FC0-U71 Software Development Concepts Practice Question
A team is testing a software application after a bug fix. They want to ensure that the fix did not introduce new bugs in previously working functionality. Which type of testing should they perform?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Regression testing
Regression testing verifies that recent changes have not adversely affected existing features.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Regression testing
Why this is correct
Regression testing re-runs previously passing test cases to confirm the bug fix has not broken existing functionality. It directly targets the stem's constraint of detecting newly introduced defects in features that worked before the change.
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User acceptance testing
Why it's wrong here
User acceptance testing validates that the system meets business needs and is fit for release, so it cannot detect regressions in existing functionality. It is tempting because it confirms the fix satisfies the user, but regression testing, which re-runs previously passing test cases, is the correct choice here.
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Integration testing
Why it's wrong here
Integration testing verifies interactions between modules or services, not whether previously working features still pass after a change. It is tempting because the fix may span components, but regression testing re-executes the existing test suite to catch newly introduced defects in unchanged functionality.
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Unit testing
Why it's wrong here
Unit testing exercises individual components in isolation, so it cannot verify that untouched functionality still works after a fix. It is tempting because it is the first testing level performed after code changes, but regression testing is the type that re-runs existing tests against previously working features.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This FC0-U71 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FC0-U71 exam.