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ISTQB Exam CTAL-TTA Topic 6 Question 28 Discussion

Actual exam question for ISTQB's CTAL-TTA exam
Question #: 28
Topic #: 6
[All CTAL-TTA Questions]

Consider the following specification:

If you are flying with an economy ticket, there is a possibility that you may get upgraded to business class, especially if you hold a gold card in the airline's frequent flier program. If you don't hold a gold card, there is a possibility that you will get 'bumped' off the flight if it is full when you check in late.

This is shown in the control flow graph below. Note that each box (i.e., statement, decision) has been numbered.

Three tests have been run:

Test 1: Gold card holder who gets upgraded to business class

Test 2: Non-gold card holder who stays in economy

Test 3: A person who is bumped from the flight

What is the level of decision coverage achieved by these three tests?

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Suggested Answer: C

Stress testing is the most appropriate method for identifying weak areas in code that may cause performance issues, especially under conditions of extreme load or stress. This type of testing deliberately pushes the system beyond its normal operational capacity to see how it behaves under stress, which can help reveal vulnerabilities in error recovery and transactional integrity that are not apparent under normal conditions. Stress testing can provide early insights into potential failure points and help prioritize areas for improvement before full-scale deployment.


Contribute your Thoughts:

Ceola
6 days ago
I think the answer is C) 75%. The control flow graph shows 4 decision points, and the 3 tests cover 3 of them, which gives 75% decision coverage.
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Ernie
8 days ago
I'm not sure, but I think it might be 75%.
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Delpha
11 days ago
I agree with Ming, the tests cover 67% of the decisions.
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Ming
16 days ago
I think the level of decision coverage achieved is 67%.
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