Test implementation and execution involve several major tasks, which include:
i. Developing and prioritizing test cases, creating test data, writing test procedures, and optionally preparing the test harnesses and writing automated test scripts. This is crucial for ensuring that all aspects of the software are thoroughly tested and that the tests are prepared systematically.
ii. Creating the test suite from the test cases for efficient test execution. This helps organize the test cases in a way that optimizes the testing process and ensures coverage.
iii. Verifying that the test environment has been set up correctly. Ensuring that the test environment is correctly configured is critical for valid test results.
iv. Determining the exit criteria is part of the test planning phase, not the implementation and execution phase.
According to the ISTQB CTFL Syllabus, version 4.0, these activities are critical for the successful implementation and execution of tests. Therefore, the statement "i, ii, iii are true and iv is false" accurately reflects the tasks involved in this phase.