CTFL-v4 Testing Throughout the SDLC Practice Question
Which TWO of the following are valid reasons for performing maintenance testing?
⚠ Common exam trap
Candidates often mistakenly believe maintenance testing only applies to major upgrades, ignoring that bug fixes and environment migrations also require formal maintenance testing cycles.
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
✓
To verify that a bug fix has been successfully implemented.
Maintenance testing is performed when an existing system is modified, migrated, or retired. Even minor changes, like a configuration update or a library patch, can introduce unintended regressions. By performing maintenance testing, organizations ensure that the new changes don't break existing features and that the system continues to perform reliably in its production environment after modifications have been applied.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
To verify that a bug fix has been successfully implemented.
Why this is correct
When a bug is fixed, confirmation testing is performed to verify the fix, followed by regression testing to ensure the change did not introduce new issues. This is a core part of maintenance testing, ensuring the integrity of the existing system after a patch or update is applied.
- ✗
To replace all existing test cases with new ones.
Why it's wrong here
Maintenance testing aims to reuse existing test assets where possible to ensure continuity. Replacing all test cases would be inefficient and risky, as existing tests represent the accumulated knowledge of the system's behavior and are necessary to verify that old functionality still works as expected.
- ✓
To test the system after a migration to a new platform.
Why this is correct
Platform migration (e.g., moving to a new OS or cloud provider) can significantly alter the execution environment. Maintenance testing is essential here to verify that the application still behaves correctly and that performance levels remain stable in the new technical context of the platform.
- ✗
To prevent the need for any future updates.
Why it's wrong here
Maintenance testing is specifically conducted to support future updates, not to eliminate them. Software inevitably requires maintenance to adapt to changing environments, new security requirements, and evolving business needs; the goal is to manage the quality of those necessary changes, not to stop them entirely.
- ✗
To eliminate the need for documentation updates.
Why it's wrong here
Maintenance testing focuses on the system's behavior, not on documentation management. In fact, maintenance testing often uncovers gaps in the documentation, and good practice dictates that documentation should be updated concurrently with the software changes, not that testing can somehow eliminate the need for such updates.
About these practice questions
This CTFL-v4 question is part of Courseiva's 144-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official ISTQB exam blueprint
This CTFL-v4 practice question is part of Courseiva's free ISTQB 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 CTFL-v4 exam.