WAEC Computer Studies questions: Data processing and information

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

1. Question 1· Data processing and information· WAEC

   Verification of data entry can be done by

   • Adeleting the data
   • Bdouble entry and comparison
   • Cprinting only
   • Dusing a mouse

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2. Question 2· Data processing and information· WAEC

   Validation checks that data

   • Ais reasonable and within allowed limits
   • Bwas copied correctly from the source
   • Cis switched on
   • Dis printed

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3. Question 3· Data processing and information· WAEC

   Entering the same data twice and comparing the two entries is

   • Aencryption
   • Bvalidation
   • Cverification
   • Dindexing

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4. Question 4· Data processing and information· WAEC

   Real-time processing is required for

   • Ayearly reports
   • Bmonthly bills
   • Cair traffic control
   • Dprinting certificates

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5. Question 5· Data processing and information· WAEC

   Checking that an age entered lies between 10 and 25 is a

   • Aformat check
   • Bpresence check
   • Crange check
   • Dlength check

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6. Question 6· Data processing and information· WAEC

   Batch processing is suitable for

   • Aa payroll run at the end of each month
   • Bairline seat booking
   • CATM withdrawals
   • Donline chat

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7. Question 7· Data processing and information· WAEC

   A collection of related fields describing one item, such as one student, is a

   • Afile
   • Brecord
   • Cdatabase
   • Dbyte

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8. Question 8· Data processing and information· WAEC

   Real-time processing is needed for

   • Aarchiving old files
   • Bmonthly payrolls
   • Cend-of-year reports
   • Dairline seat reservations

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9. Question 9· Data processing and information· WAEC

   Information is

   • Araw facts
   • Bprocessed data that is meaningful
   • Chardware
   • Da program

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10. Question 10· Data processing and information· WAEC

    Raw facts that have not been processed are called

    • Adata
    • Binformation
    • Cknowledge
    • Doutput

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11. Question 11· 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

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12. Question 12· 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

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13. Question 13· 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

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14. Question 14· Data processing and information· WAEC

    Sorting arranges records

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

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15. Question 15· Data processing and information· WAEC

    Checking that data entered falls within an acceptable range is

    • Asorting
    • Bverification
    • Cvalidation
    • Dmerging

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16. Question 16· Data processing and information· WAEC

    Arranging records in alphabetical or numerical order is

    • Amerging
    • Bsorting
    • Cdeleting
    • Dprinting

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17. Question 17· Data processing and information· WAEC

    The basic data processing cycle is

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

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18. Question 18· Data processing and information· WAEC

    A collection of related records is a

    • Acharacter
    • Bfield
    • Cbyte
    • Dfile

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19. Question 19· 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

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20. Question 20· Data processing and information· WAEC

    Sorting data means

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

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    Explanation and discussion