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Chapter 6 Review Questions

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Miguel Berrios July 28, 2013
Chapter 6 Review Questions

1. How does the WBS differ from the project network?
The WBS differs from the project network in several ways. The WBS is hierarchical while the project network is sequential. The work packages of the WBS are identified independently of other work packages, have definite start and finish points, require specific resources, include technical specifications and have cost estimates. Networks provide the project schedule by identifying dependencies, sequencing, and timing of activities.

2. How are WBS and project networks linked? Project networks are developed from the WBS. Work packages from the WBS are used to build the activities found in the project network. The network uses the time estimates from the WBS to generate dates for the project. Integration of the WBS and project network is crucial to effective project management. 3. Why bother creating a WBS? Why not go straight to a project network and forget the WBS? Project networks depend on the WBS because work packages from the WBS are used to develop the project network. A network activity can include one or more work packages but all activity time estimates are derived from the task times in the work package. Unlike the project network, the WBS defines all the elements of the project in a hierarchical framework and establishes their relationships to project deliverables.

4. Why is slack important to the project manager?
Slack is important to the project manager because it tells him or her which activities can be delayed and for how long without delaying the project. There are two types of slack: I. Total slack is the difference between the Late Start and Early Start and equates to the amount of time an activity can be delayed without delaying the entire project. II. Free slack is the difference

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