Which of the following is not a type of software testing?OptionsBlack-box testingWhite-box testingBlue-box testingGrey-box testing

Step 1: Identify the Options

The options presented are:

1. Black-box testing
2. White-box testing
3. Blue-box testing
4. Grey-box testing

Step 2: Recall Software Testing Types

• Black-box testing: Testing based on the outputs given specific inputs, without knowing the internal workings of the application.
• White-box testing: Testing based on knowledge of the internal code structure and logic.
• Grey-box testing: A combination of both black-box and white-box testing, where the tester has partial knowledge of the internal workings.

Step 3: Determine the Odd One Out

• Blue-box testing: This term is not commonly recognized as a standard type of software testing.

Step 4: Conclusion

Thus, the type of software testing that is not recognized or is commonly referred to in the industry is Blue-box testing.

Final Answer

Blue-box testing is not a type of software testing.