28. OCR A Level (H046-H446) SLR6 – 1.2 Development methodologies

What is a key characteristic of the Waterfall model?

• Continuous client feedback

• Risk management at its core

• Iterative development

• Simplicity and ease of management

Answer explanation

The key characteristic of the Waterfall model is simplicity and ease of management, as it follows a linear and sequential approach without iterations or continuous client feedback.

Why might the Waterfall model not be suitable for complex projects?

• Because it requires continuous client feedback

• Because it focuses too much on risk management

• Because it doesn't handle changes in requirements well

• Due to its iterative nature

Answer explanation

The Waterfall model is not suitable for complex projects because it doesn't handle changes in requirements well, leading to potential issues and delays.

What is an advantage of Rapid Application Development?

• Excellent usability of the solution

• High efficiency of the code

• Suits large-scale projects well

• Ease of management

Answer explanation

The advantage of Rapid Application Development is the excellent usability of the solution, making it user-friendly and efficient.

What is a drawback of Rapid Application Development?

• Requires the project to be well understood from the start

• Focuses too much on risk management

• Scales poorly for very large projects

• Requires a full formal requirements document upfront

Answer explanation

Rapid Application Development scales poorly for very large projects due to its iterative and quick development approach.

What is at the heart of the Spiral model?

• Simplicity and ease of management

• Risk management

• Efficiency of the code

• Continuous client feedback

Answer explanation

The heart of the Spiral model is risk management, as it focuses on identifying and mitigating risks throughout the development process.

What is a downside of the Spiral model?

• It requires continuous client feedback

• It is only suitable for small projects

• Risk analysis is a specialized and expensive skill

• It focuses too much on the efficiency of the code

Answer explanation

The downside of the Spiral model is that risk analysis is a specialized and expensive skill, making it a potential limitation for project teams.

What do Agile and Extreme Programming emphasize?

• Formal requirements documentation

• Risk management

• Simplicity and ease of management

• Programming and code quality

Answer explanation

Agile and Extreme Programming emphasize programming and code quality, focusing on iterative development and continuous improvement of software products.

What is required from the client in Agile and Extreme Programming methodologies?

• To have a working representative embedded into the development team

• To provide a full formal requirements document upfront

• To perform risk analysis

• To manage the project

Answer explanation

In Agile and Extreme Programming methodologies, having a working representative embedded into the development team is required to ensure effective communication and collaboration.

What could be a cost implication in Extreme Programming?

• Risk analysis

• Paired programming

• Creating a full formal requirements document

• Managing a large-scale project

Answer explanation

Paired programming in Extreme Programming can lead to increased costs due to the need for two developers to work together on the same task, potentially reducing overall productivity.

Why might the Waterfall model still be considered for exam questions?

• Because of its iterative development process

• Due to its focus on risk management

• Due to its emphasis on continuous client feedback

• Because of its simplicity and ease of management

Answer explanation

The Waterfall model is still considered for exam questions due to its simplicity and ease of management, making it a fundamental concept to understand in software development.