Answer:
There are different levels of the testing that are:
Unit testing:
The unit testing basically test the individual components in the software testing. It is the small testable part in the software that is used for testing.
Integration testing:
It basically test the integrated components in the software testing. The integration testing evaluate the specific requirement and functionality of the system.
System testing:
The system testing involve with the process of testing the entire system in the software testing. It basically evaluate the entire system and its specific requirement in the software system testing.