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Which network characteristic matters most for safety critical messages?

  • A.Predictable worst case delivery time, so a brake or steering message always arrives within its deadline
  • B.Deterministic timing and guaranteed latency
  • C.Maximum bandwidth, which ensures that every message may be transmitted whenever the sending node requires it
  • D.Low cost

Answer: B

A brake command must arrive within a known time, which is why priority based arbitration matters. The last option explains exactly what determinism means in practice, which makes it a correct and more concrete statement. Tracing the requirement back to the physical constraint that produces it makes the answer follow. The order in which the effects act is what decides the outcome, so it is worth establishing first. Reading the definition literally, rather than recalling a formula, is the reliable route through questions of this shape.

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