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For a mandatory input field 'ZIP code' the following rules are given: 1 - The valid ZIP code format is 5 numeric digits 2 - The code has to exist in the pest office's official ZIP code list Using equivalence classes partitioning, how many test cases are required to test this field?
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Question 332 - CTFL-2018 discussion

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Which of the following statements BEST describes how test cases are derived from a use case?

A.
Test cases are derived based on non-functional requirements such as usability
Answers
A.
Test cases are derived based on non-functional requirements such as usability
B.
Test cases are designed to cover various user behaviors, including basic, exceptional or alternative and error behaviors associated with human users or systems
Answers
B.
Test cases are designed to cover various user behaviors, including basic, exceptional or alternative and error behaviors associated with human users or systems
C.
Test cases are created using white-box test techniques to execute scenarios of use cases
Answers
C.
Test cases are created using white-box test techniques to execute scenarios of use cases
D.
Test cases are derived based on pair testing between a user and a tester to find defects
Answers
D.
Test cases are derived based on pair testing between a user and a tester to find defects
Suggested answer: B

Explanation:

It describes how test cases are derived from a use case.A use case is a description of a set of sequences of actions, including variants, that a system performs to yield an observable result of value to an actor1. An actor can be a human user or another system.Test cases are designed to cover various user behaviors, including basic, exceptional or alternative and error behaviors associated with each use case1.Option A is incorrect, as test cases derived from a use case are not based on non-functional requirements such as usability, but on functional requirements that describe what the system does1.Option C is incorrect, as test cases derived from a use case are not created using white-box test techniques, but using black-box test techniques that focus on the inputs and outputs of the system1.Option D is incorrect, as test cases derived from a use case are not based on pair testing, which is a technique that involves two testers working together to find defects1.

Reference:1, Section 4.2.4

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asked 18/09/2024
ADAMA DAO
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