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This model provides the potential for rapid development of incremental versions of the software with risk analysis and customer evaluation during the cycle:

________________ can serve as “First System” and “Quick Design”.

When, a customer defines a set of general objectives for software but does not identify detailed input, processing, or output requirements we can use _____________ model.

In this model requirements are well understood before the design begins.

The _________ uses prototyping as a risk reduction mechanism but more important it enables the developer to apply the prototyping approach at any stage in the evolution of the product.

This model combines the elements of waterfall model and prototyping model in an incremental way:

In waterfall model-incorporating changes is harder, as this is difficult to backtrack.

In the Iterative model, prototype may have to be thrown away once the system is built and the requirements are well understood.

Spiral model is not useful when we embark on high-risk technology project.

Prototyping is useful when customer is clueless of what he/she wants.