iSQI CTFL_Syll2018 Exam - Topic 2 Question 114 Discussion

Actual exam question for iSQI's CTFL_Syll2018 exam

Question #: 114
Topic #: 2

[All CTFL_Syll2018 Questions]

An iPhone application identifies and counts all purchases of a particular product from a shopping website. The application incorrectly counts purchase attempts by including both failed attempts, and also those where the purchase was terminated by the user before completion. Testing has identified that the problem was located in the 'purchase identification' module, where the first stage in the purchasing process was counted, rather than a successful confirmed purchase.

Which of the following statements correctly identifies what has happened? [K2]

AThe application failed because of a defect in the purchase identification module caused by a programmer mistake or an error in the specification.

BAn error by the programmer led to a mistake in the purchase identification module and this caused a defect in the application

CA defect in the purchase identification module caused by a mistake in the module specification led to a defect in the overall application

DA bug in the purchase identification module caused a fault in the application

Show Suggested Answer

Suggested Answer: A

The application failed because of a defect in the purchase identification module caused by a programmer mistake or an error in the specification. A defect is a flaw or imperfection in a software product that causes it to fail to meet its requirements or expectations. A failure is an event or behavior of a software product that deviates from its requirements or expectations. An error is a human action or decision that produces a defect. A mistake is an incorrect action or decision that leads to an error. In this case, the application failed because it incorrectly counted purchase attempts, which was a defect in the purchase identification module. The defect was caused by either a programmer mistake (such as writing wrong code) or an error in the specification (such as defining wrong requirements). A detailed explanation of defects, failures, errors, and mistakes can be found in [A Study Guide to the ISTQB Foundation Level 2018 Syllabus], pages 5-6.

by Nieves at Aug 05, 2025, 01:05 AM

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Jackie

2 months ago

Wait, so they counted failed attempts too? That's surprising!

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Erick

2 months ago

I disagree, it seems more like a specification issue.

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Jamal

3 months ago

I think it's definitely a bug in the module.

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Ernest

3 months ago

The defect is definitely in the purchase identification module.

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Dulce

3 months ago

Sounds like a classic programmer error.

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King

4 months ago

I practiced a similar question where the distinction between errors and defects was crucial. I think option B might be the right choice since it clearly links the programmer's error to the defect.

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Dusti

4 months ago

I’m a bit confused about the terminology. Is a "bug" the same as a "defect"? I feel like option D might be too vague.

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Anglea

4 months ago

I think option C sounds familiar because it mentions a defect in the module specification leading to an overall application defect. It seems to fit the scenario.

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Beatriz

4 months ago

I remember we discussed how defects can arise from both programmer mistakes and specification errors. I'm not sure which statement captures that best though.

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Clarence

5 months ago

This question is a bit confusing. There are a few different potential causes mentioned, and I'm not sure which one is the correct answer. I'll have to re-read the details and think through the options again to make sure I understand what's going on.

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Vinnie

5 months ago

Okay, I think I've got this. Based on the information provided, it seems like the issue is caused by a defect in the purchase identification module, which is incorrectly counting both failed attempts and terminated purchases as successful. I'll go with option C as the best answer.

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Amalia

5 months ago

Hmm, this is a tricky one. The question mentions a problem in the "purchase identification" module, but I'm not sure if the issue is due to a programmer mistake, a specification error, or something else. I'll have to weigh the options carefully.

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Crissy

5 months ago

This seems like a straightforward question about identifying the root cause of a software defect. I'll need to carefully read the details and think through the possible statements to determine which one best describes the issue.

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Florinda

5 months ago

That makes sense. So, the correct statement would be C) A defect in the purchase identification module caused by a mistake in the module specification led to a defect in the overall application.

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Jettie

5 months ago

Yes, I believe so. The first stage of the purchasing process was counted instead of a successful purchase.

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Shaniqua

6 months ago

So, do you think it was caused by a defect in the module specification?

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Eric

6 months ago

Ah, this is a tricky one. The application is clearly counting more purchases than it should, and the issue seems to be in the purchase identification module. I'm leaning towards option C - the module specification must have had a mistake that led to the defect.

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