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ISTQB Exam ISTQB-CTFL Topic 5 Question 35 Discussion

Actual exam question for ISTQB's ISTQB-CTFL exam
Question #: 35
Topic #: 5
[All ISTQB-CTFL Questions]

A financial institution is to implement a system that calculates the interest rates paid on investment accounts based on the sum invested.

You are responsible for testing the system and decide to use equivalence partitioning and boundary value analysis to design test cases. The requirements describe the following expectations:

Investment range | Interest rate

R500 to RIO 000 10%

RIO 001 to R50 000 11%

R50 001 to RlOOOOO 12%

RIOOOOl to R500 000 | 13%

What is the minimum number of test cases required to cover all valid equivalence partitions for calculating the interest?

Show Suggested Answer Hide Answer
Suggested Answer: B

Using equivalence partitioning, the investment ranges are divided into four partitions:

R500 to R10,000 (10%)

R10,001 to R50,000 (11%)

R50,001 to R100,000 (12%)

R100,001 to R500,000 (13%)

Thus, the minimum number of test cases required to cover all valid equivalence partitions for calculating the interest is 4.


by Quentin at Oct 21, 2024, 04:47 PM

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Lynette
24 days ago
Haha, a million dollars? Sign me up! I'll take the 13% interest rate and retire early. Wait, did I just say the quiet part out loud?
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Bronwyn
7 days ago
User 1: That 13% interest rate for investments over R100,000 sounds pretty tempting.
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Jeff
26 days ago
I'm feeling a bit too mathematical for my taste. Let's spice things up a bit! What if we test the system with a million dollars? That would be one way to live the high life, am I right?
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Brianne
11 days ago
That would definitely be living the high life! But let's stick to testing with the specified ranges for now.
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Quiana
2 months ago
Hold up, what about the edge cases? We should also test the minimum and maximum values for each range to ensure the system handles them correctly. That's an additional 8 test cases. So the total should be 12.
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Rocco
2 months ago
Alright, let's see. We have four different investment ranges, each with a different interest rate. To cover all valid equivalence partitions, we need to test the boundaries between each range. That's 4 test cases. Easy peasy!
upvoted 0 times
Donte
1 months ago
So, the minimum number of test cases required is 4.
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Cassie
1 months ago
That's right, each test case will cover the boundaries between the different investment ranges.
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Micheal
2 months ago
We only need 4 test cases to cover all valid equivalence partitions.
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Adolph
2 months ago
I agree with Sherell. We only need to test the boundaries of each partition to cover all valid cases.
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Sherell
2 months ago
I think the answer is A) 5.
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