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Computer Science · Oct / Nov 2022 · Paper 11 · Question 3

0478

As printed in the paper

The question as text

Error codes for a computer are often displayed as hexadecimal values. Each error code is stored in a 12-bit binary register.

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

Show the answer and mark scheme

  • 3(a)[2]

    One mark for two correct characters, two marks for three, in the correct place

    0100 0000 0100

  • 3(b)[2]

    One mark for two correct characters, two marks for three

    0001 0010 1011

  • 3(c)[2]

    One mark for each correct denary conversion

    34
    172

  • 3(d)[2]

    One mark for two correct characters, two marks for three, in the correct place

    9E0

  • 3(e)[2]

    Any two from:

    It is easier for user to read/recognise/understand
    It takes up less space on a display
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