問39
頻出度★★★
システム開発のプロジェクトマネジメントにおける WBS の説明として，最も適切なものはどれか。
令和8年度 ITパスポート試験 問39
マネジメント系プロジェクトマネジメント › プロジェクトマネジメント
This question's explanation and your answers so far.
解説
問 39
Incorrectア
Describing the activities on the critical path is the result of schedule analysis using an arrow diagram (PERT chart) or the critical path method. A WBS breaks work down hierarchically; it does not extract only the activities on the longest path.
Incorrectイ
Describing the scheduled start dates and scheduled completion dates of the major deliverables is a description of a milestone list or a schedule table (such as a Gantt chart). Schedule and date information is not the WBS itself.
- ウ
正解 A WBS (Work Breakdown Structure) organizes all the deliverables to be produced in a project, together with the work needed to create them, by breaking them down hierarchically from large units into small, manageable units (work packages). This prevents omissions and overlaps in the work and provides the foundation for effort estimation, scheduling, and progress management. Choice ウ, “the work required to create all deliverables, broken down hierarchically”, is exactly the definition of a WBS, so it is the most appropriate.
Incorrectエ
Describing the tools used in the project is unrelated to a WBS. A WBS is a hierarchical decomposition of the work for creating deliverables, not a list of the tools used.
ここがポイント
- A WBS is a method of organizing all the deliverables and required work of a project by breaking them down hierarchically into manageable units (work packages); it forms the basis of scope management, estimation, and progress management.
- Distinguish that a WBS is a “decomposition of the work”, which differs in purpose from the critical path or scheduling (arrow diagrams, Gantt charts, milestones).
用語