List the functional and non-functional requirements.

In software engineering, requirements play a crucial role in determining how a system will behave, what it will do, and how it will perform under various conditions. Requirements are typically divided into two broad categories: functional requirements and non-functional requirements. Let’s understand these two in detail.

Functional Requirements

Functional requirements describe what a system should do. These are specific features, services, and operations that the system must perform. They focus on the functional behavior of the system under certain conditions. These requirements essentially answer the question: "What actions should the system perform?"

Characteristics of Functional Requirements:

• They are directly related to user needs.

• They describe interactions between the system and its environment.

• They can be easily verified through testing and validation.

• They are typically expressed as “the system shall do this”.

Examples of Functional Requirements:

1. User Authentication:
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