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Validation & Reliability — question 3 of 10

Write a real answer. It is graded against the question's rubric, and the mastery movement is computed by the same engine the product uses. Scoring here is deterministic rather than model-written, so this page costs nothing to run and nothing is saved. In a track built from your own posting, the same rubric is graded by the model, which is what produces feedback about your reasoning rather than about coverage.

You could put a board in an oven at 85C for 24 hours (a soak) or you could cycle it repeatedly between -40C and 85C over the same total time. Both stress the board thermally, but they're meant to catch different failures. What does cycling expose that a soak does not, and why?

How sure are you?

Being confidently wrong costs more mastery than admitting a guess — that is deliberate, and it is how misconceptions get found.

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