問32
頻出度★★☆
コンカレントエンジニアリングを適用した後の業務の流れを表した図として, 最も適したものはどれか。ここで, 図の中の矢印は業務の流れを示し, その上に各作業名を記述する。
令和4年度 ITパスポート試験 問32
This question's explanation and your answers so far.
解説
問 32
Incorrectア
The four tasks are lined up in a single row on one arrow, and the next task begins only after the previous one ends — a fully sequential (serial) flow. There is no overlap between the processes; this is the traditional flow before concurrent engineering is applied, not the state after it has been applied.
Incorrectイ
It is basically sequential, with only a return loop where the arrow folds back downward between the process drawing and production tasks. This merely represents rework or feedback, not the parallelization of overlapping multiple tasks so they run at the same time. As a whole it remains a sequential flow, so it is inappropriate.
Incorrectウ
On top of arranging the four tasks in series, there is an arrow that loops far back from the end (production) to the start (specification), making the whole process repeat as a cycle. This represents iteration or a cycle (a PDCA-style repetition), which differs from concurrent engineering that overlaps tasks in parallel.
- エ
正解 Concurrent engineering (parallel processes) advances the multiple tasks from design through manufacturing in parallel by overlapping parts of them, instead of waiting for the previous task to finish, thereby shortening the overall development lead time. Figure エ draws the four tasks “specification → production drawing → process drawing → production” staggered in a stepped layout, with each following task starting partway through the previous one, meaning the tasks overlap and proceed at the same time. This overlapping of processes is the very essence of concurrent engineering, so エ is the most suitable figure.
ここがポイント
- Concurrent engineering is a method that advances multiple design and manufacturing processes in parallel by overlapping them rather than running them in series, thereby shortening the development lead time.
- How to tell the figures apart: task arrows staggered in steps and overlapping = parallel; joined into a single line = sequential; looping back from the end to the start = a repetition loop.
用語