You need to know the purpose, importance, advantages and disadvantages of testing applications, as well as the impacts of not carrying out testing.

You must understand the structure and contents of test plans and the importance of testing, remedial actions and retesting during application development. You need to know the role of each type of test data (normal, extreme and erroneous).

Finally, the purpose, advantages and disadvantages of each type of testing (technical and user) must be known as well as when and how each type should take place.