business management and computers

1. “Planning and budgeting processes are notorious for their rigidity and irrelevance to management action.” How can planning be made relevant to the challenges facing a business?
2. Why has prototyping become a popular way to develop business applications? What are prototyping’s advantages and disadvantages?
3. What does SDLC stand for?  What are the phases of the SDLC?  Explain in one or two sentences of your own words what happens in each phase.  If problems occur during the SDLC, is it better to identify and solve those problems near the beginning or the end of the SDLC process?
4. What is the difference between the parallel, direct (or plunge), phased, and pilot forms of IS conversion? Which conversion strategy is best? Explain why?

Only looking for a total of around 270 words.