ISTQB-CTFL Exam - Topic 4 Question 55 Discussion

Actual exam question for ISTQB's ISTQB-CTFL exam

Question #: 55
Topic #: 4

Which of the following statements correctly describes error guessing?

AError guessing is a testing technique that uses the experience and knowledge of testers to create test cases that may reveal suspected defects.

BError guessing is a testing technique in which test cases are created to exercise the items in a checklist.

CError guessing is a testing technique in which the testers dynamically create test cases based on their knowledge, exploration of the test item and the results of previous tests.

DError guessing is a testing technique in which the tester creates test cases based on the analysis of the specified behavior of the test object without knowing its internal structure.

Show Suggested Answer

Suggested Answer: A

by Delbert at Mar 03, 2026, 11:59 AM

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Solange

15 days ago

D sounds a bit off to me.

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Robt

20 days ago

I think C describes it best.

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Eura

25 days ago

A is definitely correct!

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Yuki

1 month ago

I always thought it was just about checking off a list!

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Shaunna

1 month ago

Wait, so error guessing isn't just random guessing?

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Krissy

1 month ago

D sounds a bit off to me.

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Lelia

2 months ago

I think C describes it best.

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Marci

2 months ago

A is definitely correct!

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Haydee

2 months ago

I feel like D could be a contender too, since it talks about analyzing behavior without knowing the internal structure, but I still think A is the most straightforward.

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Sheron

2 months ago

I’m a bit confused. I thought error guessing was more about intuition rather than following a checklist, so I’m not sure about B.

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Peggy

2 months ago

I remember practicing a question similar to this, and I think C sounds right because it mentions dynamically creating test cases based on knowledge and previous results.

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Carin

2 months ago

I think error guessing is about using our experience to find defects, so I’m leaning towards A. But I’m not completely sure.

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