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Which of the following testing techniques ensures that the software product runs correctly after the changes during maintenance?

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UGC NET Computer Science (Paper 2) Nov 2017 Official Paper
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  1. Path Testing
  2. Integration Testing
  3. Unit Testing
  4. Regression Testing

Answer (Detailed Solution Below)

Option 4 : Regression Testing
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The correct answer is "option 4".

CONCEPT: 

Testing is a process of evaluating software in order to identify any errors contrary to actual requirements. 

Testing ensures that the software product is defect-free.

EXPLANATION: 

option1: Path testing is used to design the test cases.

option2: Integration testing includes the testing of two or more combined modules of the software.

option3: Unit testing includes the testing of every single module or component of the software.

option4: Regression testing is used to test modified parts of code & parts affected by the code to ensure that software doesn't have any defect after modifications.

Hence, Regression Testing ensures that the software product runs correctly after the changes during maintenance.

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