What are the advantages and disadvantages of prototyping? Describe the steps in prototyping. Give at least two circumstances under which prototyping might be useful

What will be an ideal response?

Prototyping is most useful when there is some uncertainty about requirements or design solutions. Because prototyping encourages intense end-user involvement throughout the process, it is more likely to produce systems that fulfill user requirements. Working prototype systems can be developed very rapidly and inexpensively.
Rapid prototyping can gloss over essential steps in systems development. If the completed prototype works reasonably well, management may not see the need for reprogramming, redesigned, full documentation in testing to build a polished production system. This can backfire later with large quantities of data or large numbers of users in a production environment.
The steps in prototyping are:
1. identify the user's basic requirements,
2. develop an initial prototype,
3. use the prototype,
4. revise and enhance the prototype.
Prototyping might be especially useful in designing end-user interfaces, or situations in which the users have no clear ideas of what their information requirements are.