ITIL 4 Foundation Practice Exam

What describes the 'waterfall method' in service development?

1. An iterative approach with frequent revisions

2. A linear and sequential development approach with distinct objectives

3. A flexible approach for continuous delivery

4. A method focused on customer feedback

The correct answer is: A linear and sequential development approach with distinct objectives

The waterfall method in service development is a linear and sequential approach that emphasizes distinct phases of development. Each phase must be completed before moving on to the next, making it essential for objectives to be clearly defined from the start. This structure is beneficial in environments where requirements are unlikely to change during the development process, as it allows for a clear roadmap that guides the project from initiation through to the final delivery. In contrast, methodologies like the iterative approach emphasize frequent revisions and changes throughout the development cycle, which does not align with the waterfall model's rigid structure. Similarly, the concepts of flexibility and continuous delivery focus on adapting to changes and incorporating iterative feedback, which is not a characteristic of the waterfall method. Lastly, a strong emphasis on customer feedback is often a hallmark of agile methodologies, which prioritize ongoing interaction over the more stepwise, fixed approach of the waterfall method. Thus, the waterfall method's defining trait is its linearity and the sequential nature of achieving specific objectives.