Podcast
Questions and Answers
In the spiral model, what does the angular dimension represent?
In the spiral model, what does the angular dimension represent?
What is one of the advantages of the spiral model?
What is one of the advantages of the spiral model?
What is a characteristic of a prototype in the prototype model?
What is a characteristic of a prototype in the prototype model?
When is the spiral model typically used?
When is the spiral model typically used?
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What is one of the disadvantages of the spiral model?
What is one of the disadvantages of the spiral model?
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What is the purpose of building a prototype in the prototype model?
What is the purpose of building a prototype in the prototype model?
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What is a characteristic of a prototype in the prototype model?
What is a characteristic of a prototype in the prototype model?
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In which phase of the spiral model is the review and planning process?
In which phase of the spiral model is the review and planning process?
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What is the primary objective of the prototype model in software development?
What is the primary objective of the prototype model in software development?
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What is a major advantage of using the prototype model in software development?
What is a major advantage of using the prototype model in software development?
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What is a disadvantage of using the prototype model in software development?
What is a disadvantage of using the prototype model in software development?
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When is the prototype model typically used in software development?
When is the prototype model typically used in software development?
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What is the meaning of 'Agile' in the context of software development?
What is the meaning of 'Agile' in the context of software development?
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What is a characteristic of Agile process model in software development?
What is a characteristic of Agile process model in software development?
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What is a common use case for the Agile process model in software development?
What is a common use case for the Agile process model in software development?
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What is a key difference between the Agile process model and the prototype model?
What is a key difference between the Agile process model and the prototype model?
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What is the primary focus of the core product in the Incremental Model?
What is the primary focus of the core product in the Incremental Model?
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What is a characteristic of the Incremental Model that makes it more flexible?
What is a characteristic of the Incremental Model that makes it more flexible?
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What is a disadvantage of the Incremental Model?
What is a disadvantage of the Incremental Model?
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When is the Incremental Model typically used?
When is the Incremental Model typically used?
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What is the main goal of the RAD model?
What is the main goal of the RAD model?
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What is a key requirement for the RAD model to be successful?
What is a key requirement for the RAD model to be successful?
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What is a characteristic of the Incremental Model that benefits the user?
What is a characteristic of the Incremental Model that benefits the user?
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What is the purpose of feedback in the Incremental Model?
What is the purpose of feedback in the Incremental Model?
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Study Notes
Spiral Model
- It is flexible and can deal with changes easily
- It involves user involvement, which improves user satisfaction
- New ideas and functionality can be added at a later stage
- It is applicable for large problem only
- It can be more costly to use
- It is more complex to understand
- More documents are needed as more spirals are added
Spiral Model Quadrants
- 1st Quadrant: Determine Objectives
- 2nd Quadrant: Identify and resolve risks
- 3rd Quadrant: Develop next level product
- 4th Quadrant: Review and planning
Spiral Model Graph
- Radius represents cost
- Angular dimension represents progress of the current phase
Prototype Model
- A working physical system or subsystem
- A partial developed product
- Limited functional capabilities
- Low reliability
- Inefficient performance
- Useful in developing GUI part of system
- Quick design and build prototype
- Submit to customer for evaluation
- Refine requirements and modify prototype
- Repeat until customer approval
- Then, develop actual system using iterative waterfall model
Prototype Model Advantages
- Partial product is built initially, allowing customer preview
- New requirements can be accommodated easily
- Quicker user feedback for better solution
- Chance of user satisfaction is higher
Prototype Model Disadvantages
- Code is usually thrown away, wasting time
- High construction cost
- Losing customer interest if initial prototype is unsatisfactory
Prototype Model When to Use
- When system needs interactions with end-users
- Generally used in GUI type of development
Agile Model
- Based on iterative development
- Break tasks into smaller iterations
- No long-term planning
- Project scope and requirements laid down at the beginning
- System broken down into modules, implemented and delivered incrementally
- Core product developed first
- Core product used by customers to evaluate
- Initial product skeleton refined into increasing levels of capability
Incremental Model
- Each successive version performs more useful work
- Core modules get thoroughly tested, reducing error chance
- Model is flexible and less costly to change scope and requirements
- User gets to experiment with partially developed software
- Feedback at each increment helps determine better final product
Incremental Model Disadvantages
- Difficulty in subdividing problems into functional units
- Model can be used for very large problems
- Needs good planning and design
Incremental Model When to Use
- When problem is very large and user requirements are not well specified initially
RAD Model
- Proposed by IBM in 1980
- Emphasizes extremely short development cycle
- Emphasizes reuse
- User involvement essential from requirement analysis to delivery
- Requirements must be cleared and well understood initially
- Can create a fully functional system within short time periods
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Description
This quiz covers the quadrants of the spiral model, including determining objectives, identifying risks, developing next level product, and reviewing and planning. It also explores the representation of cost and progress in the spiral model.
