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Software Design and Implementation: Chapter 7 Lecture 1
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Software Design and Implementation: Chapter 7 Lecture 1

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Questions and Answers

In software engineering, what is the stage at which an executable software system is developed?

  • Software design
  • Implementation (correct)
  • Requirement gathering
  • Software maintenance
  • What is the main focus of software design?

  • Writing code based on requirements
  • Identifying software components and their relationships (correct)
  • Testing the software system
  • Debugging and fixing issues
  • What does COTS stand for in the context of off-the-shelf systems?

  • Company of Technology Systems
  • Commercial Off-The-Shelf (correct)
  • Complex On-The-Spot
  • Customized Off-The-Shelf
  • When developing an application using off-the-shelf systems, what is the design process primarily concerned with?

    <p>Adapting and tailoring the system to meet requirements</p> Signup and view all the answers

    What is UML primarily used for in object-oriented design?

    <p>Documenting software designs</p> Signup and view all the answers

    Why is it possible to buy off-the-shelf systems for a wide range of domains?

    <p>To reduce the time and cost of developing a system from scratch</p> Signup and view all the answers

    What is the primary purpose of a system context model in object-oriented design?

    <p>To demonstrate the interaction between different system components</p> Signup and view all the answers

    In structured object-oriented design processes, why may it not be cost-effective to develop and maintain design models for small systems?

    <p>Because it requires a lot of effort for development and maintenance</p> Signup and view all the answers

    What is an interaction model in object-oriented design?

    <p>A model that shows how the system interacts with its environment as it is used</p> Signup and view all the answers

    What are the common activities in object-oriented design processes?

    <p>All of the above</p> Signup and view all the answers

    What is the essential purpose of understanding the relationships between software and its external environment in object-oriented design?

    <p>To decide what features are implemented in the system being designed</p> Signup and view all the answers

    What is a use case in object-oriented design?

    <p>An activity that specifies the flow of events in a system</p> Signup and view all the answers

    Why are design models considered important communication mechanisms for large systems developed by different groups?

    <p>To provide a common understanding among different development groups</p> Signup and view all the answers

    What is the primary purpose of specifying object interfaces in object-oriented design?

    <p>To define how objects communicate with each other</p> Signup and view all the answers

    What does a weather station use case 'Report weather' primarily involve?

    <p>The sending of a summary of weather data collected to a weather information system</p> Signup and view all the answers

    Why might it not be cost-effective to develop and maintain design models for small systems according to structured object-oriented design processes?

    <p>Because developing and maintaining these models require a lot of effort</p> Signup and view all the answers

    In the software engineering process, what is the stage at which an executable software system is developed?

    <p>Software design and implementation</p> Signup and view all the answers

    What is the primary concern of the design process when developing an application using off-the-shelf systems?

    <p>How to adapt and use the configuration features of the off-the-shelf system</p> Signup and view all the answers

    What is UML primarily used for in object-oriented design?

    <p>Modeling software systems</p> Signup and view all the answers

    Why is it now possible to buy off-the-shelf systems for a wide range of domains?

    <p>Because it is cheaper and faster than developing a system from scratch</p> Signup and view all the answers

    What is the essential purpose of understanding the relationships between software and its external environment in object-oriented design?

    <p>To identify software components and their relationships</p> Signup and view all the answers

    Which of the following is an essential consideration in structured object-oriented design processes?

    <p>Understanding the relationships between the software being designed and its external environment</p> Signup and view all the answers

    What is a common activity in object-oriented design processes?

    <p>Developing design models</p> Signup and view all the answers

    What type of model demonstrates the other systems in the environment of the system being developed?

    <p>System context model</p> Signup and view all the answers

    What is the primary focus of understanding the context of a system in object-oriented design?

    <p>To establish the boundaries of the system</p> Signup and view all the answers

    What does a weather station use case 'Report weather' primarily involve?

    <p>Sending a summary of weather data to an information system</p> Signup and view all the answers

    Why are design models considered important communication mechanisms for large systems developed by different groups?

    <p>To provide a common understanding of the system's structure and operation</p> Signup and view all the answers

    What is the purpose of specifying object interfaces in object-oriented design?

    <p>To define how objects interact with each other</p> Signup and view all the answers

    'An interaction model shows how the system interacts with its environment as it is used' - This statement describes which type of model?

    <p>Dynamic model</p> Signup and view all the answers

    'Defining the context and interaction models of use of the system' is a common activity in object-oriented design processes. What is meant by 'context' in this context?

    <p>'Context' refers to understanding relationships with external environment</p> Signup and view all the answers

    'Developing a number of different system models' is stated as an essential part of structured object-oriented design processes. What might make this NOT cost-effective for small systems?

    <p>'Small systems' may not have enough complexity to justify the effort</p> Signup and view all the answers

    What is the primary goal of program testing?

    <p>To demonstrate that the software meets its requirements</p> Signup and view all the answers

    Why is testing considered part of a more general verification and validation process?

    <p>Because it can reveal the presence of errors but not their absence</p> Signup and view all the answers

    What is the main purpose of user testing?

    <p>To discover situations where the behavior of the software is incorrect</p> Signup and view all the answers

    Why should there be at least one test for every requirement in the requirements document for custom software?

    <p>To demonstrate that the software meets its requirements</p> Signup and view all the answers

    What does program testing intend to reveal?

    <p>The presence of errors NOT their absence</p> Signup and view all the answers

    Why is testing intended to show that a program does what it is intended to do?

    <p>To demonstrate that the software meets its requirements</p> Signup and view all the answers

    What is the primary goal of defect testing in software testing?

    <p>To discover faults or defects in the software where its behavior is incorrect or not in conformance with its specification</p> Signup and view all the answers

    What is the main difference between validation testing and defect testing?

    <p>Validation testing uses test cases that reflect how the system is normally used, while defect testing uses deliberately obscure test cases</p> Signup and view all the answers

    What does verification in software inspections involve?

    <p>Discovering anomalies and defects by examining the source representation</p> Signup and view all the answers

    What is a significant advantage of inspections over testing?

    <p>Inspections do not require execution of a system, so there are no concerns with interactions between errors</p> Signup and view all the answers

    What is the main focus of software inspections?

    <p>Analysis of the static system representation to discover problems</p> Signup and view all the answers

    What is the primary purpose of understanding the context of a system in object-oriented design?

    <p>To understand how the system interacts with its environment</p> Signup and view all the answers

    What is an essential consideration in structured object-oriented design processes?

    <p>Understanding how the system interacts with its environment</p> Signup and view all the answers

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