IPA IP 2022 Question 38

Topic: Software Development Management Techniques

A question IPA Japan published in 令和4年度 ITパスポート試験公開問題問38, translated into English. ITPEC is based on the same exams.

Which of the following is the most appropriate description of XP (Extreme Programming)?

a)It is a development technique in which a test program is created first, and code is written so that it passes the test.b)It is a method in which two programmers develop one program jointly while facing one computer.c)It is improving the internal structure of a program without changing the behavior of the program.d)It is one of the approaches of agile development that releases high-quality software responding to changes in requirements in short cycles.

Explanation

An agile approach that releases high-quality software in short cycles, responding to changing requirements — that is XP (Extreme Programming).

XP is one of the agile development methods. It delivers working software in short iterations, welcomes changes to requirements, and keeps quality high through a set of practices: test-driven development, pair programming, refactoring, continuous integration and small releases. The other three options each describe one of those practices, not XP itself.

Answer (d)

Why not others:

•(a) — writing the test first and then the code that passes it is test-driven development (TDD), one practice of XP
•(b) — two programmers developing one program together at one computer is pair programming, another XP practice
•(c) — improving a program’s internal structure without changing its behavior is refactoring, also an XP practice

Key rule: XP is the agile method as a whole; TDD, pair programming and refactoring are practices it uses, each with its own name.

Software Development Management Techniques · AI-written, may contain errors

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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.