Answer / varma

in water fall model there is a demarkation among every
module in the life cycle.the start of the next phase will
occur at the completion of the previous phase.

in the case of V-model the development and testing
processes will occur simultaniously to save the time as
well as money.

Answer / venkateswara reddy

water fall model testing is performed under low priority
activity.If any defect you can identify the risk,time and
cost of the s/w is very high.un realistic testing and
inadiquatetesting perform.

v-model testing is performed corresponding parallel testing
activity.If any defect you can identify the earlier stage
so risk,cost and time very low.The expected s/w product
deliverd.

Answer / sneha

In Waterfall model ,the ouput of each phase will become
input to the next phase...we can't go back in this
waterfall modal and this work fine where there is no
frequent change in requriment.
Where as in V- Modal testing and developing goes parllely...
while doing verification we can aslo do the validations...
we can desing the testcases for user acceptance when the
requirement analysis phase is going. we can design the
system design testcase when the system engineers analysis
the user requirements..we can design the Integration test
design when the architecture design is carried out and we
can design the unit test cases when the module design is
carried and after all these completed then coding phase
will be started...once it is done the validation phase cums
in to picture. we will execute the test cases for which we
have designed already...in each phase like first unit
testing then integration testing,system testing and user
acceptance testing.

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