Which of the following statements is true?

Question

Options

• AA defect does not always produce a failure, while a bug always produces a failure
• BA defect may cause a failure which, when occurring, always causes an error
• CFailures can be caused by defects, but also by environmental conditions
• DBugs are defects found during component testing, while failures are defects found at higher test

• A
  3% (1)
• C
  90% (26)
• D
  7% (2)

Explanation

Failures can be caused by defects, but also by environmental conditions. A failure is an event in which the software system does not perform a required function or performs a function incorrectly, according to the expected behavior. A defect is a flaw in the software system or a deviation from the requirements or the specifications, that may cause a failure. However, not all failures are caused by defects, as some failures may be caused by environmental conditions, such as hardware malfunctions, network interruptions, power outages, incompatible configurations, etc. Environmental conditions are factors that affect the operation of the software system, but are not part of the software system itself.

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