WAEC Data Processing past questions and answers

Checked by the Skolra question team · Last updated 15 October 2026

WAEC Data Processing: 365 objective past questions from 10 papers between 2015 and 2024, each with the answer and an explanation. Here are ten.

1. 1.Two computers, X and Y are such that the processor in X has a word size of 32 bits while that of Y is 16 bits. Which of the following statement is true?
   1. A
      X can process more data per instruction cycle than Y
      Correct
   2. B
      Y can process more data per instruction cycle than X
   3. C
      Y has a larger memory capacity than X
   4. D
      X and Y process data at the same rate
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   Answer: A

   A larger word size means the processor can handle more bits of data in a single operation, so the 32-bit processor in X handles more data per cycle than the 16-bit processor in Y.
2. 2.A program designed to detect and prevent malicious programs from a computer system is
   1. A
      an assembler
   2. B
      a spreadsheet program
   3. C
      a compiler
   4. D
      antivirus software
      Correct
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   Answer: D

   Antivirus software is specifically designed to detect, block and remove malicious programs from a computer system.
3. 3.The following feature are found in the toolbox of CorelDraw application except
   1. A
      Pick tool
   2. B
      Shape tool
   3. C
      Mail merge tool
      Correct
   4. D
      Crop tool
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   Answer: C

   Pick, Shape and Crop tools are all standard CorelDraw toolbox items used for selecting and editing objects; mail merge is a word-processing feature (e.g. in MS Word), not a CorelDraw toolbox tool.
4. 4.The information transmission medium from location A to location B in space is called
   1. A
      Modem
   2. B
      Channel
      Correct
   3. C
      Router
   4. D
      Protocol
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   Answer: B

   The channel is the medium through which information travels from a sending location to a receiving location in a communication system.
5. 5.In hexadecimal system, D is equivalent to
   1. A
      13
      Correct
   2. B
      12
   3. C
      14
   4. D
      11
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   Answer: A

   In the hexadecimal numbering system, the digits after 9 are represented by letters A to F, where A equals 10, B equals 11, C equals 12 and D equals 13 in decimal.
6. 6.Internet banking entails
   1. A
      Physically depositing cash with a teller
   2. B
      Performing banking transactions online without visiting the bank physically
      Correct
   3. C
      Printing bank statements at the banking hall
   4. D
      Manually recording transactions in a ledger book
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   Answer: B

   Internet banking allows customers to carry out transactions such as fund transfers and balance checks over the internet from any location, removing the need to visit the bank in person.
7. 7.The operation of checking input data against specified criteria is referred to as
   1. A
      editing
   2. B
      validation
      Correct
   3. C
      sorting
   4. D
      verification
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   Answer: B

   Validation is the process of checking that input data meets specified rules or criteria, such as correct type, format and range, before it is accepted.
8. 8.A file kept in case of an accident or natural disaster is called
   1. A
      backup file
      Correct
   2. B
      reference file
   3. C
      master file
   4. D
      transaction file
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   Answer: A

   A backup file is a duplicate copy kept so that data can be restored if the original is lost through an accident or disaster.
9. 9.Arrange the following steps in the correct order for editing data type in data sheet view of a Microsoft Access database I. Click the type of data that that will be entered into the fields II. Click the data sheet tab on the ribbon III. Click the field you wish to define IV. Click the 'down' arrow next to the data type
   1. A
      IV, I, II, III
   2. B
      III, II, I, IV
   3. C
      II, III, IV, I
      Correct
   4. D
      I, II, III, IV
   Show answerHide answer

   Answer: C

   You first click the Datasheet tab on the ribbon, then click the field to define, then click the arrow next to Data Type, and finally click the data type to enter.
10. 10.A database contains a list of customers and their phone numbers. What type of relationship describes a customer having multiple phone numbers?
    1. A
       One-to-one relationship
    2. B
       One-to-many relationship
       Correct
    3. C
       Self relationship
    4. D
       Many-to-many relationship
    Show answerHide answer

    Answer: B

    Since a single customer can be linked to several phone numbers while each phone number belongs to only one customer, this is described as a one-to-many relationship.

The questions come from past JAMB, WAEC and NECO papers. We use software to help write the answer options and explanations, and every answer is checked twice before it goes on the site. How we check

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