ISTQB Exam ISTQB-CTFL Topic 5 Question 35 Discussion

Actual exam question for ISTQB's ISTQB-CTFL exam

Question #: 35
Topic #: 5

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?

D16

Show Suggested 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, 05:47 PM

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Clorinda

3 days ago

Hmm, this looks like a straightforward question on equivalence partitioning and boundary value analysis. I'll need to carefully identify the valid partitions based on the investment ranges and interest rates provided.

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Lynette

11 months 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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Edgar

9 months ago

User 4: Looks like we all have our eyes on that top tier interest rate!

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Lorean

9 months ago

User 3: I would definitely invest a million dollars for that 13% interest rate.

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Rosendo

10 months ago

User 2: I know right! Who wouldn't want to retire early with that kind of return?

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Bronwyn

10 months ago

User 1: That 13% interest rate for investments over R100,000 sounds pretty tempting.

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Jeff

11 months 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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Deandrea

10 months ago

Let's save the million-dollar tests for when the system is fully functional within the specified ranges.

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Josephine

10 months ago

Testing with a million dollars would be fun, but we need to make sure the system can handle all valid equivalence partitions.

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Daniela

10 months ago

I agree, let's focus on testing within the defined boundaries to ensure the system works correctly.

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Brianne

10 months 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

12 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

12 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!

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