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iSQI CTFL_Syll_4.0 Exam - Topic 1 Question 16 Discussion
Topic #: 1
Test automation allows you to:
Defect: A flaw in a component or system that can cause the component or system to fail to perform its required function, e.g. an incorrect statement or data definition. A defect, if encountered during execution, may cause a failure of the component or system.
Failure: An event in which a component or system does not perform a required function within specified limits.
Mistake: A human action that produces an incorrect result.
Therefore, out of the five given statements, only two are correct, namely:
A human mistake may produce a defect: This is true, as a mistake is a source or cause of a defect, e.g. a programmer may make a mistake in writing a code statement, which results in a defect in the software component.
When a defect exists in a system it may result in a failure: This is true, as a defect is a potential or actual cause of a failure, e.g. a defect in the software component may cause the system to fail to perform a required function when the defect is encountered during execution.
The other three statements are incorrect, namely:
Defects are a result of environmental conditions and are also referred to as ''Failures'': This is false, as defects are not a result of environmental conditions, but of mistakes or other factors, and defects are not the same as failures, but rather the causes of failures.
A system will totally fail to operate correctly when a failure exists in it: This is false, as a system may not necessarily fail completely or stop operating when a failure occurs, but may continue to operate with reduced functionality or performance, or with incorrect results.
Defects occur only as a result of technology changes: This is false, as defects can occur due to various reasons, not only technology changes, such as human mistakes, design flaws, requirement changes, hardware failures, etc.
1: ISTQB Glossary of Testing Terms 4.0, 2023, available at ISTQB) and ASTQB).
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