B is the best approach to resolve the problem of not being able to decompose the system testing work package yet. The system development work package should be decomposed now, while the system testing work package can be decomposed later when more details about the 50% completed system are available, using an iterative planning technique called rolling wave planning. Rolling wave planning involves planning work to be done soon in detail while planning future work at a higher level, since all details may not be known far in advance.

1. PMP EXAM
SAMPLE Q & A

2. You are facing problems decomposing the testing work package into the final activities required to complete the
work package. Detailed testing plans and activities cannot be determined until the system is at least 50% developed
and more details become available. The system development work package will take at least three months to
complete.
What is the best way to resolve this problem?
A. Use product analysis techniques such as product breakdown and systems analysis to decompose the system
testing work package
B. Decompose the system development work package now and decompose the system testing work package later
C. Break down the project into multiple phases so that the system testing work package goes into the second project
phase
D. Consult the project management plan to determine what to do in this situation
HINT: Which of the available choices describes rolling wave planning?
Question

3. The correct answer is B
Delaying the decomposition of the system testing work package until later in the project is an
example of rolling wave planning. Rolling wave planning is an iterative planning technique in
which the work to be accomplished in the near term is planned in detail, while they work in the
future is planned at a higher level. Decomposition may not be possible for a deliverable or
subcomponent that will be accomplished far into the future. The project management team
usually waits until the deliverable or subcomponent is agreed on, so the details of the work
breakdown structure (WBS) can be developed. Therefore, the best approach is to use rolling wave
planning and decompose the system development work package now, and then decompose the
system testing work package later, when more project information becomes available.
Answer

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