Diff between test plan and test strategy Diff between test case and test scenario How to find the quality of a software Diff between defect, bug , error and failure etc

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Answers to common interview questions for Senior Tester position

Test plan outlines the scope, approach, resources, and schedule for testing while test strategy defines the testing approach and techniques to be used
Test case is a specific input and expected output while test scenario is a sequence of test cases
Quality of software can be measured through various metrics such as defect density, code coverage, and user satisfaction
Defect is a deviation from expected behavior, bug is a coding error, error is a mistake made by a human, and failure is the inability of the system to perform its intended function