Answer / manogna

Functional Testing:To test the functionality of the
application is called Functional testing.

After fixing the bug/issue tester will do the retesting and
regression testing.

Regression testing:To ensure that any other functionalities
have been impacted by adding the new functionality (may be a
change request or after fixing the bug by the developer)

Answer / gourisankar

To test all the functionality of the application is called
functional testing.

Regression testing is conducted for 2 reasons
1. Bug fixing
2. Change request (new functionality integrated)

After fixing the issue, have to do regression testing to
make sure that whether fixing of issue impacted on other areas.

Answer / chandrakanta

Functional Testing:

Identifying each and individual sub-system from the system or application and verifying that whether it is working properly as per the CRS or not.

Regression Testing:

Re-executing the test cases to make sure that any modification done in one portion doesn't have any impact to other unchanged portion

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