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Questions and Answers
What is one of the costs of change in software projects?
How can change anticipation be incorporated in the software process?
What is change tolerance in the context of software development?
How does system prototyping contribute to coping with requirements’ change?
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What is the purpose of developing a prototype system in software projects?
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How can changing platforms impact software projects?
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What is the purpose of system increments being delivered to the customer for comment and experimentation?
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What is the main benefit of using a prototype in the requirements engineering process?
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Why are throw-away prototypes not a good basis for a production system?
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What is the main difference between incremental development and incremental delivery?
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What is a key advantage of incremental delivery?
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Why can it be hard to identify common facilities needed by all increments in incremental delivery?
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What is the main purpose of using prototypes in the testing process?
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Why should prototypes be discarded after development?
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What does incremental delivery support?
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What is a benefit of using prototypes in the design processes?
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Change is avoidable in all large software projects.
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New technologies can open up new possibilities for improving implementations.
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Incremental development does not support change anticipation.
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System prototyping supports change anticipation.
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Throw-away prototypes are a good basis for a production system.
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Coping with requirements’ change can be supported by system prototyping.
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Incremental delivery involves delivering the entire system all at once to the customer.
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Prototypes can be used to explore design options and develop a UI design.
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Throw-away prototypes should be retained for use in the production system.
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Incremental delivery can lead to lower risk of overall project failure.
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Incremental development involves deploying an increment for use by end-users.
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Prototypes contribute to improved system usability, but not to improved maintainability.
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Change avoidance and change tolerance are supported by incremental delivery.
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Throw-away prototypes are normally well-documented.
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Incremental delivery involves freezing the requirements once the development of an increment is started.
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Incremental delivery allows user requirements to continue evolving for later increments even after an increment is started.
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Study Notes
Costs of Change in Software Projects
- Changes can result in increased costs due to delays, rework, and potential disruptions in project timelines.
- Change anticipation is essential to manage costs associated with requirements that evolve during the development cycle.
Change Anticipation in the Software Process
- Incorporating change anticipation involves flexible planning, regular feedback loops, and adaptive methodologies to accommodate unexpected modifications.
Change Tolerance in Software Development
- Change tolerance refers to the system's ability to absorb alterations without significant disruptions to overall functionality or progress.
System Prototyping and Requirements Changes
- System prototyping allows developers to interactively refine requirements by providing a visual representation of the system, which can adapt as new insights emerge.
Purpose of Developing a Prototype System
- A prototype system serves to validate concepts, gather user feedback, and explore potential solutions early in the development process.
Impact of Changing Platforms on Software Projects
- Transitioning to new platforms can introduce compatibility issues, require additional resources, and necessitate retraining of personnel involved in the project.
Purpose of System Increments Delivery
- Delivering system increments for customer feedback facilitates real-time evaluation and adjustments based on user experience, leading to enhanced satisfaction and usability.
Benefits of Prototypes in Requirements Engineering
- Prototypes streamline the requirements gathering process by visually representing ideas, allowing for clarification and refinement of user needs.
Throwaway Prototypes Limitation
- Throwaway prototypes are not suitable as production systems because they are typically designed for quick iteration and do not adhere to long-term sustainability or maintainability requirements.
Incremental Development vs. Incremental Delivery
- Incremental development involves gradually deploying functional segments for end-user interaction, while incremental delivery refers to releasing the complete system in full increments.
Advantages of Incremental Delivery
- It reduces the risk of project failure by facilitating early user engagement and iterative improvements throughout the development cycle.
Challenges in Identifying Common Facilities in Incremental Delivery
- Difficulties arise in pinpointing shared functionalities due to the evolving nature of user requirements and varying scopes across increments.
Purpose of Prototypes in Testing
- Prototypes are used in testing phases to simulate system interactions, validate functionality, and assess user experience prior to final implementation.
Discarding Prototypes After Development
- Prototypes should be discarded once development is complete to avoid confusion, as they are often not designed for long-term use or scalability.
Support Offered by Incremental Delivery
- Incremental delivery supports adaptability to changing user requirements, allowing for ongoing feedback and modifications even after the start of development.
Benefits of Prototypes in Design Processes
- Prototypes enhance design processes by enabling exploration of multiple design options, fostering innovation, and refining user interfaces before full implementation.
Incorrect Statements Clarified
- Change is typically unavoidable in large software projects due to evolving requirements and external factors.
- Incremental development does in fact support change anticipation through its iterative nature.
- Throw-away prototypes can provide essential insights but are not the foundation for a robust production system.
- Incremental delivery allows user requirements to evolve, accommodating new demands over time.
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Description
Test your knowledge on coping with change in large software projects and the cost of rework in software prototyping. Understand how change affects system requirements, implementation possibilities, and platforms, and learn about the costs associated with rework and implementing new functionality.
