IPA IP 2025 Question 41
A question IPA Japan published in 令和7年度 ITパスポート試験 公開問題 問41, translated into English. ITPEC is based on the same exams.
Among the techniques used in a system development project, which of the following lists all and only the appropriate techniques used for creating a schedule?
Explanation
Critical path method and precedence diagramming method — of the four, only these two are used to build and analyse a project schedule.
- •Precedence diagramming method (PDM) draws the activities as boxes joined by arrows that show their dependencies (finish-to-start and the other three types, with leads and lags), giving the network the schedule is built on.
- •Critical path method (CPM) works through that network: it adds up durations along every path, finds the earliest and latest start of each activity and its float, and marks the longest path, the critical path, which sets the shortest possible project duration.
Both are standard tools of schedule management.
Answer (d)
Why not others:
- •(a) and (b) — include A: a DFD models how data flows between processes and data stores, a requirements analysis and design technique, not a schedule technique
- •(a) and (c) — include B: regression analysis is a statistical technique that fits a relationship between variables, used for forecasting or estimation, not for ordering activities in time
Key rule: Schedule techniques work on the network of activities and their dependencies (PDM, arrow diagrams, CPM, Gantt charts); DFDs model data, regression models statistics.
Project Management · AI-written, may contain errors
This question comes from the past questions IPA Japan publishes, translated into English by ITPEC Practice. ITPEC Practice is an independent study tool and is not affiliated with IPA or ITPEC. See the original paper (PDF) or Report an issue.