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Computer Science · May / June 2023 · Paper 12 · Question 4

0478

As printed in the paper

The question as text

A student uses a mobile phone to take photographs for a school project. The student needs to transmit the photographs to their computer. They could use serial data transmission or parallel data transmission to transmit the photographs.

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

Show the answer and mark scheme

  • 4(a)(i)[2]

    Two from:

    Data is sent one bit at a time
    A single wire is used

  • 4(a)(ii)[2]

    Any two from:

    Data won’t be skewed
    Less chance of interference/crosstalk/corruption/error
    Transmission speed is adequate

  • 4(a)(iii)[1]

    The data may be transmitted quicker

  • 4(b)(i)[1]

    Router

  • 4(b)(ii)[2]

    Any two from:

    A collection of servers
    … that store data in a remote location // that allows data to be accessed remotely
    … that are (normally) accessed using an internet connection

  • 4(b)(iii)[1]

    Any one from:

    e.g.

    May be less secure // by example
    May lose access to them if internet connection lost/not available
    Reliant on a third party maintaining the hardware // by example
    Could incur an extra/ongoing fee/cost
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