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Definition of Functional Requirements

publish date: 2026/06/05 21:07:6.809994 UTC

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Which of the following best describes functional requirements?

Emergent system properties such as reliability, performance, and availability

Statements of services the system should provide, how it should react to particular inputs, and how it should behave in particular situations

Requirements derived from the application domain that constrain how computations must be carried out

Constraints on the development process imposed by the client organization

Correct Answer

Statements of services the system should provide, how it should react to particular inputs, and how it should behave in particular situations

Explanation

Functional requirements are statements of the services the system should provide, how it should react to particular inputs, and how the system should behave in particular situations. In some cases they may also explicitly state what the system should NOT do.

Reference

Software Engineering, Ian Sommerville, 9th edition

Quizzes you can take where this question appears

Functional and Non-Functional Requirements