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ISTQB CTFL-Foundation Exam - Topic 4 Question 45 Discussion

Actual exam question for ISTQB's CTFL-Foundation exam
Question #: 45
Topic #: 4
[All CTFL-Foundation Questions]

Which of the following defects is most likely to be found by a test harness?

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Suggested Answer: B

Variance from programming standards defects (option (A)) are found during the review or static testing process. Therefore a test harness is unlikely to find a defect in programming standards.

Memory leak defects (option (C)) could potentially be found by a test harness designed to run many test cases.

Regression defects (option (D)) could be found using many types of test tool.

Defects in middleware (option (B)) are generally more likely to be found by a test harness or a dynamic analysis tool than by any other type of tool.


by Derrick at Nov 20, 2025, 05:51 AM

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Galen
12 hours ago
Wait, can a test harness really catch middleware defects?
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Tammara
6 days ago
I think D) Regression defects is more common.
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Franklyn
11 days ago
Definitely C) Memory leaks. They’re tricky!
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Vanna
16 days ago
I'm going with C. Nothing like a good old-fashioned memory leak to keep a test harness on its toes.
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Mona
21 days ago
A test harness? More like a test circus, am I right? *wink wink*
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Louis
26 days ago
B? Really? A test harness is for finding technical issues, not middleware problems.
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Billy
1 month ago
I feel like middleware defects might be too complex for a test harness to catch, but I could be wrong.
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Shalon
1 month ago
I remember practicing a question similar to this, and I think regression defects are more about ensuring previous functionality works, so maybe that's not it.
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Stevie
1 month ago
I think a test harness would mainly catch issues like memory leaks, but I'm not entirely sure if it can detect all types of defects.
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Vanda
2 months ago
Hmm, I'm a little unsure here. I know a test harness is for automated testing, but I'm not totally clear on the specific types of defects it's best suited to identify. I may need to revisit my understanding of test harnesses before answering this.
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Leah
2 months ago
I'm feeling pretty confident about this one. A test harness is great for catching things like memory leaks or regression issues that can be reliably reproduced and tested. The other options don't seem as well-suited for that kind of automated testing.
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Glory
2 months ago
Okay, let's think this through. A test harness is all about running automated tests, so I'd say memory leaks or regression defects are the most likely to be caught, since those can be systematically checked.
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Chara
2 months ago
D is the way to go. Regression defects are the bread and butter of a good test harness.
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Clarinda
2 months ago
I think C is the correct answer. A test harness is great for catching memory leaks.
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Regenia
2 months ago
I think C) Memory leaks is the right choice. Test harnesses can catch those easily.
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Carmelina
3 months ago
I lean towards memory leaks being the right answer since test harnesses are designed to monitor resource usage, but I need to double-check my notes.
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Mary
3 months ago
A) Variance from programming standards is often overlooked.
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Vincenza
3 months ago
Hmm, this is a tricky one. I'm not totally sure about the capabilities of a test harness. I might need to review my notes on different testing approaches to make an informed guess.
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Kaycee
3 months ago
I think I'd start by considering the purpose of a test harness - it's designed to automate testing, so I'd focus on defects that are more easily detected through automated testing.
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