Certified Quality Engineer Interview Question:

Which methodologies do you used to develop test cases in Quality Engineering?

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Error Guessing:
The tester has to guess what fault might occur and to design the tests to represent them.
Equivalence Class Partitioning:
The input domain data is divided into different equivalence data classes; take few valid values with 2 invalid values. This is used to reduce the total number of test cases to a finite set of testable test cases.
Boundary value analysis:
Boundary value analysis testing technique is used to identify errors at boundaries rather than finding those exist in center of input domain. Boundary value analysis is a next part of Equivalence.
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