IPA IP 2022 Question 36

A question IPA Japan published in 令和4年度 ITパスポート試験公開問題問36, translated into English. ITPEC is based on the same exams.

Same question on ITPEC: Apr 2026 Q56 +1 more

Which of the following is the appropriate description concerning WBS created in a project?

a)A WBS defines the details of activities to be implemented in a project and the deliverables, and can therefore be used as a basis for estimating the number of person-days.b)Activities outside the scope of the project are also examined and included in the WBS.c)The WBS breaks down the deliverables and the details of activities up to the same hierarchy in all projects.d)When a project member performs similar activities within the scope, the activities need not be described in the WBS.

Explanation

A WBS defines the activities and deliverables, so it is the basis for estimating person-days — every work package in it can be estimated, assigned and scheduled.

A WBS (Work Breakdown Structure) breaks the project's deliverables and work down hierarchically until each lowest element, a work package, is small enough to estimate and manage. The person-days of the project are then built up from the work packages, and the schedule and responsibilities are laid out on the same elements.

Answer (a)

Why not others:

•(b) — the WBS covers exactly the project scope; work outside the scope must be left out, or it would be estimated and done without being part of the project
•(c) — each project, and each branch within one, is broken down only as deep as it needs to be managed; there is no fixed number of levels
•(d) — all in-scope work must appear in the WBS (the 100% rule), even work similar to other activities; anything left out is neither estimated nor tracked

Key rule: The WBS holds 100% of the scope and nothing outside it, and its work packages are the units for estimating, scheduling and assigning work.

Project Management · AI-written, may contain errors

Previous Next

Practice this exam

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.