ITPEC FE Morning April 2022 Question 52
Which of the following is an appropriate tool that implements a deliverable-oriented decomposition of a project into smaller components?
Explanation
Work breakdown structure (WBS) — it divides the project's deliverables hierarchically into smaller components, down to work packages.
The top level is the whole project; each lower level splits a deliverable into smaller ones until the lowest level, the work package, is small enough to estimate its cost and duration and assign it an owner. Because it is organised by deliverable, the WBS defines the scope, what must be produced, before any scheduling.
Answer (d)
Why not others:
- •(a) CPM — finds the critical path, the longest chain of dependent activities, which sets the project's duration
- •(b) Gantt chart — shows activities as bars on a time axis to plan and track the schedule
- •(c) PERT — represents activity dependencies as a network and estimates durations from three-point estimates
Key rule: The WBS answers what must be produced; CPM, PERT and Gantt charts take its work packages and answer when.
Project Management · AI-written, may contain errors
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