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ISTQB-CTFL Exam - Topic 5 Question 44 Discussion

Which of the following statements about error guessing is true?
D) Experienced testers, when applying error guessing technique, can anticipate where errors, defects and failures have occurred and target their tests at those issues
A) Error guessing is a system that adopts artificial intelligence to predict whether software components are likely to contain defects or not
B) Experienced testers, when applying error guessing, rely on the use of a high-level list of what needs to be tested as a guide to find defects
C) Error guessing refers to the ability of a system or component to continue normal operation despite the presence of erroneous inputs

ISTQB-CTFL Exam - Topic 5 Question 44 Discussion

Actual exam question for ISTQB's ISTQB-CTFL exam
Question #: 44
Topic #: 5
[All ISTQB-CTFL Questions]

Which of the following statements about error guessing is true?

Show Suggested Answer Hide Answer
Suggested Answer: D

This answer is correct because error guessing is a test design technique where the experience and intuition of the tester are used to anticipate where errors, defects and failures have occurred or are likely to occur, and to design test cases to expose them. Error guessing can be based on factors such as the complexity of the system or component, the known or suspected weaknesses of the system or component, the previous history of defects, or the common types of errors in the domain or technology. Error guessing can be used as a complementary technique to other more systematic or formal techniques, or when there is insufficient information or time to apply them. Reference: ISTQB Glossary of Testing Terms v4.0, ISTQB Foundation Level Syllabus v4.0, Section 2.3.2.5


by Pansy at Apr 29, 2025, 07:18 PM

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Nana
7 months ago
I’m surprised people think error guessing is just about guessing. It’s more strategic, right?
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Kati
7 months ago
Wait, is A really about AI? That seems off.
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Joaquin
7 months ago
B sounds pretty accurate too, but not as strong as D.
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Thersa
7 months ago
I think D is the right one. It makes sense!
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Jamika
7 months ago
C is definitely not correct. That's not what error guessing is about.
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Olene
8 months ago
I practiced a similar question, and I think D makes the most sense since it emphasizes the testers' ability to anticipate issues.
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Malcolm
8 months ago
I feel like C is definitely not right because it sounds more like fault tolerance than error guessing.
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Erick
8 months ago
I remember something about testers using their knowledge to find defects, but I’m not sure if it’s just a high-level list or more targeted.
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Solange
8 months ago
I think error guessing is more about using intuition and experience rather than AI, so I’m leaning towards D.
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Phuong
9 months ago
I remember learning about error guessing in class. I think I know the right answer, but I'll double-check the details just to be sure.
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Marya
9 months ago
The key here is that error guessing is a testing technique, not an AI system. I'll make sure to read the options closely.
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Salena
9 months ago
Okay, let me break this down - error guessing is about anticipating where defects might occur, not about the system's ability to handle errors. I think I've got it now.
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Luis
9 months ago
Hmm, I'm a bit unsure about the difference between error guessing and error handling. I'll need to think this through carefully.
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Lavonna
9 months ago
This question seems straightforward, I'm pretty confident I can identify the correct answer.
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Bev
1 year ago
Yeah, D makes sense too, testers can target their tests at potential issues.
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Micah
1 year ago
Haha, error guessing? Sounds like my attempt at debugging the other day. Jokes aside, D is the way to go here.
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Hannah
12 months ago
Haha, yeah, error guessing can sometimes feel like a shot in the dark, but D does seem like the most effective approach.
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Dulce
1 year ago
I think so too, experienced testers can really pinpoint where the issues are with error guessing.
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Arminda
1 year ago
I agree, D is definitely the best option when it comes to error guessing.
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Billy
1 year ago
I'm not sure, but I think D could also be a valid option.
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Dawne
1 year ago
I agree with Bev, experienced testers use error guessing as a guide.
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Bev
1 year ago
I think the answer is B.
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Venita
1 year ago
Option A sounds a bit like machine learning, but that's not what error guessing is about. I'd go with D - it best captures the essence of this testing technique.
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Roselle
1 year ago
I see your point, but I still think option D is the best fit for what error guessing is all about.
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Phil
1 year ago
I think option B is also a good choice, as experienced testers do rely on a high-level list when using error guessing.
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Johnna
1 year ago
I agree, option D seems to be the most accurate description of error guessing.
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Jettie
1 year ago
I agree with Vanna. Error guessing is all about leveraging tester experience to identify potential problem areas and tailor the testing approach to find those issues.
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Sharan
1 year ago
D) Experienced testers, when applying error guessing technique, can anticipate where errors, defects and failures have occurred and target their tests at those issues
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Galen
1 year ago
B) Experienced testers, when applying error guessing, rely on the use of a high-level list of what needs to be tested as a guide to find defects
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Ivette
1 year ago
A) Error guessing is a system that adopts artificial intelligence to predict whether software components are likely to contain defects or not
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Vanna
1 year ago
Option D seems to be the correct answer here. Experienced testers use their knowledge and intuition to anticipate where errors might occur and focus their testing efforts accordingly.
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Rosendo
1 year ago
It's important for testers to be able to anticipate where defects might occur in order to focus their testing efforts effectively.
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Margery
1 year ago
Yes, error guessing is all about using your intuition and knowledge to target testing where errors are likely to be found.
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Argelia
1 year ago
I agree, option D is the correct answer. Experienced testers can anticipate where errors might occur.
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