Which SDLC model is known for its iterative and incremental approach?*

The Software Development Life Cycle (SDLC) model known for its iterative and incremental approach is the Agile model.

Here are the steps to understand why:

1. The Agile model is based on iterative and incremental development, where requirements and solutions evolve through the collaborative effort of self-organizing and cross-functional teams.

2. In the Agile model, development and testing activities are concurrent, unlike the Waterfall model. This enhances the communication and understanding among team members.

3. Each iteration in the Agile model is considered to be a complete software project which includes tasks such as requirements analysis, design, coding, testing, and documentation.

4. After each iteration, the developed module of the software is delivered to the client. This ensures that the client is continuously involved in the development process, providing feedback and suggestions.

5. The Agile model allows for changes to be made after the initial planning. Re-work is expected in this model as the understanding of the project's goals is refined with each iteration.

6. The Agile model is best suited for projects where the requirements are expected to change frequently and there is a need for frequent communication with the end user.