Agile vs. Plan-Driven Development
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What is a key advantage of the incremental development model?

  • It eliminates the need for early planning.
  • It ensures a fixed scope for all increments.
  • It requires less documentation than waterfall development.
  • It allows for rapid delivery and deployment of software. (correct)

    • Which of the following is a challenge associated with incremental development?

  • Increased customer satisfaction during early stages.
  • Lower management overhead compared to waterfall.
  • Reduced risk of project failure.
  • Visibility of the overall process can be difficult. (correct)

    • Why may incremental development be more expensive than the waterfall model?

  • It involves fewer testing efforts.
  • It does not allow for scope changes.
  • It requires more documentation.
  • It often needs more experienced staff and specialized tools. (correct)

    • What is one of the benefits of using early increments in incremental development?

    <p>They serve as prototypes for requirement elicitation.</p> Signup and view all the answers

    In what situation is the waterfall model most effectively utilized?

    <p>In large systems engineering projects developed at multiple sites.</p> Signup and view all the answers

    What is a potential drawback of integrating existing components in software development?

    <p>It may lead to higher costs and management overhead.</p> Signup and view all the answers

    What is a significant drawback of the waterfall model?

    <p>It involves late feedback and potentially expensive changes.</p> Signup and view all the answers

    What is a common misconception about incremental development?

    <p>It is always easier and less costly.</p> Signup and view all the answers

    What typically happens to system architecture in incremental development as new increments are added?

    <p>It must be adaptive to ongoing changes.</p> Signup and view all the answers

    In which situation is the waterfall model most appropriately used?

    <p>Projects where requirements are well understood.</p> Signup and view all the answers

    Which of the following phases is NOT part of the waterfall model?

    <p>Feedback and adjustments</p> Signup and view all the answers

    What is a characteristic of the waterfall model's project partitioning?

    <p>Inflexible and distinct stages.</p> Signup and view all the answers

    What is a pro of the waterfall model?

    <p>It is easy to manage if requirements are known.</p> Signup and view all the answers

    Which type of project is least likely to benefit from the waterfall model?

    <p>Projects with rapidly changing user needs.</p> Signup and view all the answers

    How does the waterfall model treat customer feedback?

    <p>It tends to receive feedback late in the process.</p> Signup and view all the answers

    What is one of the key stages in the waterfall model?

    <p>Operation and maintenance</p> Signup and view all the answers

    What is the primary goal when establishing a high-level vision at the beginning of a project?

    <p>To understand the core purpose of the project.</p> Signup and view all the answers

    What characterizes the short-term planning approach in agile methodologies?

    <p>Only tasks and features for the upcoming sprint are planned.</p> Signup and view all the answers

    How does the continuous replanning process benefit an agile team?

    <p>It adjusts priorities based on stakeholder feedback.</p> Signup and view all the answers

    Which methodology is typically preferred for projects dealing with sensitive data like medical records?

    <p>Plan-driven, because it ensures compliance with regulations.</p> Signup and view all the answers

    What is a disadvantage of agile methodologies in certain contexts?

    <p>It can lack comprehensive documentation.</p> Signup and view all the answers

    What is a key feature of sprints in agile project management?

    <p>Sprints are time-boxed to a specific duration.</p> Signup and view all the answers

    Which of the following is true about feedback in agile project management?

    <p>Feedback leads to adjustments in upcoming sprints.</p> Signup and view all the answers

    What is the focus of plan-driven methodologies in relation to project changes?

    <p>Limits changes to avoid project delays.</p> Signup and view all the answers

    What is a commonly used term for stand-alone application systems that are configured for specific environments?

    <p>COTS</p> Signup and view all the answers

    Which stage involves searching for existing software components to fulfill requirements?

    <p>Software Discovery and Evaluation</p> Signup and view all the answers

    What is a primary advantage of adopting a reuse-oriented software engineering approach?

    <p>Reduced costs and risks</p> Signup and view all the answers

    What potential downside is associated with reuse-oriented software engineering?

    <p>Less adaptability to user needs</p> Signup and view all the answers

    In the context of software systems, which of the following best describes web services?

    <p>Applications designed for remote invocation</p> Signup and view all the answers

    What does component adaptation and integration primarily involve?

    <p>Modifying code and extending functionality</p> Signup and view all the answers

    Which process stage comes after the software discovery and evaluation?

    <p>Requirements Refinement</p> Signup and view all the answers

    What is one of the common challenges when adopting a reuse approach in software development?

    <p>Identifying suitable reusable components</p> Signup and view all the answers

    What is the primary advantage of the Waterfall model in software development?

    <p>Clear structure and well-defined stages</p> Signup and view all the answers

    What is a significant drawback of the Waterfall model?

    <p>Late feedback can lead to unsatisfactory products</p> Signup and view all the answers

    In the Agile approach, how is development structured?

    <p>In small, incremental sprints</p> Signup and view all the answers

    What can be a consequence of inflexibility in the Waterfall model?

    <p>Costly and time-consuming modifications</p> Signup and view all the answers

    What defines the maintenance phase of the Waterfall model?

    <p>Fixing bugs and addressing post-deployment issues</p> Signup and view all the answers

    Why is continuous feedback significant in the Agile model?

    <p>It helps prioritize future development based on user experience</p> Signup and view all the answers

    What is a key characteristic of incremental planning in Agile?

    <p>Starting with a basic set of features and developing in short cycles</p> Signup and view all the answers

    How does Agile methodology approach user involvement?

    <p>Users are engaged through frequent feedback after each sprint</p> Signup and view all the answers

    Study Notes

    Agile vs. Plan-Driven Development

    • Agile development prioritizes short-term planning and continuous adjustment based on feedback, while plan-driven approaches focus on detailed upfront planning.
    • Agile development utilizes sprints, short development cycles where teams focus on completing a small set of tasks.
    • Plan-driven approaches involve defined phases like requirements analysis, design, implementation, testing, and maintenance.

    Waterfall Model

    • Steps: Requirements analysis, system design, implementation, testing, integration, operation, and maintenance.
    • Example: Construction of a house.
    • Advantages:
      • Easily manageable process.
      • Effective when requirements are well-defined.
      • Extensive documentation.
    • Disadvantages:
      • Inflexible, making it hard to adapt to changing requirements.
      • Feedback comes late, making changes expensive.
    • Best for: Projects with clear requirements and limited anticipated changes, such as safety-critical systems.

    Incremental Development

    • Developers build and deliver software in small, incremental releases.
    • Advantages:
      • Enables faster delivery of working software for customer use.
      • Allows for prototypes and continuous feedback, leading to a product better aligned with user needs.
      • Lower risk of overall project failure.
      • Increases job satisfaction for developers who see their work implemented quickly.
    • Disadvantages:
      • Less visible process, potentially harder to plan and control.
      • Can be more expensive than waterfall development due to potentially more complex process and experienced staff needs.
    • Best for: Projects with potentially evolving requirements, as it provides opportunities for adaptation and feedback.

    Integration and Configuration

    • This approach focuses on building systems from existing components or software packages.
    • Example: Utilizing Commercial-off-the-shelf (COTS) software and configuring it for a specific purpose.
    • Advantages:
      • Reduces costs and risks as less software is developed from scratch.
      • Enables faster delivery.
    • Disadvantages:
      • Requirements compromises might be necessary, potentially leading to a product not fully meeting user needs.

    AI-Based Learning Management System (LMS) Development

    • Waterfall Approach:
      • Requires upfront definition of all features (e.g., course management, assignment submission).
      • Involves detailed design, implementation in distinct modules, comprehensive testing, and deployment.
      • Advantages: Clear structure, predictability, suitable for stable requirements.
      • Disadvantages: Inflexibility, late feedback, potential for costly changes.
    • Agile Approach:
      • Focuses on developing a basic set of features in short sprints, with continuous feedback and adaptation.
      • Features are released in increments.
      • Advantages: Flexibility, continuous feedback, rapid delivery.
      • Disadvantages: Requires experienced staff, potentially less structured process.
    • Recommendation: Agile approach is generally more appropriate for AI-based LMS development, allowing for continuous adaptation and user feedback, particularly given the evolving nature of AI technology.

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    Ch2 SW Processes.pdf

    Description

    This quiz explores the differences between Agile and plan-driven development methodologies. It covers concepts such as sprints in Agile and the structured phases of the Waterfall model. Test your understanding of each approach's advantages, disadvantages, and best-use scenarios.

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