問54
頻出度★★★
WBS を作成するときに, 作業の記述や完了基準などを記述した補助文書を作成する。この文書の目的として, 適切なものはどれか。
令和3年度 ITパスポート試験 問54
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This question's explanation and your answers so far.
解説
問 54
Incorrectア
Clearly defining the meaning of data is the role of a Data Dictionary, whereas what the WBS Dictionary defines is work, not data. The target has been swapped, so this is wrong.
Incorrectイ
Managing the progress of work is the role of progress management (such as Gantt charts or EVM); the WBS Dictionary, a supplementary document, is a document that defines the work content, and its purpose is not to track progress itself.
Incorrectウ
Determining the critical path is an analysis of arrow diagrams (PERT) or network diagrams during schedule creation, derived from the dependencies and durations of the work. This has nothing to do with the purpose of the WBS Dictionary, which records the content and completion criteria of the work.
- エ
正解 The supplementary document that records the work descriptions and completion criteria in the question refers to the WBS Dictionary. A WBS is a list that breaks work down hierarchically, but the names of the individual elements alone tend to leave their content ambiguous. The WBS Dictionary therefore records the work content, deliverables, completion criteria, and so on for each work package, clearly defining what each piece of work means and how far it must be carried out to count as complete. Choice エ states exactly this, namely to clearly define the content and meaning of the work defined in the WBS, which matches the purpose of the WBS Dictionary, so it is correct.
ここがポイント
- The WBS Dictionary is a supplementary document that records the work content, deliverables, completion criteria, and so on for each work package in the WBS, clarifying the meaning of the work.
- Do not confuse the WBS Dictionary, which defines work, with the Data Dictionary, which defines data, nor with progress management or critical-path calculation.
用語