JAMB Data Processing Past Questions and Answers (CBT Practice)

 

Introduction

Data Processing is the study of how data is collected, stored, processed, and converted into useful information using computers and digital systems. It covers computer fundamentals, data management, databases, internet technology, office applications, and information systems. In JAMB, success in Data Processing requires understanding key computer concepts and practicing CBT-style questions regularly. This post contains 100 JAMB-standard objective questions with properly shuffled options A–D and correct answers.

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OBJECTIVE QUESTIONS

Instruction: Choose the correct option A–D.

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1–25: Computer Basics

1. A computer is a device that
   A. cooks food B. processes data into information C. prints only D. stores books
   Answer: B

2. Data refers to
   A. processed information B. raw facts and figures C. output only D. software only
   Answer: B

3. Information is
   A. raw data B. processed data C. hardware D. input only
   Answer: B

4. The brain of the computer is the
   A. keyboard B. CPU C. monitor D. mouse
   Answer: B

5. CPU stands for
   A. Central Processing Unit B. Computer Personal Unit C. Control Processing User D. Central Program Utility
   Answer: A

6. An input device is
   A. monitor B. keyboard C. printer D. speaker
   Answer: B

7. An output device is
   A. keyboard B. mouse C. monitor D. scanner
   Answer: C

8. Storage device is used to
   A. input data B. save data C. print data D. delete data
   Answer: B

9. RAM means
   A. Random Access Memory B. Read All Memory C. Run Active Machine D. Remote Access Module
   Answer: A

10. ROM is
    A. volatile memory B. non-volatile memory C. external device D. software
    Answer: B

11. Software refers to
    A. physical parts B. programs that run on a computer C. cables D. hardware only
    Answer: B

12. Hardware refers to
    A. programs B. physical components of a computer C. data only D. internet
    Answer: B

13. The operating system is
    A. application software B. system software C. hardware D. input device
    Answer: B

14. Example of operating system is
    A. MS Word B. Windows C. Excel D. Paint
    Answer: B

15. Application software is used for
    A. specific tasks B. hardware repair C. electricity supply D. networking only
    Answer: A

16. Computer works based on
    A. emotion B. instructions C. guesswork D. feelings
    Answer: B

17. A bit is
    A. binary digit B. decimal number C. file D. folder
    Answer: A

18. A byte is
    A. 1 bit B. 4 bits C. 8 bits D. 16 bits
    Answer: C

19. The binary system uses
    A. 0 and 1 B. 1–9 C. A–Z D. symbols only
    Answer: A

20. The smallest unit of data is
    A. byte B. bit C. file D. record
    Answer: B

21. The output of processing data is called
    A. information B. input C. hardware D. storage
    Answer: A

22. A computer system includes
    A. hardware and software B. only hardware C. only software D. only users
    Answer: A

23. The device used to type data is
    A. printer B. keyboard C. monitor D. speaker
    Answer: B

24. The device used to display output is
    A. CPU B. monitor C. keyboard D. scanner
    Answer: B

25. A scanner is used to
    A. print documents B. convert paper to digital form C. store files D. delete data
    Answer: B

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26–50: Data Processing Concepts

26. Data processing means
    A. destroying data B. converting data into useful information C. printing only D. storing books
    Answer: B

27. The data processing cycle includes
    A. input, processing, output B. start, stop, wait C. open, close, save D. write, print, delete
    Answer: A

28. Input refers to
    A. sending data out B. entering data into the computer C. deleting data D. storing data
    Answer: B

29. Processing is done by the
    A. monitor B. CPU C. keyboard D. printer
    Answer: B

30. Output refers to
    A. entering data B. results of processing C. storing data D. deleting data
    Answer: B

31. Storage is used to
    A. display data B. keep data for future use C. process data D. input data
    Answer: B

32. Example of storage device is
    A. CPU B. hard disk C. keyboard D. monitor
    Answer: B

33. A file is
    A. collection of records B. single letter C. hardware D. program only
    Answer: A

34. A record is
    A. collection of fields B. single character C. program D. device
    Answer: A

35. A field is
    A. smallest data item in a record B. full database C. hardware part D. file system
    Answer: A

36. Database is used for
    A. storing organized data B. playing music C. printing only D. browsing only
    Answer: A

37. DBMS stands for
    A. Data Backup Machine System B. Database Management System C. Digital Binary Memory System D. Data Base Main System
    Answer: B

38. Primary key is used to
    A. delete data B. uniquely identify records C. print data D. store images
    Answer: B

39. Sorting means
    A. arranging data in order B. deleting data C. copying data D. printing data
    Answer: A

40. Filtering means
    A. showing selected data B. deleting files C. storing data D. copying files
    Answer: A

41. Data validation ensures
    A. correct data entry B. data deletion C. hardware damage D. virus creation
    Answer: A

42. Backup means
    A. deleting files B. making copies of data C. printing only D. hiding data
    Answer: B

43. Cloud computing means
    A. offline storage B. internet-based storage and services C. no storage D. hardware only
    Answer: B

44. Computer network is
    A. one computer B. connected computers C. printer only D. software only
    Answer: B

45. Internet is
    A. local machine B. global network of computers C. printer system D. CPU system
    Answer: B

46. A browser is used to
    A. type documents B. access websites C. store files D. delete data
    Answer: B

47. Example of browser is
    A. Chrome B. Excel C. CPU D. RAM
    Answer: A

48. URL stands for
    A. Uniform Resource Locator B. Unified Record Link C. User Random Link D. Universal Remote Line
    Answer: A

49. Email is used for
    A. sending messages electronically B. farming C. printing D. storing hardware
    Answer: A

50. Password is used for
    A. decoration B. security C. printing D. storage
    Answer: B

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51–100: ICT, Security and Applications

51. ICT means
    A. Internet Computer Technology B. Information and Communication Technology C. Internal Control Tool D. Integrated Coding Theory
    Answer: B

52. One advantage of ICT is
    A. slow communication B. fast communication C. no communication D. reduced data
    Answer: B

53. Computer virus is
    A. useful software B. harmful software C. hardware D. input device
    Answer: B

54. Antivirus is used to
    A. create viruses B. protect computer from viruses C. delete hardware D. store data
    Answer: B

55. Firewall is used to
    A. block unauthorized access B. print files C. store data D. increase speed
    Answer: A

56. Cybercrime is
    A. legal activity B. illegal activity on the internet C. farming D. teaching
    Answer: B

57. Hacking is
    A. authorized access B. unauthorized access C. typing D. printing
    Answer: B

58. Spreadsheet software is used for
    A. calculations and tables B. browsing only C. drawing only D. hardware repair
    Answer: A

59. Example of spreadsheet is
    A. MS Excel B. MS Word C. Paint D. Chrome
    Answer: A

60. Word processing software is used for
    A. typing documents B. browsing C. gaming D. networking
    Answer: A

61. Example of word processor is
    A. MS Word B. Excel C. CPU D. RAM
    Answer: A

62. Formula in Excel begins with
    A. = B. + C. - D. *
    Answer: A

63. Function in Excel is
    A. manual calculation B. pre-defined formula C. virus D. file
    Answer: B

64. Spreadsheet rows are labeled with
    A. numbers B. letters C. symbols D. colors
    Answer: A

65. Columns in spreadsheet are labeled with
    A. numbers B. letters C. shapes D. codes
    Answer: B

66. Algorithm is
    A. step-by-step solution B. hardware C. virus D. file
    Answer: A

67. Flowchart is
    A. diagram of algorithm B. hardware C. software D. virus
    Answer: A

68. Programming language is used to
    A. cook food B. write instructions for computer C. print only D. store data
    Answer: B

69. Example of programming language is
    A. Python B. Excel C. CPU D. RAM
    Answer: A

70. Computer ethics refers to
    A. responsible use of computers B. hacking C. virus creation D. fraud
    Answer: A

71. Data security means
    A. protecting data B. deleting data C. printing data D. sharing freely
    Answer: A

72. Encryption is used to
    A. protect data B. delete data C. print data D. store files
    Answer: A

73. Backup helps to
    A. prevent data loss B. increase viruses C. reduce storage D. damage files
    Answer: A

74. Hardware failure refers to
    A. physical damage B. software error C. typing error D. internet issue
    Answer: A

75. Software failure refers to
    A. program error B. hardware break C. screen damage D. power failure
    Answer: A

76. Computer literacy means
    A. ability to use computers B. ignorance C. destruction of computers D. avoiding ICT
    Answer: A

77. E-commerce is
    A. online buying and selling B. farming C. mining D. teaching
    Answer: A

78. Online payment uses
    A. cash only B. electronic systems C. paper only D. land only
    Answer: B

79. Social media is used for
    A. communication B. farming C. mining D. printing
    Answer: A

80. Example of social media is
    A. Facebook B. CPU C. RAM D. Excel
    Answer: A

81. Data accuracy means
    A. correct data B. wrong data C. fake data D. deleted data
    Answer: A

82. Data integrity means
    A. consistency of data B. corruption C. deletion D. printing
    Answer: A

83. System software manages
    A. hardware and software resources B. farming C. transport D. trade
    Answer: A

84. Application software performs
    A. specific tasks B. hardware repair C. electricity supply D. mining
    Answer: A

85. Operating system controls
    A. computer resources B. weather C. farming D. trade
    Answer: A

86. BIOS means
    A. Basic Input Output System B. Binary Input Output System C. Basic Internal Operation System D. Backup Input Output System
    Answer: A

87. ROM is
    A. non-volatile memory B. volatile memory C. external storage D. software
    Answer: A

88. RAM is
    A. temporary memory B. permanent memory C. external device D. software
    Answer: A

89. Volatile memory loses data when
    A. power is off B. power is on C. typing starts D. printing starts
    Answer: A

90. Non-volatile memory retains data when
    A. power is off B. power is on C. rebooting D. printing starts
    Answer: A

91. Computer hardware includes
    A. physical parts B. programs C. data D. internet
    Answer: A

92. Software development involves
    A. coding B. farming C. trading D. mining
    Answer: A

93. Debugging means
    A. removing errors in program B. creating virus C. printing files D. deleting hardware
    Answer: A

94. Maintenance of computer includes
    A. cleaning and repair B. destroying system C. increasing viruses D. ignoring faults
    Answer: A

95. ICT improves
    A. communication B. confusion C. delay D. ignorance
    Answer: A

96. Data processing improves
    A. decision making B. confusion C. delay D. errors
    Answer: A

97. Computer output can be
    A. soft copy or hard copy B. only paper C. only screen D. only sound
    Answer: A

98. Hard copy is
    A. printed document B. digital file C. software D. database
    Answer: A

99. Soft copy is
    A. electronic document B. printed paper C. hardware D. machine
    Answer: A

100. The main aim of data processing is to
     A. convert data into useful information B. destroy data C. reduce ICT D. stop computing
     Answer: A

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EXAM SUCCESS TIPS

• Master basic computer definitions and functions.
• Practice data processing cycle (input–process–output).
• Learn database and DBMS concepts thoroughly.
• Understand internet, networking, and cybersecurity basics.
• Revise software types and their uses.
• Practice Excel and spreadsheet operations.
• Study algorithms and flowcharts.
• Take CBT practice tests regularly.
• Focus on ICT applications in real life.
• Revise past JAMB questions under timed conditions.