Please, i need Unique answer, Use your own words (don't copy and paste).

*Please, don't use handwriting.

Q1:

Suppose a system is developed in Year 0 (the current year) costing $100,000. Once the system is operational, benets and ongoing costs are projected over a period of three years according to the table shown below:

	Year 0	Year 1	Year 2	Year 3	Total
Total Benefits		45,000	50,000	57,000	?
Total Costs	100,000	10,000	12,000	16,000	?

1. Calculate the total benefits over the duration of three years.
2. Calculate the total costs over the duration of three years.
3. Calculate the return on investment.

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Q2

Below are some of the factors which can result in the failure of software development projects. Briefly discuss each of the factor and suggest ways to overcome these. Moreover, which of the two factors do you think are more critical and why? Justify your reason.

1. Over time or budget
2. Feature creep
3. Inaccurate estimation of the labor involved
4. Lack of financial support
5. Lack of technical knowledge and expertise
6. Inadequate knowledge of the target market

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Q3

Suppose you as project manager are using the Waterfall development methodology on a large and complex project. Your manager has just read the latest article in Computerworld that advocates replacing the Waterfall methodology with Prototyping and comes to your office requesting you to switch. What will be your opinion about it?

Under what circumstances would you opt for the Prototyping model and what would be the limitations of opting it? Discuss the difference between the two methodologies, and what are the advantages and disadvantages (or limitation) of each?