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Computer Science · Oct / Nov 2025 · Paper 12 · Question 7

0478

As printed in the paper

The question as text

A house has a smart speaker that can take voice commands as input. A person in the house can tell the smart speaker to play music or audio books.

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

Show the answer and mark scheme

  • 7(a)[3]

    It does not have a mechanical structure
    It does not have any actuators
    … so it cannot move itself

  • 7(b)[1]

    Microphone

  • 7(c)[4]

    Any four from:

    For example:

    Gather data from the same/different voices // It can ask a user to say lots of different words
    Analyse/identify patterns in a user’s voice
    It can adapt its own processes
    It can learn to identify a user’s voice
    Stores successful/unsuccessful voice commands
    It can learn different ways of making the same request
    It can learn the different pronunciations // It can learn different accents
    It can learn by listening to lots of different voices
    It can learn to ignore any background/environmental noise if a user is speaking

  • 7(d)[2]

    Any two from:

    It has a single/limited function
    It has dedicated hardware
    It has a microprocessor
    Its function is not easily changed

  • 7(e)[2]

    Any two from:

    For example:

    The music/books can be easily accessed from any smart speaker
    The user doesn’t need to purchase a secondary storage device for the books/music // Smart speaker doesn’t need a large amount of secondary storage
    The user doesn’t need to maintain the storage needed for the books/music
    Smart speaker can be smaller in size (as it doesn’t need large amounts of secondary storage)
    Almost unlimited storage available for the books/music // Easy to increase storage capacity needed

  • 7(f)(i)[2]

    Any two from:

    Data could be lost
    Data could be gained
    Data could be changed
    Skewing of data could occur
    Interference could occur
    Crosstalk could occur
    Data collisions could occur
    Data packets could time out/reach their hop count

  • 7(f)(ii)[2]

    Any two from:

    Parity byte check
    Parity block check
    Checksum
    Echo check
    ARQ
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