Discussion
Statement I: Bandwidth allocation gaps make an avionics Ethernet network deterministic.
Statement II: They cap the rate at which any virtual link can inject traffic.
In the light of the above statements, choose the correct answer.
Answer: D
Correct answer: Both Statement I and Statement II are correct
Both are true and the second is how the first is achieved. The bandwidth allocation gap sets a minimum interval between frames on a virtual link, so the link cannot exceed one maximum-size frame per gap.
With every link's traffic bounded in advance and the switches policing those bounds, the total that can arrive at any output port is known, so the worst-case queueing delay can be computed and demonstrated. Ordinary Ethernet offers no such bound, which is why it cannot be certified for flight-critical data as it stands.
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