JAMB and WAEC Computer Studies questions

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

1. Question 101· Computer hardware and the CPU· JAMB

   A CPU with a 32-bit address bus can address up to

   • A32 MB
   • B4 GB of memory
   • C1 GB
   • D64 GB

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2. Question 102· Computer hardware and the CPU· JAMB

   Small, very fast storage locations inside the CPU are

   • Aprinter buffers
   • BROM chips
   • Chard disks
   • Dregisters

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3. Question 103· Computer hardware and the CPU· WAEC

   A power supply unit converts

   • Alight to sound
   • BDC to AC
   • Cdata to signals
   • DAC mains power to DC for the computer

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   Explanation and discussion

4. Question 104· Computer hardware and the CPU· JAMB

   The motherboard is

   • Athe main circuit board connecting all components
   • Ba type of monitor
   • Can input device
   • Da storage disk

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5. Question 105· Computer hardware and the CPU· JAMB

   The fetch-decode-execute cycle is carried out by the

   • ACPU
   • Bprinter
   • Cmonitor
   • Dkeyboard

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6. Question 106· Computer hardware and the CPU· JAMB

   The CPU's machine cycle is

   • Ainput, output, store
   • Bfetch, decode, execute
   • Cread, write, delete
   • Dboot, run, shut down

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7. Question 107· Computer hardware and the CPU· WAEC

   The main circuit board that connects all components of a computer is the

   • Ahard disk
   • Bmotherboard
   • Cpower supply unit
   • Dexpansion card

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8. Question 108· Computer hardware and the CPU· WAEC

   The control unit

   • Adirects and coordinates the operations of the computer
   • Bstores data permanently
   • Cprints output
   • Dperforms arithmetic

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9. Question 109· Computer hardware and the CPU· JAMB

   Which of these is NOT a component of the CPU?

   • Athe control unit
   • Bthe arithmetic logic unit
   • Cthe hard disk
   • Dthe registers

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10. Question 110· Computer hardware and the CPU· WAEC

    The brain of the computer is the

    • Akeyboard
    • Bmonitor
    • Ccentral processing unit
    • Dprinter

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11. Question 111· Computer hardware and the CPU· WAEC

    During frequent power failures, a school computer lab should use

    • Aan extra keyboard
    • Ba plotter
    • Ca scanner
    • Dan uninterruptible power supply

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    Explanation and discussion

12. Question 112· Computer hardware and the CPU· WAEC

    The data bus carries

    • Adata between the CPU, memory and devices
    • Belectric power only
    • Csound
    • Dnetwork traffic only

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13. Question 113· Computer hardware and the CPU· WAEC

    The processing speed of a CPU is measured in

    • Adots per inch
    • Bgigabytes
    • Cmegapixels
    • Dgigahertz

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14. Question 114· Computer hardware and the CPU· JAMB

    The control unit of the CPU

    • Astores data permanently
    • Bdirects and coordinates the operations of the computer
    • Cdisplays output
    • Dprints documents

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    Explanation and discussion

15. Question 115· Computer hardware and the CPU· WAEC

    The repeated cycle by which the CPU processes each instruction is the

    • Afetch–decode–execute cycle
    • Binput–output cycle
    • Csave–print cycle
    • Dboot–shutdown cycle

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16. Question 116· Computer hardware and the CPU· WAEC

    A UPS is used to

    • Asupply power for a short time when mains power fails
    • Bincrease processing speed
    • Cscan documents
    • Dstore files

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17. Question 117· Computer hardware and the CPU· JAMB

    Decoding an instruction means

    • Astoring it on disk
    • Bworking out what the instruction requires the CPU to do
    • Cprinting it
    • Ddeleting it

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18. Question 118· Computer hardware and the CPU· JAMB

    A hybrid computer combines

    • Aanalogue and digital features
    • Btwo monitors
    • Chardware and software
    • Dinput and output devices

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19. Question 119· Computer hardware and the CPU· JAMB

    A bus in a computer is

    • Aa program
    • Ba vehicle
    • Ca type of printer
    • Da set of lines that carries signals between components

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20. Question 120· Computer hardware and the CPU· JAMB

    A heat sink and fan on the processor are used to

    • Aprint faster
    • Bincrease memory
    • Cprevent overheating
    • Dconnect to the internet

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    Explanation and discussion