Discuss ISTQB ATTA Exam Topic 5 Question 128

Part 1 "Test Techniques various"

If we say that a set of tests has achieved 100% structural decision coverage on a particular module in a program, what does that mean? 1 credit [K2]

AThat all bugs present in that module were necessarily revealed by those tests.

BThat every control flow branch had been executed at least once by those tests.

CThat every dataflow in that module was exercised at least once by those tests.

DThat every path through that module was exercised at least once by those tests.

Suggested Answer: B

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21 comments · newest first

Temeka 2 days ago

True, but decision coverage focuses on branches, not paths.

Malcom 7 days ago

But what about option D? It sounds good too.

Gladys 12 days ago

Agreed, option B makes the most sense.

Temeka 17 days ago

I think it means every control flow branch was executed.

Cora 23 days ago

Good discussion, guys!

Marta 28 days ago

I see your point. B it is then!

Precious 1 month ago

Exactly, B is the best choice here.

Fletcher 1 month ago

Right, structural decision coverage focuses on branches.

Cora 1 month ago

True, but D is more about path coverage, not structural.

Marta 2 months ago

But what about D? Every path should be tested too.

Precious 2 months ago

Agreed, B makes sense. It covers all branches.

Fletcher 2 months ago

I think it's B. Every control flow branch must be executed.

Quentin 2 months ago

But can we really trust 100% coverage? Seems too good to be true.

Linn 2 months ago

Totally agree with B! It's all about the branches.

Brandee 2 months ago

Surprised that people confuse coverage with bug detection!

Jade 3 months ago

I thought it was A at first, but that doesn't really make sense.

Sabrina 3 months ago

B is the correct answer! Every control flow branch executed.

Yuonne 3 months ago

I’m confused about the difference between decision coverage and dataflow coverage. I feel like I might mix up B and C.

Leila 3 months ago

I practiced a similar question where we discussed paths and branches, and I think decision coverage is about branches, so B makes sense to me.

Lenna 3 months ago

I’m not entirely sure, but I remember something about decision coverage not guaranteeing all bugs are found, so A seems wrong.

Teri 4 months ago

I think structural decision coverage means that every control flow branch was executed, so I’m leaning towards option B.

ISTQB ATTA Exam - Topic 5 Question 128 Discussion