問36
頻出度★★★
プロジェクト管理においてマイルストーンに分類されるものはどれか。
平成21年度 春期 ITパスポート試験 問36
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 36
Incorrectア
The integration testing phase is a phase that has a duration from its start to its finish, not a single point in time. What can be treated as a milestone is a date such as the start date or the completion date of this phase; the phase itself is a block of work that is drawn as a bar with width on a Gantt chart.
Incorrectイ
Coding work is one of the activities broken down in the WBS (Work Breakdown Structure); it is assigned a person in charge, an amount of effort, and a duration, so it is actual work. A milestone is not work but a point in time that marks a break between pieces of work, so it falls into a different category.
- ウ
正解 The correct answer is ウ. A milestone is a key point in time that is set up in order to manage the progress of a project. It is expressed as a specific date such as the design completion date, the review start date, or the shipment approval date, and it has no duration of its own (it is a zero-duration point). Choice ウ, the start date of the design review, is exactly such a checkpoint that can be given as a date, and whether the project reaches it on that day tells you whether progress is behind schedule. Once milestones are placed, everyone can share what should be finished by each of those points even in the middle of a long phase, so delays are detected early and can be dealt with.
Incorrectエ
Maintenance work also has a duration, and it is moreover an activity of the operations phase that continues after the system goes into production. It is not a point in time that marks a project checkpoint, so it does not count as a milestone.
ここがポイント
- A milestone is a point in time, not a period. It refers to a checkpoint that can be expressed as a date, such as the design completion date, the review start date, or the shipment approval date, and it is set as a zero-duration control point so that schedule delays are detected early.
- The trick is to tell whether a choice is an activity or a point in time. Work items listed in the WBS and phases drawn with width on a Gantt chart belong to the activity side, while things that can be shown as a single point, such as their start dates and completion dates, belong to the milestone side.
用語