令和7年度 ITパスポート試験 問41

※ Our check while writing this explanation could not fully confirm the published answer; scoring follows IPA's official key.

• ×Incorrectア

  The combination of a and b. a DFD (Data Flow Diagram) is a requirements-analysis / structured-analysis technique that shows the flow of data and processing; it is not used for creating a schedule. b Regression analysis is a method that statistically analyzes the relationships among variables (used for demand forecasting, etc.) and is not a scheduling technique. Since neither is a scheduling technique, this is incorrect.

• ×Incorrectイ

  The combination of a and d. d The Precedence Diagram Method is correct as a scheduling technique, but a DFD is an analysis technique that shows the flow of data and is not used for creating a schedule. Because it includes a, which is not a scheduling technique, this is incorrect.

• ×Incorrectウ

  The combination of b and c. c The Critical Path Method is correct as a scheduling technique, but b regression analysis is a statistical analysis method and not a scheduling technique. Because it includes b, which is not a scheduling technique, this is incorrect.

• ○エ

  正解 The techniques used for creating a schedule are c and d, so the correct answer is エ (c, d). c The Critical Path Method (CPM) finds the longest path from start to finish (the critical path) based on the duration and the order relationships of each activity, allowing you to grasp the total number of days the project needs and the slack in the schedule; it is a representative scheduling technique. d The Precedence Diagram Method (PDM) builds a network diagram with activities as nodes and dependencies as arrows, organizing the order relationships among activities to construct the schedule. Both are used for the purpose of creating a project schedule, so エ, which lists only these two, is appropriate.