JAMB and WAEC Computer Studies questions: Computer hardware and the CPU

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

1. Question 21· 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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   Explanation and discussion

2. Question 22· 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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   Explanation and discussion

3. Question 23· 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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   Explanation and discussion

4. Question 24· 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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   Explanation and discussion

5. Question 25· Computer hardware and the CPU· WAEC

   The brain of the computer is the

   • Akeyboard
   • Bmonitor
   • Ccentral processing unit
   • Dprinter

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6. Question 26· 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

7. Question 27· 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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   Explanation and discussion

8. Question 28· 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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   Explanation and discussion

9. Question 29· 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

10. Question 30· 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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    Explanation and discussion

11. Question 31· 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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    Explanation and discussion

12. Question 32· 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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13. Question 33· 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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    Explanation and discussion

14. Question 34· 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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    Explanation and discussion

15. Question 35· 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

16. Question 36· Computer hardware and the CPU· WAEC

    Registers are

    • Anetwork devices
    • Bsecondary storage devices
    • Cinput devices
    • Dvery small, very fast storage locations inside the CPU

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    Explanation and discussion

17. Question 37· Computer hardware and the CPU· WAEC

    Which of these is a peripheral device?

    • AALU
    • BCPU
    • Cprinter
    • Dmotherboard

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    Explanation and discussion

18. Question 38· Computer hardware and the CPU· JAMB

    The most powerful class of computers, used for weather forecasting, is

    • Asupercomputers
    • Bmicrocomputers
    • Cminicomputers
    • Dlaptops

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19. Question 39· Computer hardware and the CPU· WAEC

    The main circuit board to which other components connect is the

    • Akeyboard
    • Bhard disk
    • Cmonitor
    • Dmotherboard

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    Explanation and discussion

20. Question 40· Computer hardware and the CPU· JAMB

    The main circuit board to which the CPU and memory are attached is the

    • Apower supply
    • Bhard disk
    • Cmonitor
    • Dmotherboard

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    Explanation and discussion