WAEC Data Processing 2015 past questions

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

Ten questions from the 2015 WAEC Data Processing paper, with answers and explanations. We hold 38 questions from this paper, and the Skolra app has all of them.

WAEC Data Processing 2015 questions and answers

1. 1.In a relational database management system, files are organized as relations and
   1. A
      indexed alphabetically by file name only
   2. B
      linked together by means of common fields
      Correct
   3. C
      accessed strictly in sequential order only
   4. D
      stored only as independent flat files with no links
   Show answerHide answer

   Answer: B

   In a relational database, separate tables (relations) are connected to one another through common fields or keys, which allows data from different tables to be combined and retrieved together.
2. 2.Planning and creating websites are stages in?
   1. A
      networking
   2. B
      web design
      Correct
   3. C
      data processing
   4. D
      database administration
   Show answerHide answer

   Answer: B

   Planning a website's structure and then creating its pages are core stages of web design and development.
3. 3.A program developed to protect the computer from malicious software is referred to as
   1. A
      device driver
   2. B
      antivirus software
      Correct
   3. C
      operating system
   4. D
      compiler
   Show answerHide answer

   Answer: B

   Antivirus software is specifically designed to detect, prevent and remove malicious programs such as viruses, worms and trojans.
4. 4.Which of the following is not an application of computers?
   1. A
      weather forecasting
   2. B
      computerized banking
   3. C
      traditional farming carried out entirely by manual hand tools
      Correct
   4. D
      computer-aided education
   Show answerHide answer

   Answer: C

   Education, banking and weather forecasting all rely heavily on computer systems, while purely manual, tool-based farming involves no computer application.
5. 5.The following are destructive software except
   1. A
      worm
   2. B
      computer virus
   3. C
      antivirus
      Correct
   4. D
      trojan horse
   Show answerHide answer

   Answer: C

   Viruses, worms and trojan horses are designed to damage or disrupt systems, whereas antivirus software is designed to protect against such damage rather than cause it.
6. 6.A field in a database table is also known as
   1. A
      row
   2. B
      index
   3. C
      record
   4. D
      column
      Correct
   Show answerHide answer

   Answer: D

   In a database table, a field is also referred to as a column, which holds a single attribute of data across all records.
7. 7.Convert 47 (base 8) to its binary equivalent.
   1. A
      100111
      Correct
   2. B
      101001
   3. C
      111001
   4. D
      100101
   Show answerHide answer

   Answer: A

   47 in base 8 equals (4 x 8) + 7 = 39 in decimal; converting each octal digit to its 3-bit binary form gives 4 = 100 and 7 = 111, so 47 (base 8) = 100111 in binary.
8. 8.The property of a system software that enables it to execute more than one program at a time is referred to as
   1. A
      networking
   2. B
      multimedia
   3. C
      multitasking
      Correct
   4. D
      multiplexing
   Show answerHide answer

   Answer: C

   Multitasking is the capability of a system software to run and manage more than one program at the same time.
9. 9.Which of these measures would not secure data in database?
   1. A
      sharing the database login details with everyone
      Correct
   2. B
      use of password protection
   3. C
      restricting access through user authorization
   4. D
      encrypting sensitive files
   Show answerHide answer

   Answer: A

   Passwords, encryption and restricted authorization all help secure data, but freely sharing login details with everyone defeats data security.
10. 10.Which of the following is not a transmission medium?
    1. A
       coaxial cable
    2. B
       modem
       Correct
    3. C
       fibre optic cable
    4. D
       twisted pair cable
    Show answerHide answer

    Answer: B

    Fibre optic, twisted pair and coaxial cables all physically carry signals between devices, whereas a modem is a device that converts signals rather than a transmission medium itself.

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

Spotted a wrong answer? Tell us from the app or on the contact page and we check it.

Practise all 38 questions we hold from the 2015 paper, on a timed CBT screen

Every question has the answer and an explanation, in the Skolra app.

Download for WindowsDownload for Mac

About the app · Skolra for Windows · Skolra for Mac