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Software Requirements Overview

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Questions and Answers

What is the primary focus of Functional Requirements (FRs) in software engineering?

The user experience and interface design

The qualities or constraints of the software system

The specific functions or behaviors the system must perform (correct)

The performance metrics of the software

Which statement correctly describes Non-Functional Requirements (NFRs)?

NFRs define the performance and usability attributes of the system. (correct)

NFRs specify what the system shall do and its functionalities.

NFRs outline specific tasks the system must accomplish.

NFRs are primarily concerned with user authentication features.

Which of the following is an example of a Functional Requirement?

The system should provide an intuitive user interface.

The system shall allow users to log in using their username and password. (correct)

The system must be compatible with all mobile devices.

The system should be fast and responsive.

How are Functional Requirements typically expressed?

Using phrases like 'The system shall...' or 'The system will...'. Signup and view all the answers

What distinguishes Non-Functional Requirements from Functional Requirements?

NFRs address the constraints and qualities of the system, while FRs address functionalities. Signup and view all the answers

How do Functional Requirements (FRs) typically define the expectations for a software system?

FRs define specific functions and behaviors that the software must perform, typically expressed as 'The system shall...'. Signup and view all the answers

What is a key difference between how Functional Requirements and Non-Functional Requirements are expressed?

Functional Requirements are expressed as 'The system shall...', while Non-Functional Requirements are expressed as 'The system should...'. Signup and view all the answers

Provide an example of a Non-Functional Requirement (NFR) and explain its significance.

An example of an NFR could be 'The system must achieve a response time of under 2 seconds.' Its significance lies in ensuring that user experience and performance standards are met. Signup and view all the answers

Why is understanding both Functional and Non-Functional Requirements important in software development?

Understanding both types ensures the software meets user needs in terms of functionality as well as performance and usability. Signup and view all the answers

Describe how user authentication can be classified and what it signifies.

User authentication is classified as a Functional Requirement as it specifies a behavior the system must perform: allowing users to log in. Signup and view all the answers

Study Notes

Functional Requirements (FRs)

FRs define what the software does.
They describe the specific functions and behaviors the system needs.
They detail features and how the system should operate.
Typically framed using phrases like "The system shall..." or "The system will...".
Examples include user authentication, data storage, and search functionality.

Non-Functional Requirements (NFRs)

NFRs describe how the software should behave.
They define qualities, performance, and usability constraints.
They specify how the system performs or is used.
Typically framed using phrases like "The system should..." or "The system must...".

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Description

This quiz covers the fundamental concepts of Functional and Non-Functional Requirements in software development. Learn how these requirements define what the system should do and how it should behave, including examples and typical phrasing used in technical specifications.