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Q. Explain about non-functional requirement for a software ?
Ans) Nonfunctional requirements are the basic characteristics of the system which will not be expressed as functions - such as portability of the system, maintainability of the system, usability of the system, etc.
Nonfunctional requirements can include:
# performance issues,
# reliability issues,
# interface with other external systems,
# human - computer interface issues,
# security and maintainability of the system, etc.
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What is Failure-directed Testing Ans) Testing based on the information of the types of errors made in the earlier period that are likely for the system under test.
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