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Computer Science · Oct / Nov 2021 · Paper 12 · Question 9

0478

As printed in the paper

The question as text

Padma opens an application on her computer. An interrupt is generated to inform the Central Processing Unit (CPU) that the application has been opened.

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

Show the answer and mark scheme

  • 9(a)[3]

    Any three from: e.g.

    A suitable description of any error that might occur
    A peripheral is connected/disconnected
    A key on a keyboard is pressed
    A mouse button click
    A phone/video call is received
    A buffer requires more data
    A printer has a paper jam
    A printer runs out of paper
    A printer runs out of ink
    When switching from one application to another

    NOTE: If three suitable different errors are described, this can be awarded three marks.

  • 9(b)[1]

    Any one from:

    The computer would only start a new task when it had finished processing the current task // by example
    Computer will not be able to multitask
    Errors may not be dealt with
    Computer would become impossible to use
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