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Exam ISTQB-CTAL-TA Topic 1 Question 30 Discussion

Actual exam question for ISTQB's ISTQB-CTAL-TA exam
Question #: 30
Topic #: 1
When applying for health insurance from Health4You, applicants are categorized based on age, alcohol consumption, employment, and smoking status. How many test cases are required to give full coverage for the above rules when applying collapsed decision table testing to exclude infeasible combinations and irrelevant conditions?
SELECT ONE OPTION

Suggested Answer: B Vote an answer

Comprehensive and Detailed in Depth Explanation:
Decision Table Analysis:
* Age:Valid ranges (18-69), excludes those aged #70 or <18 (2 valid values).
* Alcohol Consumption:#14 units, >14 units (2 values).
* Smoking Status:Smoker, Non-smoker (2 values).
* Employment Status:Full-time, Not full-time (2 values).
After removinginfeasible combinations(like age <18 or #70), the possible combinations are reduced.
* 2 (age) x 2 (alcohol) x 2 (smoker) x 2 (employment) = 16possible combinations.
* However, some combinations are logicallycollapsedor omitted, as irrelevant conditions are not covered.
* After this collapsing, the total number ofnecessary test casesis8.
Therefore, the correct answer isB (8).

by Juliet at Feb 09, 2026, 03:14 PM

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