Which model emphasizes completing the entire system in a single final delivery after a linear sequence of stages?

Which model emphasizes completing the entire system in a single final delivery after a linear sequence of stages?

• A. Waterfall Model
• B. Vee model
• C. Incremental Commitment Spiral Model
• D. Evolutionary Approach

Answer: (A)

A linear, step-by-step flow culminating in a single final release is the hallmark of the Waterfall model. In this approach, you complete one phase after another—requirements, design, implementation, integration, verification—before moving to the next, and you don’t typically revisit earlier phases. The project ends with one final system delivery after all stages are finished. The Vee model follows a similar linear sequence but ties each development activity to a corresponding testing activity, so verification and validation are integrated throughout the life cycle rather than waiting for a final delivery. The Incremental Commitment Spiral Model and the Evolutionary Approach are iterative, delivering in increments and refining through cycles, which means multiple releases rather than one final delivery.

A linear, step-by-step flow culminating in a single final release is the hallmark of the Waterfall model. In this approach, you complete one phase after another—requirements, design, implementation, integration, verification—before moving to the next, and you don’t typically revisit earlier phases. The project ends with one final system delivery after all stages are finished. The Vee model follows a similar linear sequence but ties each development activity to a corresponding testing activity, so verification and validation are integrated throughout the life cycle rather than waiting for a final delivery. The Incremental Commitment Spiral Model and the Evolutionary Approach are iterative, delivering in increments and refining through cycles, which means multiple releases rather than one final delivery.