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JAMB Computer Studies questions

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

AllJAMBWAEC
All topicsAlgorithms and flowcharts · 18Application packages · 21Computer hardware and the CPU · 20Computer networks and the internet · 22Computer security, ethics and safety · 18Data processing and information · 18Evolution of computing · 19Input and output devices · 18Logic gates and Boolean algebra · 18Memory and storage devices · 21Number systems and data representation · 23Programming languages and BASIC · 21Software and operating systems · 20

  1. Question 181· Memory and storage devices· JAMB

    On a magnetic disk, each circular track is divided into

    Explanation and discussion

  2. Question 182· Memory and storage devices· JAMB

    EEPROM is erased

    Explanation and discussion

  3. Question 183· Memory and storage devices· JAMB

    Virtual memory uses part of the

    Explanation and discussion

  4. Question 184· Memory and storage devices· JAMB

    Data on magnetic tape is accessed

    Explanation and discussion

  5. Question 185· Memory and storage devices· JAMB

    An EPROM chip can be

    Explanation and discussion

  6. Question 186· Memory and storage devices· JAMB

    PROM can be

    Explanation and discussion

  7. Question 187· Memory and storage devices· JAMB

    Primary memory includes

    Explanation and discussion

  8. Question 188· Memory and storage devices· JAMB

    1 megabyte is equal to

    Explanation and discussion

  9. Question 189· Memory and storage devices· JAMB

    A magnetic tape is accessed

    Explanation and discussion

  10. Question 190· Memory and storage devices· JAMB

    Which storage device has no moving parts?

    Explanation and discussion

  11. Question 191· Memory and storage devices· JAMB

    Which of these is a secondary storage device?

    Explanation and discussion

  12. Question 192· Memory and storage devices· JAMB

    Which of these memories is the fastest?

    Explanation and discussion

  13. Question 193· Memory and storage devices· JAMB

    One kilobyte is equal to

    Explanation and discussion

  14. Question 194· Number systems and data representation· JAMB

    The binary equivalent of the decimal number 13 is

    Explanation and discussion

  15. Question 195· Number systems and data representation· JAMB

    Find the 4-bit two's complement of 0101.

    Explanation and discussion

  16. Question 196· Number systems and data representation· JAMB

    Convert 1010 1010₂ to hexadecimal.

    Explanation and discussion

  17. Question 197· Number systems and data representation· JAMB

    Convert 37₁₀ to binary.

    Explanation and discussion

  18. Question 198· Number systems and data representation· JAMB

    ASCII is a code used to represent

    Explanation and discussion

  19. Question 199· Number systems and data representation· JAMB

    The two's complement of 0011 (4 bits) is

    Explanation and discussion

  20. Question 200· Number systems and data representation· JAMB

    Add 47₈ and 25₈, giving the answer in octal.

    Explanation and discussion

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