Understanding Pair Programming
Pair programming is a software development technique where two Developers work collaboratively on the same task. This practice emphasizes teamwork, continuous feedback, and enhanced code quality by leveraging the strengths of both participants.
Exam Question
What is pair programming?
(choose the best answer)
A. Developers that are able to write code both in the back-end and front-end.
B. Two persons working on the same Product Backlog item trying to get it done as soon as possible.
C. A Tester and Developer working together to ensure high quality.
D. Two Developers working on the same problem, at the same computer (physically or virtually), at the same time.
Correct Answer
D. Two Developers working on the same problem, at the same computer (physically or virtually), at the same time.
Explanation
Correct Answer
D. Two Developers working on the same problem, at the same computer (physically or virtually), at the same time:
Pair programming involves two Developers working together on the same task. One Developer acts as the “Driver,” who writes the code, while the other is the “Navigator,” who reviews the code and provides feedback. The two Developers frequently switch roles, ensuring continuous peer review and knowledge sharing, which enhances the quality and maintainability of the code.
Why the Other Options Are Incorrect
A. Developers that are able to write code both in the back-end and front-end:
This describes a full-stack Developer, not pair programming. Pair programming specifically involves two Developers working together on the same piece of code.
B. Two persons working on the same Product Backlog item trying to get it done as soon as possible:
While two people may work together on a Product Backlog item, pair programming is about two Developers working on the same code at the same time, rather than just collaborating to complete a task quickly.
C. A Tester and Developer working together to ensure high quality:
Collaboration between Testers and Developers is important, but pair programming specifically refers to two Developers working together on code, not a Developer and a Tester.
Relevance to the PSD Exam
Understanding pair programming is crucial for the PSD exam as it highlights the benefits of collaboration, continuous feedback, and peer review in software development, all of which contribute to higher quality code and more efficient workflows.
Key Takeaways
- Pair programming involves two Developers working together on the same problem, fostering collaboration and continuous code review.
- Roles in Pair Programming: Typically, one Developer acts as the Driver (writing code) and the other as the Navigator (reviewing and providing feedback).
Conclusion
Pair programming is a valuable practice in Agile development that enhances code quality and fosters collaboration between Developers. By understanding and effectively applying this technique, Scrum Teams can improve their productivity and the quality of their deliverables. For more information on preparing for the PSD exam, visit our Professional Scrum Developer PSD™ Exam Prep.
