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Software Testing Fundamentals and Tools
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A failure is:
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A
Departure from specified behaviour.
💡 Explanation:
A failure is a departure from specified behavior - the system doesn't do what it's supposed to do. An error is a human mistake that introduces a defect. A defect/bug is the incorrect code or data definition resulting from an error. When that defect executes, it may cause a failure (observable incorrect behavior). Option B precisely captures this definition of failure as behavioral deviation from specifications.