(完整版)四川大学研究生软件项目管理课堂测试答案

1.List the problems you experienced when you carried out a recent ICT-related assignment. Try to put these problems into some order of magnitude. For each problem consider whether there was some way in which the problem could have been reduced by better organization and planning by yourself.

2.We plan to invest 5000$ for a project and wish to get 12500$ profit after five years. Suppose that there is 2500$ profit for every year and the interest rate is 12%. Please compute the NPV and DPBP for the project.

DPBP(动态回收期）= 3 years

3.An invoicing system is to have the following components: amend invoice, produce invoice, produce monthly statements, record cash payment, clear paid invoices from database, create customer records, delete customer.

(a)What physical dependencies govern the order in which these

transactions are implemented?

1. Create customer

2. Delete customer

3. Produce invoice

4. Amend invoice

5. Payment

6.Clear paid invoices

7. Produce monthly statements

(b)How could the system be broken down into increments which would be of some value to the users (hint – think about the problems of taking existing details onto a database when a system is first implemented).

increment 1: Create customer, Delete customer

increment 2: Produce invoice, Amend invoice

increment 3: Payment, Clear paid invoices

increment 4: Produce monthly statements

4.Given the project data below:

a)What items are size drivers?

inputs, outputs, entity accesses (system users for certain aspects)

b)What items are productivity drivers?

Programming language

c)What are the productivity rates for programming languages x, y and z?

x: 10 FPs/day y: 7 FPs/day z: 12 FPs/day

x:[(210x0.58+420x0.26+40x1.66)/30+(469x0.58+1406x0.26+125x1.66) /85]/2

d)What would be the estimated effort for projects X and Y using a Mark II function point count?

FP of Project X is 261.8 and FP of Project Y is 704.66. Using the productivity rate for programming language y, the estimate for Project X would be 262/7 i.e. 37 days, and for Project Y 705/7 i.e. 101 days.

e)What would be the estimated effort for X and Y using an approximate analogy approach?

Project X seems closest to Project 5 which provides an estimate of 22 days, and Project Y seems to be closest to Project 3 which gives an estimate of 108 days.

5.

Create a PERT activity network using above data. Calculate the earliest and latest start and end dates and the float associated with each activity. From this identify the critical path. Answer:

6.

Using the activity times above:

1.Calcaulate the expected duration and standard deviation for each activity

2. Identify the critical path

3. Draw up an activity diagram applying critical chain principles for this project:

•Local the places where buffers will need to be located.

•Assess the size of the buffers

•Start all activities as later as possible.