D424 Software Engineering Capstone
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Free D424 Software Engineering Capstone Questions
1. What is requirements validation in the context of requirements engineering?
- The process of verifying hardware specifications
- Checking the requirements for validity, consistency, completeness, realism, and verifiability
- Verifying user interface design
- Documenting all requirements without validation
Explanation
Requirements validation is the process of ensuring that the documented requirements accurately represent the needs and expectations of stakeholders. It checks for validity, consistency, completeness, realism, and verifiability. The goal is to confirm that the right system is being built before development begins, preventing costly rework later in the project lifecycle.
2. Explain how user stories contribute to the software development process in Extreme Programming. What role do they play in scheduling and cost estimation?
- User stories provide a detailed technical specification for developers.
- User stories are used to create implementation tasks that inform the schedule and cost estimates.
- User stories are only for documenting user feedback after the project is completed.
- User stories replace the need for any other form of requirements documentation.
Explanation
In Extreme Programming (XP), user stories are short, simple descriptions of features from the user's perspective. They help define system functionality in business terms and guide development priorities. These stories are broken down into smaller implementation tasks, which developers use to estimate effort, plan schedules, and allocate resources. This keeps planning flexible and aligned with user needs.
3. Explain why focused ethnography may be beneficial in understanding user requirements in software development.
- It allows for the collection of quantitative data
- It provides insights based on real user interactions and prototypes
- It focuses solely on theoretical frameworks
- It eliminates the need for user feedback
Explanation
Focused ethnography helps software developers understand user requirements by observing real users interacting with systems in their natural work environments. This approach captures authentic behaviors, challenges, and needs that might not surface through interviews or surveys alone. By analyzing these real-world interactions, developers can design more intuitive, user-centered systems that truly meet end-user expectations.
4. Scrum is a project development method specific to what type of project?
- Lean Process Management
- Total Quality Management
- Agile programming
- The Customer Experience Method
Explanation
Scrum is a framework used within Agile programming to manage complex software projects. It emphasizes iterative development, team collaboration, and flexibility. Through short development cycles called sprints, Scrum enables teams to adapt quickly to changing requirements, deliver incremental value, and continuously improve the product based on feedback.
5. Explain why continuous integration is essential for the success of scaling agile methods.
- It allows for more frequent releases and reduces integration issues.
- It eliminates the need for testing.
- It focuses solely on documentation.
- It encourages individual work over team collaboration.
Explanation
Continuous integration (CI) ensures that code changes are frequently merged, tested, and validated in a shared repository. This practice helps detect errors early, reduces integration conflicts, and enables rapid feedback—key factors in large, multi-team Agile projects. By supporting frequent releases and ensuring system stability, CI promotes collaboration, consistency, and scalability across development teams.
6. Which of the following is NOT one of the review checks mentioned in the overview of software engineering?
- Verifiability
- Comprehensibility
- Traceability
- Scalability
Explanation
Review checks in software engineering typically focus on aspects that ensure the system’s correctness, clarity, and maintainability—such as verifiability, comprehensibility, and traceability. These checks help confirm that requirements can be tested, understood, and linked back to their origins. Scalability, however, refers to system performance under load and is not part of the standard review check criteria in requirement or design reviews.
7. Explain the significance of non-functional requirements in software engineering and provide an example of each classification: Product, Organizational, and External.
- They define the system's behavior; Product: Performance, Organizational: Compliance, External: Usability
- They are irrelevant; Product: Features, Organizational: Cost, External: Speed
- They only relate to user interface; Product: Aesthetics, Organizational: Training, External: Accessibility
- They are only about security; Product: Encryption, Organizational: Policies, External: Regulations
Explanation
Non-functional requirements specify quality attributes that determine how well a system performs rather than what it does. They ensure reliability, usability, and compliance. Product requirements (e.g., performance) describe system behavior, Organizational requirements (e.g., compliance) relate to standards or processes, and External requirements (e.g., usability) come from external sources like regulations or user expectations. They are critical for ensuring system quality and user satisfaction.
8. What is the primary focus of Computer Science (CSC) compared to Software Engineering?
- Practicalities of software delivery
- Theory and fundamentals
- User requirements
- Agile methodologies
Explanation
Computer Science (CSC) focuses on the theory and fundamentals of computation, algorithms, data structures, and the principles underlying programming and system design. In contrast, Software Engineering applies these theories to the practical development and management of software systems, emphasizing processes, tools, and methodologies for reliable software delivery.
9. Which of the following statements best describes the approach to developing safety control systems in software engineering?
- They should be developed using iterative prototyping.
- They should be completely done and analyzable.
- They can be managed using agile methodologies.
- They require minimal documentation.
Explanation
Safety control systems are critical and high-risk, so they must be completely done and analyzable before deployment. These systems require thorough specification, verification, and validation to ensure reliability and safety under all conditions. Unlike typical software, incomplete or rapidly changing iterations could introduce risks, making rigorous analysis and documentation essential before release.
10. Which of the following is NOT one of the key attributes of requirements checking in software engineering?
- Validity
- Consistency
- Completeness
- Simplicity
Explanation
Key attributes of requirements checking—such as validity, consistency, and completeness—ensure that software requirements are accurate, non-conflicting, and fully address user needs. Simplicity, while desirable in design and code, is not a formal attribute of requirements checking. This process focuses on ensuring correctness and clarity rather than reducing complexity.
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