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Determinism in an avionics bus means that

  • A.Every message is acknowledged
  • B.The worst case delivery time is bounded
  • C.Messages always arrive in the order sent
  • D.The bus never fails

Answer: B

A flight control law needs to know its data will arrive within a stated time, not merely that it will arrive eventually. Ordinary office networking makes no such guarantee, which is exactly what the aviation adaptations add.

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