Important testing questions which can be asked during interviews

I have listed few of the manual interview questions which can be asked for fresher to mid level QA's.

1. Explain Stub?
- Stub is a substitute for actual code when top down integration is conducted.

2. What do you mean by a driver?
- Driver is a substitute for actual code when bottom down integration is conducted.

3. Explain Big Bang Integration?
- When all the modules are integrated together then it is called as Big Bang Integration.

4. Explain Retesting and Regression testing?
- Retesting is a type of testing which is carried out to test the defect which was found in the previous build and to verify if the defect is fixed.
- Regression testing is a type of testing which is carried out to test the whole module in which the defect was fixed i.e. all the test cases of the module are run along with the defect fixed to check if the defect which was fixed has affected any other functionality.

5. Explain Smoke and sanity testing?
- Smoke testing is a type of testing which is carried out to check if the major functionality of the application is working as per the spec. A smoke test plan checklist is run to check if the build can be further tested.
- Sanity testing is type of testing which is carried out to check if all the functionality are working fine after minor fix of defect is conducted or when moving to a new environment.

6. Explain the difference between Latent and Masked defect?
- Latent defect is a defect which is found in the current release but the defect was introduced in the previous releases.
- When a defect is hiding another defect then the hidden defect is called as Masked defect.