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Which of the following is a non-functional requirement ?

  • A.The software should be able to handle 1000 users simultaneously
  • B.The software should display data on the screen
  • C.The software should allow users to log in
  • D.The software should save user data

Answer: A

The non-functional requirement is The software should be able to handle 1000 users simultaneously.

Non-functional requirements describe how well the system performs, such as performance, scalability, reliability and security, rather than what it does. Handling 1000 concurrent users is a performance and scalability requirement.

Displaying data, letting users log in and saving user data are functions the system must perform, so they are functional requirements.

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