Answer the following questions:-(Software engineering questions on SDLC models)

i)Example of an software development project for which the iterative waterfall model is not suitable.Justify

ii)Both the prototyping model as well as the spiral model have been designed to handle risks.Identify how exactly risk is handled in each?How do these 2 models can be compared with respect to their risk handling capabilities?

iii)Example of an software development project for which the spiral model is suitable.Is the numbe rof loops of the spiral fixed for different development projects?If not explain how the number of loops in the spiral is determined.