Software Development Models Quiz
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Questions and Answers

What is a key advantage of the evolutionary approach in software development?

  • It permits incremental delivery of the system. (correct)
  • It allows for immediate full system implementation.
  • It eliminates all risks associated with software development.
  • It ensures complete customer involvement at all stages.

    • Why is the spiral model considered a meta model?

  • It is the most cost-effective development model.
  • It is the simplest model for development.
  • It covers and integrates all other life cycle models. (correct)
  • It incorporates planning and execution phases.

    • What primary factor may deter the use of the spiral model in ordinary projects?

  • High upfront costs.
  • Limited application to small projects.
  • Inherent complexity of the model. (correct)
  • Lack of customer involvement.

    • How does incremental development benefit customers financially?

    <p>It does not require a large upfront capital outlay.</p> Signup and view all the answers

    What role do system analysts play in the software development process?

    <p>They are responsible for requirement analysis and documentation.</p> Signup and view all the answers

    What is a common consequence of protracted development processes?

    <p>Decreased customer confidence and potential resentment.</p> Signup and view all the answers

    What risk does the spiral model inherently address?

    <p>Technical challenges and uncertainties.</p> Signup and view all the answers

    How does the evolutionary approach differ from monolithic approaches?

    <p>It allows for faster delivery of a working product.</p> Signup and view all the answers

    What is the primary focus during the first quadrant of the spiral model?

    <p>Objective setting</p> Signup and view all the answers

    Which quadrant of the spiral model involves developing and validating the product?

    <p>Third Quadrant</p> Signup and view all the answers

    What is a key characteristic of the spiral model?

    <p>It combines all lifecycle models into one.</p> Signup and view all the answers

    What is a limitation of the classical waterfall model?

    <p>It does not have a mechanism to handle errors.</p> Signup and view all the answers

    In which scenario is the prototyping model particularly useful?

    <p>For developing user-interface components.</p> Signup and view all the answers

    Why might the spiral model be avoided in ordinary projects?

    <p>It involves complex processes.</p> Signup and view all the answers

    What does the iterative waterfall model overcome that the classical waterfall model does not?

    <p>Absence of error handling mechanisms.</p> Signup and view all the answers

    Which life cycle model is noted for being the most widely used?

    <p>Iterative waterfall model</p> Signup and view all the answers

    In which situation is a prototype considered most useful?

    <p>User requirements are not complete</p> Signup and view all the answers

    What is the primary characteristic of the Evolutionary Model?

    <p>Developing a simple working model and improving it incrementally</p> Signup and view all the answers

    What is a significant disadvantage of the Evolutionary Model?

    <p>Dividing the problem into incremental versions can be challenging</p> Signup and view all the answers

    In the Spiral Model, what does each loop represent?

    <p>A phase of the software process</p> Signup and view all the answers

    Which of the following is NOT a characteristic of the Spiral Model?

    <p>Fixed number of loops in the spiral</p> Signup and view all the answers

    What type of projects is the Evolutionary Model particularly suited for?

    <p>Large projects where modular implementation is possible</p> Signup and view all the answers

    What should an analyst aim to remove from the initial customer perception of a problem?

    <p>Ambiguities and inconsistencies</p> Signup and view all the answers

    What is a key advantage of using a prototype during product development?

    <p>It allows engineers to critically examine technical issues</p> Signup and view all the answers

    Which of the following is a critical question for the analyst to understand the project?

    <p>What is the problem?</p> Signup and view all the answers

    Which model is primarily used when user requirements are not clearly defined?

    <p>Prototyping Model</p> Signup and view all the answers

    The functional requirements of a system are primarily concerned with what aspect?

    <p>Specifying the high-level functions the system must perform</p> Signup and view all the answers

    Which of these best describes non-functional requirements?

    <p>They describe characteristics like performance and usability.</p> Signup and view all the answers

    What is the analyst expected to do when inconsistencies are found in the requirements?

    <p>Discuss further with end-users and customers</p> Signup and view all the answers

    Which option best captures the goals of implementation?

    <p>To document general suggestions for development</p> Signup and view all the answers

    What does the term 'data interchange formats' refer to in system analysis?

    <p>The way data will be formatted between different systems</p> Signup and view all the answers

    Which of the following is NOT a focus of the functional requirements of a system?

    <p>Describing system characteristics</p> Signup and view all the answers

    What is a characteristic of a good SRS document?

    <p>It should be concise, unambiguous, and complete.</p> Signup and view all the answers

    Why is a well-structured SRS document important?

    <p>It facilitates easy modifications as customer requirements evolve.</p> Signup and view all the answers

    What does it mean for an SRS document to have a black-box view?

    <p>It defines only the system's external behaviors and requirements.</p> Signup and view all the answers

    What should be characterized in an SRS document regarding undesired events?

    <p>Acceptable responses to exceptional conditions.</p> Signup and view all the answers

    What issue can arise if an organization does not develop an SRS document?

    <p>Developers may not know if their output aligns with customer requirements.</p> Signup and view all the answers

    How does an SRS document assist maintenance engineers?

    <p>It clarifies the system's functionality for easier maintenance.</p> Signup and view all the answers

    What is one major risk of not having a SRS document?

    <p>High costs due to frequent rework.</p> Signup and view all the answers

    Which property ensures that SRS requirements can be validated?

    <p>Verifiable.</p> Signup and view all the answers

    What is the primary purpose of documenting functional requirements?

    <p>To detail the user interaction sequences and expected outputs</p> Signup and view all the answers

    Which of the following best describes the 'Search Book' function in the library system?

    <p>It transforms an author's name into the corresponding book details and locations.</p> Signup and view all the answers

    In the context of the ATM system, what does the 'withdraw-cash' high-level requirement entail?

    <p>Determining account type, availability of funds, and dispensing cash</p> Signup and view all the answers

    What does the input data domain for the withdraw amount specify in the ATM system?

    <p>Amounts between 100 and 10,000 in multiples of 100 only</p> Signup and view all the answers

    Which sequence of actions corresponds to R1.1 in the ATM withdraw-cash function?

    <p>User selects the withdraw amount option</p> Signup and view all the answers

    Which aspect is NOT typically included when documenting functional requirements?

    <p>Description of user experience design</p> Signup and view all the answers

    What type of output does the withdraw-cash function provide when sufficient funds are available?

    <p>The requested cash and printed transaction statement</p> Signup and view all the answers

    What is a key concern for developers during the implementation of a system?

    <p>Planning for future revisions and new devices</p> Signup and view all the answers

    Study Notes

    Waterfall Model

    • A sequential, linear approach to software development
    • Divides development into distinct phases
    • Each phase must be completed before the next can begin

    Iterative Waterfall Model

    • Overcomes shortcomings of the classical waterfall model
    • Involves repeated cycles of the waterfall phases
    • Provides feedback paths for error correction

    Prototyping Model

    • A prototype is a simplified implementation of a system
    • Exhibits limited functionality and low reliability
    • Useful for understanding user needs and clarifying technical solutions

    Evolutionary Model

    • Also called successive versions or incremental model
    • Builds a simple working model initially
    • Subsequently improves functionality incrementally
    • Suitable for large projects needing incremental implementation

    Spiral Model

    • A risk-driven model that combines iterative development with risk analysis
    • Consists of multiple iterations, each with a risk assessment phase.
    • Employs prototypes to mitigate risks
    • Suitable for complex projects with high risks

    Requirement Analysis and Specification

    • Essential for understanding customer needs before development
    • System analysts gather information from the customer to understand requirements and remove ambiguities
    • Includes questions like problem definition, solutions, data inputs/outputs, and possible complexities

    Part of SRC Document

    • Functional requirements of the system
    • Non-functional requirements
    • Implementation goals

    Functional Requirements

    • Describes the high-level functions the system performs
    • Input data and output data are transformed by each function

    Non-Functional Requirements

    • Deals with system characteristics not expressed as functions
    • Example: maintainability, portability, usability

    Properties of a Good SRS Document

    • Concise: Unambiguous and to the point
    • Structured: Easy to understand and modify
    • Black-Box View: Specifies external behavior, not internal details
    • Conceptual Integrity: Clear and understandable
    • Response to Undesired Events: Handles exceptional circumstances
    • Verifiable: Requirements are measurable

    Problems Without an SRS Document

    • System may not meet customer needs
    • Developers lack clarity on requirements
    • Maintenance is difficult
    • User manuals may be inaccurate

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    Related Documents

    Software Development Life Cycle Models PDF

    Description

    Test your knowledge on various software development models, including the Waterfall, Iterative Waterfall, Prototyping, Evolutionary, and Spiral models. This quiz covers key features and advantages of each model to enhance your understanding of software engineering principles.

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