Which activity takes place in the Preparation phase?

See the illustration below:

To test a registration application for a weekend trip, logical test cases must be created in accordance with the Data Combination Test. In addition, it has been agreed that less depth testing must be performed. One data pair has been defined that must be fully tested in combination:

• car - attraction

Eight test cases are designed using a classification tree.

Where must the 'bullets' for test case 4 be placed?

See the definition below:

Tests in which the supplying party demonstrates that the product particularly meets the functional and non-functional specifications and the technical design, among other things.

Of which test level is this the definition?

With which units do you best start the unit integration test?