Exam CTAL-TTA Topic 1 Question 21 Discussion

Actual exam question for ISTQB's CTAL-TTA exam
Question #: 21
Topic #: 1
A unit test should be isolated Which option correctly describes the meaning of 'isolated' as a characteristic of a unit test?
SELECT ONE OPTION
Whenever it is run under the same conditions, it should produce the same results.

Suggested Answer: C Vote an answer

The term 'isolated' as a characteristic of a unit test means that it should test only the code for which it was originally written. This ensures that the unit test is focused, minimizes dependencies on other parts of the codebase, and errors can be traced back to specific units without ambiguity .

by Vincent at Nov 05, 2025, 12:09 AM

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