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ISTQB-CTFL Exam - Topic 4 Question 59 Discussion

The following rules determine the annual bonus to be paid to a salesman of a company based on the total annual amount of the sales made (referred to as TAS).If the TAS is between 50k and 80k, the bonus is 10%. If the TAS exceeds 80k by a value not greater than 40k, the bonus is 15%. Finally, if the TASexceeds the maximum threshold which entitles to a 15% bonus, the bonus is 22%.Consider applying equivalence partitioning to the TAS (Note: 1k = 1000 euros).Which one of the following answers contain only test cases that belong to the same equivalence partition?
A) TC1 = 81 k; TC2= 97k; TC3=111k; TC4=118k
B) TC1 = 40k; TC2= 46k; TC3=51k; TC4=53k
C) TC1 = 79k; TC2= 80k; TC3=81k; TC4=82k
D) TC1 = 90k; TC2= 110k; TC3=125k: TC4=140k

ISTQB-CTFL Exam - Topic 4 Question 59 Discussion

Actual exam question for ISTQB's ISTQB-CTFL exam
Question #: 59
Topic #: 4
[All ISTQB-CTFL Questions]

The following rules determine the annual bonus to be paid to a salesman of a company based on the total annual amount of the sales made (referred to as TAS).

If the TAS is between 50k and 80k, the bonus is 10%. If the TAS exceeds 80k by a value not greater than 40k, the bonus is 15%. Finally, if the TAS

exceeds the maximum threshold which entitles to a 15% bonus, the bonus is 22%.

Consider applying equivalence partitioning to the TAS (Note: 1k = 1000 euros).

Which one of the following answers contain only test cases that belong to the same equivalence partition?

Show Suggested Answer Hide Answer
Suggested Answer: A

This answer is correct because equivalence partitioning is a test design technique that divides the input domain of a system or component into partitions of equivalent data, such that each partition is expected to produce the same output or behavior. Equivalence partitioning aims to reduce the number of test cases by selecting one representative value from each partition. In this case, the input domain of the TAS can be divided into four partitions based on the bonus rules: less than 50k, between 50k and 80k, between 80k and 120k, and more than 120k. The test cases in the answer belong to the same partition, which is between 80k and 120k, and they are expected to produce the same output, which is a bonus of 15%.Reference: ISTQB Glossary of Testing Terms v4.0, ISTQB Foundation Level Syllabus v4.0, Section 2.3.2.1


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Samira
2 hours ago
Option C has all values between 50k and 80k.
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Julianna
5 days ago
I agree with Eleni, but I also wonder if option B could be a trick since it includes values below 50k.
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Aliza
10 days ago
I keep getting confused between the ranges. I thought option A had values that were too spread out to be in the same partition.
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Zana
16 days ago
I'm not so sure about that. I remember practicing with similar questions, and I feel like option D might also be a valid partition.
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Eleni
2 months ago
I think option C is the right choice since all the TAS values are around the 80k threshold.
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