JAMB Computer Studies questions

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

1. Question 101· Data processing and information· JAMB

   A record in a file is

   • Aa program
   • Ba single character
   • Ca whole database
   • Da collection of related fields about one item

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2. Question 102· Data processing and information· JAMB

   Information technology refers to

   • Athe use of computers and telecommunications to store, process and transmit information
   • Bonly typing
   • Conly printing
   • Donly radio

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3. Question 103· Data processing and information· JAMB

   Processed data that is meaningful to the user is

   • Anoise
   • Braw data
   • Cinput
   • Dinformation

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4. Question 104· Data processing and information· JAMB

   SQL is a language used to

   • Aquery and manage databases
   • Bdesign hardware
   • Ccreate animations
   • Dwrite operating systems only

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5. Question 105· Data processing and information· JAMB

   Data integrity means that data is

   • Alarge
   • Bsecret
   • Caccurate and consistent
   • Ddeleted

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6. Question 106· Data processing and information· JAMB

   The system development life cycle begins with

   • Aproblem identification and a feasibility study
   • Bmaintenance
   • Ccoding
   • Dtesting

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7. Question 107· Data processing and information· JAMB

   Data validation checks that data is

   • Areasonable and within acceptable rules
   • Bcorrectly copied from the source
   • Cencrypted
   • Dbacked up

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8. Question 108· Data processing and information· JAMB

   In sequential file organisation, records are

   • Aindexed only
   • Breached directly by address
   • Cstored randomly
   • Dstored and read one after another in order

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9. Question 109· Data processing and information· JAMB

   A presence check ensures that

   • Adata is sorted
   • Bdata is in range
   • Cdata is numeric
   • Da required field is not left empty

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10. Question 110· Data processing and information· JAMB

    Data redundancy means

    • Adata loss
    • Bunnecessary duplication of data
    • Cdata encryption
    • Ddata sorting

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11. Question 111· 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

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12. Question 112· 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

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13. Question 113· Data processing and information· JAMB

    Checking that data entered is reasonable and within allowed limits is

    • Avalidation
    • Bsorting
    • Cmerging
    • Dformatting

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14. Question 114· Data processing and information· JAMB

    A check digit is used to

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

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15. Question 115· 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

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16. Question 116· Data processing and information· JAMB

    A key field is used to

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

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17. Question 117· 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

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    Explanation and discussion

18. Question 118· Evolution of computing· JAMB

    Which generation of computers introduced integrated circuits (ICs)?

    • Afirst
    • Bthird
    • Csecond
    • Dfifth

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19. Question 119· Evolution of computing· JAMB

    The abacus is an early

    • Aprinting device
    • Bstorage device
    • Ccalculating device
    • Dinput sensor

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20. Question 120· Evolution of computing· JAMB

    Charles Babbage is called the father of the computer because he designed the

    • ANapier's bones
    • Babacus
    • CAnalytical Engine
    • DENIAC

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    Explanation and discussion