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Computer Science · May / June 2024 · Paper 11 · Question 4

0478

As printed in the paper

The question as text

Data packets are transmitted across a network from one computer to another computer.

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

Show the answer and mark scheme

  • 4(a)[3]

    Any three from:

    A packet is split into three different sections
    … the header
    … the payload
    … the trailer

  • 4(b)[1]

    Router

  • 4(c)[3]

    Any three from:

    The network may be spread over a long distance …
    … so it is more reliable
    Bits will be sent/arrive in sequence
    …so bits less likely to be skewed
    Less crosstalk/interference
    … so less likely to have errors
    The data may not need to be transmitted at a fast speed // data transmission speed of serial is adequate
    The cables in the network only use serial transmission
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