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ISTQB-CTFL Exam - Topic 4 Question 51 Discussion

Which ONE of the following options MOST ACCURATELY describes the activities of ''testing'' and ''debugging''?
A) Testing triggers a failure that is caused by a defect in the software, whereas debugging is concerned with finding the causes of this failure (defects), analyzing these causes, and eliminating them.
B) Testing triggers a failure that is caused by a defect in the software, whereas debugging is concerned with finding the causes of this failure (defects), analyzing these causes, and reproducing them.
C) Testing identifies a defect that is caused by an error in the software, whereas debugging is concerned with finding the causes of this defect, analyzing these causes, and eliminating them.
D) Testing triggers a defect that is caused by an error in the software, whereas debugging is concerned with finding the causes of this defect, analyzing these causes, and eliminating them.

ISTQB-CTFL Exam - Topic 4 Question 51 Discussion

Actual exam question for ISTQB's ISTQB-CTFL exam
Question #: 51
Topic #: 4
[All ISTQB-CTFL Questions]

Which ONE of the following options MOST ACCURATELY describes the activities of ''testing'' and ''debugging''?

Show Suggested Answer Hide Answer
Suggested Answer: A

Comprehensive and Detailed In-Depth Explanation:

Testing and debugging are separate but related activities. Testing executes the software to identify failures that result from defects (A). Debugging is the developer's responsibility and involves finding the cause of a failure (defect), analyzing it, and fixing the defect. The ISTQB syllabus explicitly differentiates these activities. Testing does not modify the software, whereas debugging does.


by Luisa at Nov 23, 2025, 10:00 AM

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Florinda
3 months ago
C is solid. It emphasizes analyzing causes effectively.
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Kristofer
3 months ago
D confuses defects with errors. That's not accurate at all.
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Ivan
3 months ago
B is misleading. Reproducing failures isn't the main goal of debugging.
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Kendra
3 months ago
A sounds right to me too. Testing leads to finding defects.
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Carin
4 months ago
I prefer C. It focuses on defects from errors, which makes sense.
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Gail
4 months ago
D) is misleading. Defects aren't triggered, they're identified.
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Chantell
4 months ago
A) sounds right, but I’m surprised it’s so clear-cut.
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Chaya
5 months ago
Wait, isn't testing just about finding bugs, not triggering failures?
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Beatriz
5 months ago
I disagree, I think C) makes more sense.
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Layla
5 months ago
Haha, D) sounds like a debugging nightmare - "Uh oh, I think I just created another bug while trying to fix this one!"
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Britt
5 months ago
B) Nah, that's not quite right. Debugging is about fixing the issues, not just reproducing them.
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Tracey
5 months ago
C) Definitely the most accurate description of the two activities.
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Martina
5 months ago
A) Sounds about right to me. Testing finds the bugs, debugging fixes them.
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Nadine
6 months ago
I practiced a similar question, and I feel like testing should identify defects rather than trigger them. Maybe option C is the one?
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Rebeca
6 months ago
I think option A sounds right because it mentions finding causes and eliminating them, which is what debugging does.
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Barrett
6 months ago
I remember that testing is about finding defects, but I'm not sure if it triggers a failure or just identifies it.
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Quentin
6 months ago
I feel pretty confident about this one. Testing is all about finding failures caused by defects, while debugging is the process of investigating those defects and eliminating them. Option A seems to capture that distinction the best.
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Mendy
6 months ago
This is a tricky one. I'm not 100% sure, but I think the key is recognizing that testing identifies defects, while debugging is about analyzing and fixing those defects. I'll make sure to review my notes on this topic before answering.
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Paris
6 months ago
Okay, I've read through the options a few times now. I think I'm leaning towards option A as the most accurate description, but I want to double-check my understanding before selecting an answer.
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Genevive
7 months ago
A) is the correct one. Testing finds failures, debugging fixes them.
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Shaquana
7 months ago
I think A is the best choice. It clearly explains the roles.
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Irving
7 months ago
I’m a bit confused about the difference between defects and errors in this context. I think I might lean towards option A, but I’m not entirely sure.
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Cristy
8 months ago
Hmm, I'm a bit confused by the wording here. I'll need to carefully read through each option and think about the key distinctions between testing and debugging.
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Katy
8 months ago
This question seems pretty straightforward. I think I've got a good handle on the difference between testing and debugging.
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Rebbecca
2 months ago
I’m leaning towards A. It makes the most sense to me.
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Linwood
3 months ago
So, which option do you think is the best?
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Tamie
3 months ago
I agree! Testing shows the problem, debugging fixes it.
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Luther
7 months ago
Yeah, but debugging is where the real work happens.
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Alethea
7 months ago
I always thought testing was just about finding bugs.
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