CTAL-TA ISTQB Certified Tester Advanced Level Test Analyst (CTAL-TA) v4.0 Practice Questions
Prepare for CTAL-TA with more than an answer.
- Exam fee
- $299 USD
- Level
- Advanced
- Valid for
- lifetime
Domains covered on the exam 5
- The Tasks of the Test Analyst in the Test Process20%
- The Tasks of the Test Analyst in Risk-Based Testing15%
- Test Analysis and Test Design40%
- Test Quality Characteristics15%
- Software Defect Prevention10%
- 1
A Test Analyst is using a checklist to support experience-based testing of a web application's login form. The specification is minimal, but the analyst has experience with common vulnerabilities in such forms.
Which of the following items would be most appropriate to include in a 'do-confirm' checklist for this purpose?
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Correct answer: B
A 'do-confirm' checklist guides the thought process and provides ideas for exploration, rather than prescribing exact inputs. This option asks the tester to verify a quality attribute (resilience against SQL injection), prompting them to use their expertise to generate various specific attack strings. This is characteristic of a 'do-confirm' checklist, which is designed for experienced professionals.
- 2
Which of the following BEST describes the difference between a high-level test case and a low-level test case?
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Correct answer: C
A high-level (or logical) test case describes what is being tested in abstract terms (e.g., 'Verify successful login with valid credentials'). A low-level (or concrete) test case provides the specific, concrete details needed for execution, including exact input data (e.g., username: 'testuser1', password: 'Password123') and the precise expected outcome.
- 3
A Test Analyst is evaluating the results of a test cycle to improve future defect detection. The analyst calculates the Defect Detection Percentage (DDP) for system testing and finds it to be very low, at 35%. This indicates that 65% of defects that could have been found in system testing escaped to the next phase (acceptance testing) or production.
Based on this analysis, what is the most logical improvement for the Test Analyst to propose?
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Correct answer: C
A low Defect Detection Percentage (DDP) for a specific test level indicates that its defect detection is ineffective. The correct response is to analyze why defects are being missed and propose measures to improve that test level. Making system testing more focused (e.g., on high-risk areas) and rigorous (e.g., using stronger techniques or higher coverage criteria) directly addresses the problem of low DDP.
- 4
When testing a new mobile banking app, the Test Analyst's primary focus is on ensuring that all specified financial transactions can be completed accurately and that the app behaves as documented in the user stories.
Which sub-characteristic of functional suitability is being primarily addressed?
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Correct answer: C
Functional correctness is the degree to which a product or system provides the correct results with the needed degree of precision. Testing for the accuracy of financial transactions and verifying behavior against documentation are direct assessments of functional correctness.
- 5
A Test Analyst is contributing to a risk identification workshop for a new e-commerce platform. The analyst has extensive experience with similar platforms.
Which of the following contributions is the most valuable one a Test Analyst can make during this risk analysis activity?
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Correct answer: C
A Test Analyst's experience and intuitive knowledge of what typically goes wrong in a system are invaluable during risk identification. By contributing this expertise, they help the team identify product risks that might otherwise be overlooked, making the risk analysis more comprehensive and effective.
- 6
True or False: The primary goal of random testing is to achieve 100% structural code coverage by generating a large volume of test inputs.
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Correct answer: B
This statement is false. Random testing does not have recognized coverage criteria and does not guarantee any specific level of structural coverage. Its value lies in providing insights into reliability, avoiding tester bias, and testing with a large volume of data, especially when domain knowledge is limited. It is not designed to systematically achieve structural coverage.
- 7
Case Study: HealthSys Patient Portal
A healthcare provider, HealthSys, is developing a new patient portal. This web application will allow patients to view their medical records, schedule appointments, and communicate with their doctors. The project is safety-critical, as incorrect data display could lead to severe health consequences. The project follows a V-model development lifecycle.
You are the Test Analyst responsible for User Acceptance Testing (UAT). The primary stakeholders (a group of doctors and patient representatives) have provided a set of user requirements. One key requirement is: 'The portal must be intuitive and easy to use for patients, especially those who are elderly or not tech-savvy, to prevent errors in appointment booking or misinterpretation of medical data.' This requirement has been identified as a high-risk area.
During the test analysis phase for UAT, you need to propose a testing approach that directly addresses this high-risk requirement. The project has a budget for involving real end-users in the testing process. The goal is to get qualitative feedback on the user-friendliness of the portal and identify potential areas of confusion or difficulty.
Which testing activity is the MOST appropriate for the Test Analyst to plan and contribute to in order to mitigate the specified risk?
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Correct answer: C
The high-risk requirement is explicitly about usability ('intuitive and easy to use'). Usability test sessions are the most direct and effective way to evaluate this. By observing real users as they interact with the system to complete defined tasks, the Test Analyst can gather direct feedback on effectiveness, efficiency, and satisfaction, thereby identifying specific usability problems that need to be addressed to mitigate the risk.
- 8
A public transportation authority is developing a new mobile app for journey planning. During a requirements review, a Test Analyst models the ticket purchasing process using a state transition diagram to identify potential defects in the specification. The analyst discovers that after a payment failure, there is no defined transition back to the 'Payment Method Selection' state, leaving the user in a 'Payment Failed' dead-end state.
Which defect prevention activity does this discovery best represent?
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Correct answer: C
By creating a state transition model from the textual requirements, the Test Analyst is performing an activity to support phase containment. This modeling effort helps to formalize and visualize the system's behavior, which reveals ambiguities, incompleteness (like the missing transition), and inconsistencies in the specification before they are built into the code. This prevents defects from escaping the requirements phase into later development phases.
- 9
A Test Analyst is applying domain testing to a feature that calculates shipping costs. The cost calculation depends on two interacting variables: package weight (W) in kg and destination zone (Z) as an integer. The rule for a specific shipping class is:
(W > 2 AND W <= 10) AND (Z = 3 OR Z = 5).To achieve reliable domain coverage for this equivalence partition, which set of points represents the minimum required test values?
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Correct answer: B
Reliable domain coverage requires testing IN, OUT, ON, and OFF points for each border of the equivalence partition. The expression defines a partition with four borders: W > 2 (open), W <= 10 (closed), Z = 3 (equality), and Z = 5 (equality). While optimization is possible, the fundamental requirement is to test the four types of points (IN, OUT, ON, OFF) relative to each border to robustly check for implementation errors like incorrect relational operators or boundary values.
- 10
You are testing a system for a video streaming service. The system must be configured for different user subscription plans, and you need to ensure all key feature combinations work correctly. The parameters are:
- Subscription Tier: Basic, Standard, Premium (3 values)
- Video Quality: SD, HD, 4K (3 values)
- Concurrent Streams: 1, 2, 4 (3 values)
- Offline Downloads: Enabled, Disabled (2 values)
What is the minimum number of test cases required to achieve 100% pairwise (2-wise) coverage?
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Correct answer: C
Pairwise (or all-pairs) testing aims to cover every possible pair of parameter values at least once. For a system with three parameters having 3 values each and one parameter with 2 values, the total number of combinations is 3 * 3 * 3 * 2 = 54. However, using a pairwise algorithm, the number of required tests is significantly smaller. The number of tests is typically dominated by the product of the two largest sets of values, which is 3 * 3 = 9. A covering array can be constructed to show that all pairs can be covered in 9 test cases.
