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Computer Science · May / June 2023 · Paper 12 · Question 2

0478

As printed in the paper

The question as text

Binary numbers can be converted to hexadecimal.

Read automatically from the paper; the printed page above is exact.

Show the answer and mark scheme

  • 2(a)[4]

    One mark per each correct character in the correct order:

    9
    3
    0
    D

  • 2(b)(i)[1]

    00001111

  • 2(b)(ii)[1]

    Any one from:

    The value becomes incorrect/inaccurate as the right most bits are lost
    It is divided by 8

  • 2(c)[2]

    Any two from:

    Easier/quicker to understand/read/write
    Easier/quicker to debug
    Less likely to make a mistake
    Shorter representation // Takes up less screen space

  • 2(d)[2]

    One mark for two correct characters, two marks for three correct characters in the correct order:

    1
    2
    D
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