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Question 28 - CTFL-2018 discussion

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Which of the following is NOT a valid use of decision coverage?

A.
Checking that all decisions have been exercised in a single program
Answers
A.
Checking that all decisions have been exercised in a single program
B.
Checking that all decisions have been exercised in a business process
Answers
B.
Checking that all decisions have been exercised in a business process
C.
Checking that all calls from one program module to another have been made correctly
Answers
C.
Checking that all calls from one program module to another have been made correctly
D.
Checking that at least 50% of decisions have been exercised by a test case suite
Answers
D.
Checking that at least 50% of decisions have been exercised by a test case suite
Suggested answer: D

Explanation:

Checking that at least 50% of decisions have been exercised by a test case suite is not a valid use of decision coverage, because it does not meet the minimum criterion of decision coverage, which is to exercise all possible outcomes of each decision in the software under test1.Decision coverage is a technique that measures how much of the logic or branching of the software under test has been exercised by the test cases1. The other options are valid uses of decision coverage.Option A is a valid use of decision coverage, because it can check that all decisions have been exercised in a single program1.Option B is a valid use of decision coverage, because it can check that all decisions have been exercised in a business process1.Option C is a valid use of decision coverage, because it can check that all calls from one program module to another have been made correctly1.

asked 18/09/2024
Corey Workman
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