A Level Computer Science OCR Practice Exam

What is a key characteristic of the Spiral Model?

1. It avoids the use of any documentation

2. It relies solely on rapid prototyping

3. It includes continual risk analysis and evaluation

4. It strictly follows a sequential phase approach

The correct answer is: It includes continual risk analysis and evaluation

The key characteristic of the Spiral Model is its emphasis on continual risk analysis and evaluation throughout the software development process. This model integrates iterative development with the systematic aspects of the traditional waterfall model, allowing for ongoing assessment of risks at every stage. As new iterations are developed, potential risks are identified and addressed, which helps in minimizing failures and enhancing project outcomes. This focus on risk management differentiates the Spiral Model from other approaches, as it requires constant feedback and adaptation based on evaluation of both the project's progress and its potential obstacles. By continuously revisiting and reassessing risks, the model encourages developers to make informed decisions, ensuring that they can respond to challenges dynamically as they emerge. This characteristic makes the Spiral Model highly effective for complex and large-scale projects where risks may significantly impact performance, timelines, and deliverables. It contrasts with approaches that may lack this ongoing risk assessment process, potentially leading to issues that could have been mitigated through earlier evaluation and response.