Software Testing Interview Questions and Answers

Software Testing Interview questions with answers explain in simple language and most commonly asked interview question for software testing are included along with answers.

1. What is software testing?

Software testing is the process of  verifying the software functionality and produce software products of good standards without defects, bugs and failure.

2. What are the objective of Software Testing?

Software Testing is determined the defects, bugs and faults before reaching the clients. It helps to ensure software quality.

3. Why Software Testing is necessary?

If the errors occurs after the software products are used by clients, then there will be huge financial as well as decrease of brand value. Thus, by software testing , the product will be bug free and ensure it will works as specified.

4. What is bug?

Bug is an errors, fault in coding of software programs which results in malfunction of the software product.

5. Define fault?

In a software program, when there is incorrect program syntax, step or function, it will be considered fault in the software program.

6. What is failure?

Failure occurs when a software programs fails to meet the software requirements or functions due to software components unable to fulfilthe specified task.

7. What is defect?

When the software outputs results in unexpected outputs, it called as defect in the software program.

8. What are the difference between defect, error, fault, bug and failure in software testing?

A mistake in coding is called error ,error found by tester is called defect, defect accepted by development team then it is called bug ,build does not meet the requirements then it Is failure.

9. What is functional Testing?

Functional testing is a testing and validating process for clients specification and to meets all the requirements of the clients.

10. What is exploratory testing?

In Exploratory Testing, there will be simultaneous learning about the program and design while executing test cases.

11. What is Test Log?

Test Log contains complete list of action performs during software testing process and from test log we can know whether the test is passed or failed.

12. What is debugging?

Debugging in software testing is to find and located faults, bugs and errors and fix those errors and bugs to get the desired output and software functionality.

13. What is regression testing?

When a software is changed or modified, retesting to check whether the software functionality are working properly and make sure there are no unintentional bugs in the software. This process of testing is called as Regression Testing.

14. What is Ad Hoc testing?

Ad hoc testing is a process in which there will be no certain plan or test is done randomly without any expected output. Ad Hoc testing is also known as Monkey Testing.

15. What is manual testing?

Manual Testing is a process for finding defects in the software manually by the end user and validating the software functions and features.

16. What is automation testing?

Automation testing is a process in which the pre-script will perform test cases automatically without any interference.

17. Difference between manual testing and automation testing?

Manual testing is performed by users manually and automation testing is done completed automated with the help of pre-script.
Automation testing is fasters, secure and cost effective whereas manual testing is slower, insecure.

18. Explain end to end testing?

End-to-End Testing is a software testing process in which each and every software component is validated and verified from scratch to end of the software. End to End testing is a real world testing process, if we take Social Networking site such as Facebook, Twitter etc. , the following process will be implemented in end to end testing: Signing Up, Logging, Adding Details to profile, Sending messages and finally logging out.

19. What is black box testing?

If a software testing method, in which the users does not know the internal implementation or design of being tested, such testing methods are called as black box testing.

20. Explain gray box testing?

Gray box testing process is combination of Black box testing process and white box testing process.

21. What is white box testing?

In software testing, in which the users knows the internal implementation or design structure of being tested, such testing is known as white box testing.

22. Difference between white box and black box testing?

The difference between black box testing and white box testing are given below:

  • White box testing is a software testing method in which users must know the internal structure implementation whereas in black box testing, it is not necessary to know the internal working modules to the user.
  • In white box testing, users should have programming skills whereas in black box testing, users does not required to have programming skills

23. What are the benefits of black box testing?

Black box testing can be done by any users with little knowledge of programming and it is much faster than the white box testing process. It may results in few errors in the software product because each component and module of the software is not tested.

24. What are the advantages of white box testing?

White box testing ensures better quality software products because each and every components are tested by programmers. It is lengthy process and require much time than black box testing.

25. What are alpha and beta testing?

Alpha testing is usually performed by developers to improve the product quality and make ready for product beta. Beta testing is performed by real scenario such as clients and customers before the release of the product for stability and reliability of software product.

26. What is Software Quality Assurance?

Software Quality Assurance is the process for ensuring the software quality of the product and to implement certain standards for the product without any defects, bugs and fully implemented software product.

27. What is bottom Up testing?

In bottom up testing, the components of lower levels are tested first and so on until it reaches the top level component in the testing process.

28. What is component testing?

Component testing is also known as module testing. Testing is usually starts with testing of small modules such as component and this process is known as component testing.

29. Explain Top-down Testing?

In top down testing, components of higher levels are tested first and so on until it reaches lower level in the testing process.

30. What is Random Testing?

Random Testing is a software testing process in which random independents inputs are taken and will be validate with the required software output. If the output matches, then the test will be passed or else it will be considered as failed.