Question 1 (5 points) If the likelihood that the requirements for a software development project will change after design is 0.4, and the cost to redesign to new requirements is $30,000, what is the risk exposure? Question 2 (10 points) Consider the SDLC processes introduced in class. Which ones give you the most flexibility to change in reaction to changing requirements? Explain Question 3 (10 points) Many project managers plan their schedules based on programmer productivity on past projects. This productivity is often measured in terms of unit of size per unit of time. For example, an organization may produce 300 lines of code per day or 1200 application points per month Is it appropriate to measure productivity in this way? Discuss the measurement of productivity in terms of the following issues: Different languages can produce different numbers of lines of code for implantation of the same design Productivity in lines of code cannot be measured until implementation begins Programmers my structure code to meet productivity goals Question 4 (25 points) An activity graph for a software development project is shown in Figure 1. The number corresponding to each edge of the graph indicates the number of days required to complete the activity represented by that branch. Create a Table showing the Activity. EST, and LST and Slack Find the critical path. What is the minimum time the project will take to complete? STARTA FINIS Figure1 An activity graph for a software development project Activ EST LST Slack B..C B. D C..E E..H E..F F.I D..G G..I I..J I..K K..L H..L Question 5 (10 points) develop a use-case diagram for an on-line telephone directory to replace the phonebook that is provided to you by your phone company. The directory should be able to provide phone numbers when presented with a name; it should also list area codes for different parts of the country and generate emergency telephone numbers for your area