iSQI CTFL_Syll2018 Exam - Topic 1 Question 120 Discussion

Actual exam question for iSQI's CTFL_Syll2018 exam

Question #: 120
Topic #: 1

[All CTFL_Syll2018 Questions]

An airline's frequent flyer's club awards benefits depending on which tier a customer is in. The software must determine which tier to allocate a customer to based on an input value of total Credits Earned to date

Customers initially join the Silver Tier and remain in that tier for the first 400 Credits Earned The next 400 Credits Earned moves the customer into the Gold Tier. The next 600 Credits Earned moves the customer into the Platinum Tier Further Credits Earned moves the customer into the Concierge Tier.

Test Cases have been written with the following total Credits Earned input values:

TC1 -400 Credits

TC2 - 500 Credits

TC3 - 800 Credits

TC4-1500 Credits

Applying the Equivalence Partitioning test design technique, what percentage of valid Equivalence Partitions have these 4 test cases collectively achieved?

B50%.

C75%.

D100%

A25%

Show Suggested Answer

Suggested Answer: D

Equivalence Partitioning is a black-box test design technique that divides input data of a software module into partitions of equivalent data from which test cases can be derived. In this context, the valid equivalence partitions are:

Silver Tier: 0 to 400 Credits

Gold Tier: 401 to 800 Credits

Platinum Tier: 801 to 1400 Credits

Concierge Tier: 1401+ Credits

The test cases provided cover all these partitions:

TC1 covers the Silver Tier boundary at 400 Credits.

TC2 covers within the Gold Tier at 500 Credits.

TC3 covers the Gold Tier boundary at 800 Credits.

TC4 covers within the Concierge Tier at 1500 Credits.

Since all valid partitions are covered by the test cases, 100% of the valid Equivalence Partitions have been achieved.

by Hershel at Jan 23, 2026, 08:41 AM

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Lashandra

3 days ago

Haha, I bet the answer is going to be something like "100% of the valid equivalence partitions" or something equally obvious.

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Tequila

8 days ago

Wait, is this a trick question? I feel like there's a catch somewhere.

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Miles

14 days ago

Okay, so we have four test cases covering different credit ranges. Sounds like a good start.

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Kallie

19 days ago

Hmm, this looks like a tricky one. Let's see if I can crack it.

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Kristeen

24 days ago

I'm a bit confused about how to express the percentage of valid partitions. Are we just counting the tiers that have been tested?

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Stevie

29 days ago

If I recall correctly, the Silver Tier is from 0 to 400, Gold from 401 to 800, Platinum from 801 to 1400, and Concierge above that. So, we should have four valid partitions.

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Shizue

2 months ago

I think we might have covered a similar question in class where we had to determine the boundaries for each tier. That could help here.

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Sunny

2 months ago

I remember we discussed how to identify the tiers based on Credits Earned, but I'm not sure how to calculate the valid partitions.

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Candra

2 months ago

I'm a bit confused by the "Equivalence Partitioning" part. I'll need to review my notes on that testing technique before attempting this.

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Kenda

2 months ago

This seems pretty simple. The test cases cover the main credit thresholds, so I should be able to figure out the percentage of valid partitions covered.

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