WAEC Computer Studies questions

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

1. Question 241· Number systems and data representation· WAEC

   What is 64 (base ten) in octal?

   • A64₈
   • B80₈
   • C100₈
   • D77₈

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2. Question 242· Number systems and data representation· WAEC

   Convert 3C (base 16) to base 10.

   • A60
   • B312
   • C48
   • D39

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3. Question 243· Number systems and data representation· WAEC

   Convert 13 (base 10) to binary.

   • A1011
   • B1101
   • C1110
   • D1001

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4. Question 244· Number systems and data representation· WAEC

   Data becomes information when it is

   • Astored on a disk
   • Bprocessed into a meaningful form
   • Ctyped in
   • Dswitched off

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5. Question 245· Number systems and data representation· WAEC

   The binary number system uses the digits

   • A0 and 1
   • B0 to 9
   • C0 to 7
   • D0 to F

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6. Question 246· Number systems and data representation· WAEC

   ASCII is a code for representing

   • Aimages only
   • Bcharacters as numbers
   • Csound
   • Dvideo

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7. Question 247· Number systems and data representation· WAEC

   The largest unsigned number that 8 bits can hold is

   • A8
   • B256
   • C127
   • D255

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8. Question 248· Programming languages and BASIC· WAEC

   A programmer translates her whole C++ program once and then runs the machine code many times. She used

   • Aan assembler
   • Ban interpreter
   • Ca compiler
   • Da debugger

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9. Question 249· Programming languages and BASIC· WAEC

   A program that runs but gives wrong results has a

   • Asyntax error
   • Blogic error
   • Ccompilation error
   • Dtyping speed problem

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10. Question 250· Programming languages and BASIC· WAEC

    Which of these is a high-level language?

    • Aassembly language
    • Bmachine code
    • CPython
    • Dbinary

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11. Question 251· Programming languages and BASIC· WAEC

    An advantage of high-level languages over machine language is that they are

    • Aeasier to learn and understand
    • Bexecuted directly without translation
    • Cwritten only in 0s and 1s
    • Dfaster to run in every case

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12. Question 252· Programming languages and BASIC· WAEC

    Which language can a computer's processor execute directly without translation?

    • APython
    • Bmachine language
    • CBASIC
    • Dassembly language

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13. Question 253· Programming languages and BASIC· WAEC

    An assembler converts

    • Aassembly language into machine code
    • Bhigh-level language into English
    • Cmachine code into pictures
    • Ddata into information

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14. Question 254· Programming languages and BASIC· WAEC

    A translator that translates and executes a program line by line is an

    • Ainterpreter
    • Bcompiler
    • Cassembler
    • Deditor

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15. Question 255· Programming languages and BASIC· WAEC

    A disadvantage of machine language is that it is

    • Aportable to all computers
    • Btranslated by a compiler
    • Cclose to English
    • Ddifficult to write and machine-dependent

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16. Question 256· Programming languages and BASIC· WAEC

    A variable in programming is

    • Aa loop
    • Ba fixed number
    • Ca printer
    • Da named storage location whose value can change

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17. Question 257· Programming languages and BASIC· WAEC

    Assembly language uses short codes such as ADD and MOV called

    • Akeywords of BASIC
    • Bmnemonics
    • Cpixels
    • Dprotocols

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18. Question 258· Programming languages and BASIC· WAEC

    A syntax error occurs when

    • Athe computer is off
    • Bthe program gives wrong results
    • Cthe rules of the language are broken
    • Dthe printer jams

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19. Question 259· Programming languages and BASIC· WAEC

    In BASIC, the statement PRINT is used to

    • Arepeat steps
    • Baccept input
    • Cend the program
    • Ddisplay output

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20. Question 260· Programming languages and BASIC· WAEC

    HTML is used to

    • Acompile programs
    • Bstructure web pages
    • Cmanage databases
    • Ddesign hardware

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    Explanation and discussion