Discuss ISTQB ISTQB-CTFL Exam Topic 6 Question 61

A software application incorrectly provided customers discounts of 50% off their total purchases if the purchases exceeded S100. It was discovered through an audit that the discount should have been only 5% off these purchases. A root cause analysis uncovered that the requirements Incorrectly stated 50% instead of 5% in this scenario.

Which of the following MOST accurately reflects this scenario?

AThe audit finding Is the root cause, the incorrect calculation of 50% Is the defect, and the Incorrect requirement Is the effect

BThe incorrect customer discount is the effect and the reason for the requirement error is the root cause

CThe incorrect discount is the root cause, requiring a root cause analysis which led to investigating the software code, design, and requirements

DA defect in the code is determined to be the root cause of the incorrect calculation

Suggested Answer: B

According to the ISTQB CTFL syllabus, a defect is a deviation from the expected result which in this scenario is the incorrect discount applied to the customers. The root cause, as per the ISTQB definition, is the originating cause of a defect, which in this case is the incorrect requirement stating 50% instead of 5%. Therefore, the incorrect requirement is the root cause and the customer receiving the wrong discount is the effect of this root cause. Reference: ISTQB Certified Tester Foundation Level Syllabus v4.0, Section 1.4.3 'Defects, Root Causes, and Effects'.

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18 comments · newest first

Beth 17 days ago

I still think D is the most straightforward answer.

Vivan 23 days ago

Yes, but A captures the whole scenario better.

Willard 28 days ago

So, we agree the requirement error started it all?

Beth 1 month ago

I see your point, but the code needs fixing first.

Vivan 1 month ago

True, but the audit shows the bigger picture.

Willard 1 month ago

But without the incorrect requirement, there wouldn't be a defect.

Beth 2 months ago

I lean towards D. The defect in the code is the main issue.

Vivan 2 months ago

I feel like A is more accurate. The audit finding is key.

Willard 2 months ago

This is tricky. I think B makes sense.

Casie 2 months ago

The audit just pointed out the problem, not the root cause itself.

Samira 2 months ago

Nah, I disagree, the defect is definitely the calculation, not the requirements.

Truman 2 months ago

Wait, how did they mix up 50% with 5%? That's wild!

Sylvia 3 months ago

I think B makes the most sense here.

Peggie 3 months ago

The requirements were wrong from the start, that's the real issue.

Craig 3 months ago

I’m confused about the terms here. I thought the effect was what we see happening, so maybe C makes sense since it talks about the investigation leading to the root cause?

Ahmed 3 months ago

I practiced a question similar to this where the defect was misidentified. I think D could be misleading since it focuses too much on the code itself.

Jacqueline 3 months ago

I'm not entirely sure, but I feel like the incorrect requirement is definitely a key part of this. Maybe A is closer to the truth?

Joni 4 months ago

I remember we discussed how the root cause should be the underlying issue, not just the symptoms. I think B might be the right choice.

ISTQB-CTFL Exam - Topic 6 Question 61 Discussion