What is difference between functional and non functional requirement

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Accepted Answer

Functional requirements describe what the system should do, while non-functional requirements describe how the system should perform.

Functional requirements focus on specific behaviors of the system, such as user interactions or data manipulation.
Non-functional requirements focus on qualities of the system, such as performance, security, or scalability.
Functional requirements are typically easier to test and verify compared to non-functional requirements.
Examples of functional requirements include user authentication, data validation, and report generation.
Examples of non-functional requirements include response time, availability, and maintainability.

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