Extreme Programming (XP) Questions and Answers for Viva

Answer-1: Extreme Programming (XP) is a software development methodology that emphasizes customer satisfaction, flexibility, and frequent releases.

Answer-2: The key principles of XP are communication, simplicity, feedback, and courage, emphasizing collaborative work, continuous improvement, and customer feedback.

Answer-3: The core practices of XP include pair programming, test-driven development (TDD), continuous integration, collective ownership, and simple design.

Answer-4: Pair programming is a practice where two developers work together at one computer, one writing code and the other reviewing and providing feedback.

Answer-5: TDD is a practice where developers write tests for a feature before writing the code that implements it. This ensures that the code is tested from the start.

Answer-6: Continuous integration involves frequently integrating new code into the main codebase, typically multiple times a day, ensuring that the codebase is always in a working state.

Answer-7: Feedback is gathered through frequent testing, pair programming, and customer interaction. This allows for rapid adjustments and continuous refinement.

Answer-8: Collective ownership means that all team members are responsible for all parts of the codebase, ensuring that the code is maintained and improved collaboratively.

Answer-9: XP emphasizes keeping the design simple and implementing only what is necessary, avoiding unnecessary complexity. Simplicity ensures easier maintenance and flexibility.

Answer-10: "The Planning Game" is a practice in XP where the development team collaborates with the customer to prioritize features, balancing the scope, schedule, and costs.

Answer-11: XP handles changes in requirements by embracing flexibility, allowing for changes even late in the development process, and continuously incorporating customer feedback.

Answer-12: Refactoring is the process of improving the design of existing code without changing its functionality. In XP, refactoring is done continuously to improve the system's structure.

Answer-13: XP encourages constant communication through practices like pair programming, daily stand-ups, and close collaboration with customers.

Answer-14: Customer involvement is critical in XP, as the customer is actively engaged throughout the process, providing continuous feedback and helping prioritize features.

Answer-15: Simple design in XP means implementing the simplest solution that works, avoiding over-engineering, and iteratively refining the design as the system evolves.

Answer-16: XP ensures code quality through practices like test-driven development (TDD), continuous integration, pair programming, and frequent refactoring.

Answer-17: The on-site customer provides real-time feedback, clarifies requirements, and helps prioritize features, ensuring that the development aligns with customer expectations.

Answer-18: XP uses user stories, which are small, manageable tasks, and the team estimates the time required for each story. Estimations are refined continuously based on feedback and progress.

Answer-19: XP manages risk through continuous testing, frequent releases, and close collaboration with the customer, ensuring that problems are identified and addressed early.

Answer-20: The 40-hour week rule in XP emphasizes maintaining a sustainable pace by avoiding overtime, ensuring that developers stay productive and avoid burnout.

Answer-21: XP promotes a collaborative and communicative work environment where developers and customers work closely together. The environment is focused on simplicity, open communication, and flexibility.

Answer-22: Coding standards ensure consistency and readability of code, making it easier for all team members to work on and maintain the codebase. XP emphasizes adhering to consistent coding practices.

Answer-23: User stories are short, simple descriptions of a feature or functionality written from the perspective of the user or customer. They help define what the system should do.

Answer-24: XP handles iterative development by breaking the project into small, manageable iterations or "releases," each delivering a functional and tested part of the software.

Answer-25: Velocity is a measure of how much work the team can complete in an iteration. It is typically measured in terms of user stories or story points.

Answer-26: XP ensures customer satisfaction by delivering working software frequently, involving customers throughout the process, and continuously adjusting based on feedback.

Answer-27: XP promotes collaboration through pair programming, shared responsibility for code, frequent communication, and collective ownership of the codebase.

Answer-28: Small releases in XP mean delivering software in small, frequent increments, allowing the customer to see progress regularly and provide feedback early.

Answer-29: XP approaches defect management by continuously testing the code, addressing defects immediately when they are found, and preventing the accumulation of unresolved issues.

Answer-30: Continuous testing in XP means running tests frequently, often after every code change, to ensure that new changes do not break the existing functionality.

Answer-31: Simplicity is maintained by focusing only on the most essential features, using simple designs, and avoiding over-engineering. The goal is to create the simplest solution that works.

Answer-32: XP handles software maintenance by keeping the codebase clean through refactoring, maintaining high test coverage, and iterating on the software to address changes and bugs.

Answer-33: Spike solutions in XP are short experiments or prototypes created to explore uncertain or unknown aspects of the project, allowing the team to gather information before implementation.

Answer-34: Storyboarding in XP is a practice used for visualizing user stories, allowing teams to organize and plan features in a way that is easy to understand and manage.

Answer-35: XP improves software quality through practices like test-driven development, pair programming, refactoring, and continuous feedback, ensuring that issues are addressed quickly and that the software evolves correctly.

Answer-36: XP emphasizes simple design and avoids over-complicating the software. The design is continuously refined as new features are added, and the focus is on making the code as simple as possible while meeting the requirements.

Answer-37: Customer feedback is integrated through regular interactions, demos, and reviews, ensuring that the customer?s needs and expectations are consistently addressed.

Answer-38: Planning in XP is done incrementally through short-term planning for each iteration, with the team working together to prioritize features and adjust plans based on feedback.

Answer-39: The metaphor in XP is a shared vision or conceptual model that helps guide the development process, ensuring the team has a common understanding of the system?s design and functionality.

Answer-40: Simple design in XP means creating the simplest possible solution that meets the requirements and focusing on writing clean, maintainable code that avoids unnecessary complexity.

Answer-41: XP ensures development stays on track through practices like daily stand-ups, continuous integration, frequent testing, and short feedback loops with customers.

Answer-42: Benefits of XP include faster delivery of high-quality software, greater customer satisfaction, improved team collaboration, and the ability to handle changing requirements effectively.

Answer-43: Challenges include managing customer involvement, requiring highly skilled developers for pair programming, and adjusting to the fast pace and continuous feedback model.

Answer-44: XP meets deadlines by delivering small, incremental releases, continuously prioritizing customer needs, and ensuring constant feedback and adjustments to stay on schedule.

Answer-45: User story mapping in XP is a technique for visualizing and organizing user stories by grouping them into related features and prioritizing them based on customer needs.

Answer-46: XP maintains high productivity by focusing on simplicity, reducing unnecessary work, emphasizing continuous testing, and keeping a sustainable pace with a 40-hour work week.

Answer-47: XP supports collaborative decision-making through practices like pair programming, daily meetings, and collective ownership of the codebase.

Answer-48: Performance optimization in XP is handled through continuous testing, refactoring, and focusing on keeping the codebase simple and efficient without over-engineering.

Answer-49: XP is an Agile methodology that specifically focuses on technical practices such as TDD, pair programming, and continuous integration, emphasizing engineering excellence.

Answer-50: The "Whole Team" concept in XP emphasizes that the entire team, including developers, testers, and customers, should work collaboratively throughout the project to ensure the success of the software.