Answer Posted / sagar

in v model both V&V takes place and can roll back any time
and it is used usually for bigger projects were as in
waterfall model you can not roll back i.e when ur in one
phase you should complete i.e, requirement
study,designing,codeing,testing then go for next step r if
any changes thr can be made and procedure is followed for
the change requirement request there coms the configuration
mgt,since the designing starts once the Doc is base lined
i.e after doc is being freezed

correct if m wrong

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