Why is regression testing important during maintenance testing?

It verifies that a specific defect fix resolves the original issue

It ensures that unchanged functionality remains intact after a change

It validates that the software meets all user requirements

It determines the extent of changes needed for the maintenance release

A defect was reported in the search function. The developer fixed the code and handed it to the tester. What should the tester do first?

Run the search test cases to verify the fix resolves the original defect.

Perform impact analysis to determine the scope of the fix.

Run all regression tests to ensure no other functionality is broken.

Update the test plan to include new test cases for the search function.

An organization is migrating from one database vendor to another. The application code is unchanged, but the database queries are being modified to be compatible with the new vendor. The team has a limited budget. What is the most appropriate testing strategy?

Run the full regression suite to ensure all functionality works.

Skip testing because the application code is unchanged.

Perform impact analysis to identify affected queries, then run regression tests on the affected areas.

Run only the tests for the modified queries.

A tester is working on a defect fix. The developer fixed the defect and also made a small change to a related function to improve performance. The tester re-ran the original defect test and it passed. What should the tester do to ensure the fix is complete?

Run confirmation testing on the original defect and regression testing on the related function.

Ask the developer to revert the performance change.

Run only confirmation testing on the original defect.

Run only regression testing on the related function.

Certified Tester Foundation Level

Domain 2Objective 4

Confirmation, Regression, and Maintenance Testing CTFL Practice Questions (Page 5)

Part of the Domain 2: Testing Throughout the Software Development Lifecycle domain, which makes up ~16% of our current practice bank. ISTQB does not publish an official question count, but from its 60-minute exam (~25–40 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 27 practice questions to prepare you well beyond it. (estimate)

27questions here

6free pages

6concepts

Questions 21–25

21foundation · easy
Why is regression testing important during maintenance testing?
Select an answer first
22application · medium
A defect was reported in the search function. The developer fixed the code and handed it to the tester. What should the tester do first?
Select an answer first
23expert · hard
An organization is migrating from one database vendor to another. The application code is unchanged, but the database queries are being modified to be compatible with the new vendor. The team has a limited budget. What is the most appropriate testing strategy?
Select an answer first
24expert · hard
A tester is working on a defect fix. The developer fixed the defect and also made a small change to a related function to improve performance. The tester re-ran the original defect test and it passed. What should the tester do to ensure the fix is complete?
Select an answer first
25foundation · easy
A tester executes a test case that previously failed due to a defect. After the developer applies a fix, the tester runs the same test case again and it now passes. What is this activity called?
Select an answer first

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