Refactoring

5 minutes 5 Questions

Refactoring is the process of improving the structure and readability of existing code without modifying its external behavior. In XP, developers are encouraged to continually refactor the code to keep it clean and maintainable. A key principle of refactoring is that it should be performed in small…

Test mode:

Exam (Timed)

Practice (With explanations)

Start practice test

Question 1

During the refactoring process in an Agile project, the team encounters a section of code that is difficult to understand and refactor. What is the best course of action for the team?

Refactor the code without understanding it Use trial and error to refactor the code Consult with the original author or seek a team member's advice Re-write the entire code from scratch Ignore the code and focus on other areas Implement temporary workarounds

Correct Answer: Consult with the original author or seek a team member's advice

When encountering difficult-to-understand code, the best course of action is to consult with the original author or seek advice from a team member with relevant experience. This helps minimize risks and ensures that the code is refactored correctly. Other options such as rewriting the code from scratch or using trial and error may introduce new defects or cause wasted effort.

Question 2

A member of your Agile team suggests refactoring a specific code module even though it is currently working correctly. Other team members are hesitant to make changes. What is the best reason to refactor this module?

The code is difficult to understand and may cause future issues The module doesn't follow a specific coding style The module has never been refactored before The developer is personally interested in the module A team member has nothing else to work on Refactoring will likely introduce defects

Correct Answer: The code is difficult to understand and may cause future issues

The primary goal of refactoring is to improve code quality and maintainability. If the module is difficult to understand, it can cause future issues as other team members may have trouble updating or modifying it. This is the strongest reason to refactor the code. Other options do not provide a strong rationale for refactoring.

Question 3

During a sprint review, stakeholders raise concerns about the maintainability of the codebase in an Agile project. The team agrees to prioritize refactoring in the next sprint. What is the most effective way to plan refactoring tasks?

Create separate refactoring sprints Assign refactoring to specific team members only Deal with refactoring in an ad-hoc manner Dedicate an entire sprint to refactoring Integrate refactoring tasks into the sprint backlog Plan refactoring after all other tasks are completed

Correct Answer: Integrate refactoring tasks into the sprint backlog

Integrating refactoring tasks into the sprint backlog allows for better planning and visibility of the work while maintaining the regular sprint cadence. Other alternatives like dedicating a whole sprint to refactoring or dealing with refactoring ad-hoc may disrupt the project flow or lead to inefficient use of time.

🎓 Unlock Premium Access

Agile Project Management + ALL Certifications

Refactoring

Guide: Understanding Refactoring in Extreme Programming

Agile Project Management - Refactoring Example Questions

Question 1

Question 2

Question 3

🎓 Unlock Premium Access