above
90. Which of the following is not a function in the array module of Python programming language?
    a) array()
    b) append()
    c) extend()
    d) remove()
91. What is the syntax to declare an array in Java programming language?
    a) array[] = {1, 2, 3, 4}
    b) int[] array = {1, 2, 3, 4}
    c) int array = {1, 2, 3, 4}
    d) None of the above
92. What is the syntax to access the nth element of an array in Java programming language?
    a) array[n]
    b) array(n)
    c) arrayn
    d) array”n”
93. Java is a __ programming language.
    a) Compiled
    b) Interpreted
    c) Both a and b
    d) None of the above
94. Java was developed by __.
    a) James Gosling
    b) Bill Gates
    c) Steve Jobs
    d) None of the above
95. Java was originally developed for __.
    a) Personal computers
    b) Web development
    c) Embedded systems
    d) None of the above
96. Which of the following is not a feature of Java?
    a) Platform independence
    b) Object-oriented programming
    c) Strong typing
    d) Pass by reference
97. Which of the following is not a data type in Java?
    a) int
    b) double
    c) string
    d) boolean
98. What is the entry point for a Java program?
    a) Main method
    b) Start method
    c) Run method
    d) None of the above
99. Which of the following keywords is used to define a class in Java?
    a) class
    b) def
    c) function
    d) None of the above
100. Which of the following keywords is used to define a method in Java?
     a) method
     b) def
     c) function
     d) None of the above

:Answers:

1	a) Central Processing Unit
2	a) Random Access Memory
3	a) Read Only Memory
4	a) Basic Input Output System
5	d) RAM
6	c) CD-ROM
7	d) RAM
8	b) ROM
9	d) All of the above
10	c) Hard Disk Drive
11	b) Scanner
12	c) Printer
13	b) Mouse
14	b) Monitor
15	d) Scanner
16	b) C++
17	c) C Language
18	a) Assembly Language
19	a) HTML
20	b) Python
21	d) All of the above
22	d) All of the above
23	a) Router
24	a) Google Chrome
25	a) Electronic device
26	a) Central processing unit (CPU)
27	b) Central Processing Unit
28	c) A circuit board that connects the CPU, memory, and other hardware components
29	d) All of the above
30	a) .docx
31	d) Windows
32	a) Uniform Resource Locator
33	a) A virus requires human interaction to spread, while a worm can spread automatically.
34	a) A hardware device that protects a network from unauthorized access
35	a) A hardware device that connects two or more networks together
36	b) A device that converts digital signals to analog signals and vice versa
37	c) Keyboard
38	d) Word processor
39	c) Monitor
40	c) RAM
41	d) Photoshop
42	d) MAN
43	d) Microsoft Office
44	d) All of the above (Trojan, Worm, Spyware)
45	a) RAM
46	c) NVIDIA GeForce RTX 3080
47	d) All of the above (USB, HDMI, Ethernet)
48	d) All of the above (Printer, Scanner, Webcam)
49	d) DVD
50	a) QWERTY
51	d) All of the above (PDF, DOCX, MP3)
52	d) All of the above (Star, Mesh, Ring)
53	a) Bubble sort
54	b) ROM
55	d) All of the above
56	d) All of the above
57	c) Java
58	d) Microsoft Excel
59	b) To translate the program into machine code
60	a) To execute the program
61	b) C++
62	c) Machine language
63	b) Variable
64	d) Compiler
65	b) Loop
66	a) If- else statement
67	a) Array
68	d) Compiler
69	d) All of the above (Object-oriented, Structured, and Functional)
70	d) Compiler
71	d) All of the above (Inheritance, Loop, and Function)
72	d) Compiler
73	d) All of the above (Unit testing, Integration testing, and Regression testing)
74	c) Rebooting the computer
75	d) All of the above (Code optimization, Code refactoring, and Code review)
76	a) Adding comments to code
77	d) Can be easily resized
78	a) 0
79	b) [1, 2, 3, 4]
80	b) [[1, 2], [3, 4]]
81	a) The number of elements it contains
82	c) O(1)
83	a) O(n)
84	b) O(log n)
85	a) O(n)
86	a) O(n)
87	a) 32767 (assuming a 2-byte integer)
88	b) int array[4] = {1, 2, 3, 4}
89	a) array[n]
90	d) remove()
91	b) int[] array = {1, 2, 3, 4}
92	a) array[n]
93	c) Both a and b
94	a) James Gosling
95	c) Embedded systems
96	d) Pass by reference
97	c) string
98	a) Main method
99	a) class
100	d) None of the above

Also Read: Basic Computer Knowledge Questions & Answers(Quiz)

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