Answer / n@n!

V-Model:
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verification & validation (r)
un conventional & conventional (r)
quality assurence & quality control is nothing but V-Model.

verification : it is the procress of verifing that
developers r develop right product r not.
verificatio is a prevention activity.
verification can be done by reviews and walk through.

validation: it is the procress of finding bugs to make sure
that the application is work under customer expactations.
validation is a correction activity.


Agile Model:
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it is used for less formal and reduce scope.
used for time critical applications.

some agile methods:
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adaptive software development (ASD)
feature driven development (FDD)
extreme programming (XP)
rational unify procress (RUP)

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