JAMB and WAEC Computer Studies questions: Data processing and information

40 questions with answers and explanations. Tap an option to check yourself.

1. Question 21· Data processing and information· WAEC

   Raw facts that have not been processed are called

   • Adata
   • Binformation
   • Cknowledge
   • Doutput

   Show answer

   Explanation and discussion

2. Question 22· Data processing and information· JAMB

   Online processing means that

   • Aprocessing is done by hand
   • Bdata is processed later in batches
   • Cno processing occurs
   • Ddata is processed immediately as it is entered

   Show answer

   Explanation and discussion

3. Question 23· Data processing and information· WAEC

   The stages of the data processing cycle are

   • Atyping, printing and saving only
   • Binput, processing, output and storage
   • Cbooting and shutdown
   • Dscanning and copying

   Show answer

   Explanation and discussion

4. Question 24· Data processing and information· WAEC

   Processing transactions in groups at a set time, such as payroll at month end, is

   • Areal-time processing
   • Bbatch processing
   • Conline processing
   • Dinteractive processing

   Show answer

   Explanation and discussion

5. Question 25· Data processing and information· WAEC

   A primary key in a database

   • Ais a printer key
   • Bis a password
   • Cuniquely identifies each record
   • Dis optional for every table

   Show answer

   Explanation and discussion

6. Question 26· Data processing and information· WAEC

   Sorting arranges records

   • Ain a particular order
   • Binto different files
   • Crandomly
   • Dfor deletion

   Show answer

   Explanation and discussion

7. Question 27· Data processing and information· WAEC

   Checking that data entered falls within an acceptable range is

   • Asorting
   • Bverification
   • Cvalidation
   • Dmerging

   Show answer

   Explanation and discussion

8. Question 28· Data processing and information· WAEC

   Arranging records in alphabetical or numerical order is

   • Amerging
   • Bsorting
   • Cdeleting
   • Dprinting

   Show answer

   Explanation and discussion

9. Question 29· Data processing and information· WAEC

   The basic data processing cycle is

   • Ainput → processing → output
   • Boutput → input → processing
   • Cprocessing → output → input
   • Dstorage → printing → input

   Show answer

   Explanation and discussion

10. Question 30· Data processing and information· JAMB

    A transaction file contains

    • Aprograms
    • Bthe main permanent data
    • Crecords of day-to-day changes used to update the master file
    • Dbackups only

    Show answer

    Explanation and discussion

11. Question 31· Data processing and information· JAMB

    Checking that data entered is reasonable and within allowed limits is

    • Avalidation
    • Bsorting
    • Cmerging
    • Dformatting

    Show answer

    Explanation and discussion

12. Question 32· Data processing and information· WAEC

    A collection of related records is a

    • Acharacter
    • Bfield
    • Cbyte
    • Dfile

    Show answer

    Explanation and discussion

13. Question 33· Data processing and information· JAMB

    A check digit is used to

    • Acompress files
    • Bencrypt data
    • Csort records
    • Ddetect errors in codes such as ISBNs

    Show answer

    Explanation and discussion

14. Question 34· Data processing and information· JAMB

    A database management system (DBMS) allows users to

    • Aplay music
    • Bdraw pictures
    • Ccreate, store and retrieve data efficiently
    • Dbrowse the web

    Show answer

    Explanation and discussion

15. Question 35· Data processing and information· JAMB

    A key field is used to

    • Aidentify and sort records
    • Bcolour a record
    • Cdelete a file
    • Dprint a report

    Show answer

    Explanation and discussion

16. Question 36· Data processing and information· JAMB

    A master file contains

    • Aerror messages
    • Beach day's transactions only
    • Cprograms
    • Drelatively permanent main data such as customer details

    Show answer

    Explanation and discussion

17. Question 37· Data processing and information· WAEC

    Verification of data means checking that

    • Adata is sensible
    • Bdata has been copied correctly from its source
    • Cold data is deleted
    • Ddata is encrypted

    Show answer

    Explanation and discussion

18. Question 38· Data processing and information· WAEC

    Sorting data means

    • Aprinting it
    • Bdeleting it
    • Cencrypting it
    • Darranging it in order

    Show answer

    Explanation and discussion

19. Question 39· Data processing and information· WAEC

    Processing student examination results all together after the exams end is an example of

    • Abatch processing
    • Breal-time processing
    • Cinteractive processing
    • Donline booking

    Show answer

    Explanation and discussion

20. Question 40· Data processing and information· WAEC

    A field in a database is

    • Aa single item of data about a record, like surname
    • Ba whole table
    • Ca printed report
    • Da computer

    Show answer

    Explanation and discussion