Computer Science Pathway EOPA Practice Test 2026 - Free Computer Science EOPA Practice Questions and Study Guide

Finding and fixing defects during software development is what debugging is about. Debugging involves identifying where a fault occurs, tracing its root cause in the code, and applying a fix so the program behaves correctly. It often follows testing, which is the process of running the software to uncover failures; testing helps reveal bugs, while debugging resolves them.

Other activities serve different goals: optimizing aims to improve performance or efficiency, and refactoring reorganizes code to improve readability and maintainability without changing what the program does from the user’s perspective. These can be important for quality, but they aren’t specifically about locating and repairing defects.