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ISTQB-Foundation -chapter4-question22

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4.3 White-box Test Techniques

FL-4.3.1 (K2) Explain statement testing

        2. You run two test cases, T1 and T2, on the same code. Test T1 achieved 40% statement coverage and test T2 achieved 65% statement coverage.

Which of the following sentences must be necessarily true?

a)  The test suite composed with tests T1 and T2 achieves 105% statement coverage

b)  There exists at least one statement that must have been executed by both T1 and T2    

c)  At least 5% of the statements in the code under test are non-executable    

d)  The test suite composed of tests T1 and T2 achieves full branch coverage 

Answer Explanation