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Q. Explain the bath tub curve of hardware reliability?
Ans: As indicated in the diagram below there are three phasing in the life of whichever hardware component that is burn-in useful life & wear out. In burn-in phase failure rate is moderately high initially and it starts decreasing gradually as the time progresses. It may be because of initial testing in the premises of the organization. During helpful life period failure rate is approximately constant. Failure rate enhance in wear-out phase due to wearing out/aging of components. The best period is helpful life period. The figure of this curve is like a bath tub and that is why it is known as bath tub curve.
Bath tub curve of hardware reliability.
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