CTFL_Syll2018 Exam Dumps : ISTQB Certified Tester Foundation Level (Syllabus 2018)

 Frequency 0, 1, 5, 6; Duration 0, 1, 30, 60, 61 is the correct test set of valid and invalid boundary values applying 2-value boundary value analysis1 . Boundary value analysis is a technique that tests the values at and near the boundaries of an input domain or output range1 . A 2-value boundary value analysis tests two values for each boundary: one valid value and one invalid value1 . For Frequency, the valid boundaries are 1 and 5, so the test set should include one valid value (1 or 5) and one invalid value (0 or 6) for each boundary. For Duration, the valid boundaries are 1 and 60, so the test set should include one valid value (1 or 60) and one invalid value (0 or 61) for each boundary. The other options are incorrect test sets of valid and invalid boundary values applying 2-value boundary value analysis. Option A only includes valid values for each boundary, but not invalid values. Option B includes invalid values that are not adjacent to the boundaries (59 seconds and 60 minutes 1 second). Option D includes more than two values for each boundary (0, 1, 2 for Frequency; 0, 1, 30 for Duration).

To achieve 100% statement coverage, you need to execute every statement in the code at least once. In this case, you need two test cases: one where condition A is true and one where condition A is false. This way, you can cover both the DO B statement and the END IF statement. You can find more information about statement coverage in A Study Guide to the ISTQB® Foundation Level 2018 Syllabus, Chapter 4, Section 4.31.

The overall quality of the software can be increased by finding and fixing defects before releasing the software to the customers or users. A test case passes means that no defect was found in the tested functionality, which indicates a high quality. A test case fails, defect gets logged which subsequently gets fixed means that a defect was found and corrected, which improves the quality. Some tests are deferred because test environment is not available means that some functionality was not tested, which may leave some defects undetected, which reduces the quality. A bug is found but there is no corresponding test case means that a defect was found by chance or by other means than planned testing, which does not increase the quality of the testing process or the test coverage.