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__________ is a process model that removes defects before they can precipitate serious hazards.

  • A.Incremental model
  • B.Spiral model
  • C.Cleanroom software engineering
  • D.Agile model

Answer: C

Cleanroom software engineering is the process model that removes defects before they can precipitate serious hazards. It aims to prevent defects by formal specification, correctness verification and statistical testing, instead of finding them by debugging afterwards.

The incremental model delivers the product in parts, the spiral model drives development by the analysis of risk, and the agile model works in short iterations with the customer. None of them is built around defect prevention, so the answer is (C).

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