ISTQB Exam ISTQB-Agile-Public Topic 1 Question 14 Discussion

Actual exam question for ISTQB's ISTQB-Agile-Public exam

Question #: 14
Topic #: 1

Consider an online application that allows registered users to pay the annual car tax based on the vehicle's engine power in kW. Given the following user story:

''As a customer I need the online application to calculate the annual car tax amount that I need to pay for my car":

- If the power of the vehicle is less than 20 kW, then the annual car tax is free

- If the power of the vehicle is more or equal than 20 kW but less or equal than 150 kW, then the annual car tax is 250 Euros

- If the power of the vehicle is more than 150 kW, then the annual car tax is 750 Euros"

What is the MOST suitable use of a black-box test design technique for this user story?

SELECT ONE OPTION

AState transition testing. Test the transitions between the following states: logging In. inserting the power of the vehicle, making payment, logging out

BUse case testing.
Test the following use case (Actor=registered user):
Pre-condition=registered user logged in
Scenario=registered user inserts the power of the vehicle, making payment and logs out
Post-condition=car tax paid and registered user logged out

CDecision table testing. Test the following conditions:
Condltions=reglstered user logged In; inserted power of the vehlcle=20kW;
Action=Car tax paid

DEquivalence partitioning. Test the annual car tax value for the following partitions: [power of the vehicle<20 kW; 20 kW ?power of the vehicle?! 50 kW; power of the vehicle>150 kW]

Show Suggested Answer

Suggested Answer: C

by Karl at Jun 23, 2024, 12:05 AM

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Paulina

8 months ago

I just hope the online application has a user-friendly interface. Imagine having to input the power of your car in kilowatts - that could get confusing for some people!

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Lorean

8 months ago

Haha, I wonder if there's a special 'Lamborghini tax' for cars with over 1000 kW of power. That would really put a dent in your wallet!

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Adelle

8 months ago

I agree with Willodean. Equivalence Partitioning seems like the best option here, as it covers the different scenarios in a straightforward way.

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Stacey

7 months ago

D) Equivalence partitioning. Test the annual car tax value for the following partitions: [power of the vehicle<20 kW; 20 kW ?power of the vehicle?! 50 kW; power of the vehicle>150 kW]

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Kristian

7 months ago

C) Decision table testing. Test the following conditions: Conditions=registered user logged In; inserted power of the vehicle=20kW; Action=Car tax paid

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Chantell

7 months ago

B) Use case testing. Test the following use case (Actor=registered user): Pre-condition=registered user logged in Scenario=registered user inserts the power of the vehicle, making payment and logs out Post-condition=car tax paid and registered user logged out

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Amber

8 months ago

A) State transition testing. Test the transitions between the following states: logging In. inserting the power of the vehicle, making payment, logging out

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Margurite

8 months ago

I see your point, Gerald. Decision table testing could provide a clear structure to test the different conditions in the user story.

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Gerald

8 months ago

I think Decision table testing could also be a good option to test the conditions and actions for the user story.

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Julie

8 months ago

Decision table testing sounds good too. It would help us cover the different conditions and ensure the correct actions are taken for each case.

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Willodean

8 months ago

I think the most suitable test design technique would be Equivalence Partitioning. It allows us to test the different ranges of vehicle power and ensure the correct annual car tax is calculated for each one.

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Belen

6 months ago

D) Equivalence partitioning. Test the annual car tax value for the following partitions: [power of the vehicle<20 kW; 20 kW ?power of the vehicle?! 50 kW; power of the vehicle>150 kW]

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Francesco

7 months ago

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Eve

7 months ago

A) State transition testing. Test the transitions between the following states: logging In. inserting the power of the vehicle, making payment, logging out

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Kayleigh

7 months ago

D) Equivalence partitioning. Test the annual car tax value for the following partitions: [power of the vehicle<20 kW; 20 kW ?power of the vehicle?! 50 kW; power of the vehicle>150 kW]

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Willie

7 months ago

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Cherry

8 months ago

A) State transition testing. Test the transitions between the following states: logging In. inserting the power of the vehicle, making payment, logging out

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Sean

8 months ago

I agree with Ronnie. Equivalence partitioning seems like the best option to test the different partitions of power of the vehicle.

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Ronnie

8 months ago

I think the most suitable use of a black-box test design technique for this user story is Equivalence partitioning.

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