ISTQB Updated ISTQB-CTAL-TA Exam Questions and Answers by baxter

The best black-box test technique to test the processing functionality of this system is equivalence partitioning enhanced with boundary value analysis. Equivalence partitioning is a technique that divides the input domain into subdomains that are expected to behave similarly. Boundary value analysis is a technique that tests the values at or near the boundaries of an input domain. These techniques are suitable for testing a system that depends on defined ranges of input variables, as they can ensure that all subdomains and boundary values are covered by test cases. Verified References: [ISTQB® Certified Tester Advanced Level Test Analyst CTAL-TA], Section 3.2.1, page 33 and Section 3.2.2, page 35.

Comprehensive and Detailed In-Depth Explanation:

Step 1: Identify Conditions and Rules:

Age (3 states): Below 18, Between 18-69, 70 or above

Alcohol consumption (2 states): ≤14 units, >14 units

Employment status (2 states): Employed, Unemployed

Smoking status (2 states): Smoker, Non-smoker

Step 2: Exclude Infeasible Combinations:

No insurance for age < 18 or age ≥ 70

Valid cases are those aged between 18-69.

Step 3: Calculate Valid Combinations:

Number of valid combinations (2 × 2 × 2 = 8)

Including 2 invalid age cases (under 18, over 70), the total is10test cases.

Therefore, the correct answer isB (10).

The test case C is an example of a test case required to achieve 1-switch coverage, using the state transition test technique. A 1-switch test case is a test case that covers two states and the transition between them. To achieve 100% 1-switch coverage, all transitions between states must be covered by at least one test case. The test case C covers the transition from the state 1st try to the state 2nd try, and the transition from the state 2nd try to the state eat card. Verified References: [ISTQB® Certified Tester Advanced Level Test Analyst CTAL-TA], Section 3.4.1, page 39.

Seven test cases are needed to achieve the minimum acceptable level of coverage for this use case. A use case is a technique that describes the interactions between a system and its actors to achieve a specific goal. A use case consists of a basic scenario and alternative scenarios that describe the normal and exceptional flows of events. The minimum acceptable level of coverage for a use case is achieved when at least one test case covers each scenario and each error condition. The scenarios and error conditions for this use case are:

Basic scenario: single-sided to single-sided

Alternatives: single-sided to double-sided, copy of a set, copy using the automatic document feeder

Errors: no paper in paper tray, paper jam, out of staples

The number of test cases is equal to the number of scenarios and error conditions, which is 7. Verified References: [ISTQB® Certified Tester Advanced Level Test Analyst CTAL-TA], Section 3.6.1, page 43.