ISTQB CTAL-TTA Exam - Topic 6 Question 28 Discussion

Actual exam question for ISTQB's CTAL-TTA exam

Question #: 28
Topic #: 6

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?

A60%

B67%

C75%

D80%

Show Suggested Answer

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.

by Sheridan at Dec 05, 2024, 06:07 PM

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Floyd

7 months ago

Definitely 67%, those tests miss some scenarios.

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Carman

8 months ago

Test 1 and 3 cover key decisions, but not all.

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Brittani

8 months ago

Wait, are we sure about the coverage?

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Alishia

8 months ago

That seems high, I’d guess 75%.

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Adelle

8 months ago

I think the decision coverage is 80%.

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Wayne

9 months ago

I recall that each decision needs to be tested at least once for full coverage. I’m leaning towards 80% since it seems like we hit most of the key decisions with those tests.

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Shakira

9 months ago

I'm a bit confused about how being a gold card holder affects the decision points. Did we cover how many decisions are actually made in this situation?

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Erinn

9 months ago

I think we practiced a similar question where we had to determine coverage based on different test cases. I feel like 75% might be the right answer here.

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Alline

9 months ago

I remember we talked about decision coverage in class, but I'm not entirely sure how to calculate it for this scenario.

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Stephania

9 months ago

This is a tricky one, but I think I can handle it. I'll need to really focus on understanding the control flow and how the different test cases exercise the various decision points. Hopefully, I can work through this systematically and arrive at the correct answer.

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Patrick

9 months ago

Okay, I think I've got this. The key is to identify the decision points in the control flow graph and then determine which ones are covered by the three test cases. I'll make sure to carefully consider each test case and how it exercises the different paths through the graph.

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Alton

9 months ago

Hmm, I'm a bit unsure about how to approach this. The control flow graph has a few different decision points, and I'll need to make sure I understand how they relate to the test cases. I may need to sketch this out on paper to visualize it better.

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Tora

9 months ago

This looks like a straightforward decision coverage question. I'll need to carefully trace the control flow graph and determine how many decisions are covered by the three test cases.

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Nikita

1 year ago

This question is a real turbulence, but I'm confident the answer is C) 75%. After all, I've got a frequent flyer card, and I'm always ready to get bumped for a free upgrade!

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Tonette

1 year ago

Ah, the joys of air travel! Bumped from a flight - that's a classic. As for the question, I'm going with D) 80%. Why? Because that's the number of flights I've been bumped from in the last year. Just kidding, I think the answer is C) 75%.

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Quentin

1 year ago

I'm leaning towards A) 60% as the level of decision coverage achieved.

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Arleen

1 year ago

Well, I believe it's D) 80% based on the information provided.

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Garry

1 year ago

I'm not so sure, I think it might be B) 67%.

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Rikki

1 year ago

I agree with you, I also think the answer is C) 75%.

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Markus

1 year ago

Hold on, I'm just trying to wrap my head around this control flow graph. It looks like a choose-your-own-adventure book from the 80s! Anyway, I think B) 67% is the right answer.

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Clorinda

1 year ago

Yeah, it seems like the three tests cover a good portion of the decision points.

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Pearlene

1 year ago

I think B) 67% makes sense based on the tests described.

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Yuriko

1 year ago

I agree, the control flow graph can be a bit confusing at first.

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Rasheeda

1 year ago

Hmm, I'm not so sure about that. The question says there are 3 tests, but it doesn't specify if they cover all the possible outcomes of the decisions. I'm leaning towards D) 80%.

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