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What are some of the reasons why software fails?

Give at least 5 reasons that contribute to software failure.

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Tests can fail for a lot of reasons including:

Human Error:

  • Too much pressures to deliver - tight, unrealistic deadlines can bring about this.
  • Complexity of system under test. If its too complex to understand.
  • Faulty design. (can be error in specification doc).
  • Faulty components within the system.
  • Inexperience of technical staff. Expecially when using a relatively unknown technology.
  • Frequent changes to requirements (moving target).

Environmental reasons:

  • Radiation, pollution can affect hardware/ firmware and lead to failure.

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