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| Section | Objectives |
|---|---|
| Topic 1: Testing Quality Characteristics | - Compatibility Testing - Functional Testing - Flexibility Testing - Usability Testing |
| Topic 2: Test Analysis and Test Design | - Experience-based Testing - Behavior-Based Test Techniques - Rule-Based Test Techniques - Data-Based Test Techniques |
| Topic 3: The Tasks of the Test Analyst in Risk-Based Testing | - Risk Control - Risk Analysis |
| Topic 4: The Tasks of the Test Analyst in the Test Process | - Tasks Related to Work Products - Testing in the Software Development Lifecycle - Involvement in Test Activities |
| Topic 5: Software Defect Prevention | - Defect Prevention Practices - Mitigating Recurrence of Defects - Supporting Phase Containment |
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問題 #27
You are working on an Agile project to develop a web-based online dating service that will allow members of the service to enter their profile, meet people who would be a good match for them, arrange social events with those people and to block people with whom they do not want contact.
The features for member profile entry have been delivered and tested. The current iteration will deliver profile matching. The regression tests for profile entry will be the acceptance criteria for its user stories. These tests have not been automated yet so you have decided to perform regression testing on the basis of a checklist.
Which checklist would be BEST in these circumstances?
答案：C
解題說明：
The correct answer is A . CTAL-TA v4.0 describes checklist-based testing as an experience-based technique in which checklist items guide the tester and help avoid missing important checks. It distinguishes checklist use from fully scripted testing, but the checklist must still be concrete enough to support the objective of the test session.
Here, the goal is regression testing for profile entry. The scenario says the regression tests for profile entry will be the acceptance criteria for its user stories , but those tests have not been automated yet. Since the team needs to manually perform regression testing now, the best checklist is a read-do checklist built from the acceptance tests of the user stories. A read-do checklist is appropriate when the tester should read each item and perform it as an action. That fits manual regression execution: run this acceptance test, check the result, then proceed to the next item.
Option B is weaker because acceptance criteria are statements of expected behavior, not necessarily executable test actions. Option C is less suitable because a do-confirm checklist is used when tasks are performed from memory or normal workflow and then checked afterward; regression testing needs active, item-by-item execution. Option D combines both weaknesses: acceptance criteria instead of acceptance tests, and do-confirm instead of read-do. Reference: CTAL-TA v4.0, Section 3.4.2 Checklists Supporting Experience-Based Test Techniques .
問題 #28
You are testing a program which should calculate the area of a trapezium and have decided to use metamorphic testing. The formula Area = (((a + b) / 2) * h) where a and b are the lengths of the two parallel sides, and h is the height when the parallel sides are horizontal.
Which ONE of the following would be an appropriate metamorphic relation?
答案：D
解題說明：
The correct answer is B , but the question is slightly under-specified as written. CTAL-TA v4.0 defines a metamorphic relation as a property that describes how a change in test input is reflected in the expected result.
It is used to create follow-up test cases from a source test case and then evaluate the source and follow-up results jointly.
For the trapezium formula, if b changes while a and h remain unchanged, the area must change, not the height. Therefore, options C and D are structurally wrong because changing an input side length does not imply a change in h . Option A is also weak because it mixes an absolute increase in b with a fixed percentage increase in area, without considering the original values of a , b , and h . Option B is the only option that correctly expresses the expected-result relationship: a percentage increase in b causes a predictable percentage increase in area . Strictly, the exact percentage depends on the contribution of b to a + b ; the shown 2/3 relation is valid when b / (a + b) = 2/3 . Reference: CTAL-TA v4.0, Section 3.3.2 Metamorphic Testing .
問題 #29
You are a TA in the development of a road traffic control application, which will be installed at busy road junctions, to control the operation of traffic signal lights according to sensors that detect traffic volume. This safety-critical project is still in the early stages of test planning and the project schedule is tight.
The Test Manager has asked you if crowd testing should be included in the project's test strategy. You do NOT think it should. Which limitation of crowd testing MOST influences your view?
答案：D
解題說明：
The correct answer is A . Crowd testing can provide scale, diversity of devices, and real-world variety, but its major weakness for a safety-critical road traffic control system is the variability of tester skill and therefore the variability of test quality. CTAL-TA v4.0 discusses crowd testing as a technique that may be useful in some contexts but has limitations, including variability in tester capability, control, coordination, documentation, and confidentiality. For a safety-critical system, the decisive factor is not geographical inconvenience or volume of findings; it is the need for controlled, rigorous, repeatable, competent testing against safety-relevant behavior.
Traffic signal control software must be tested using disciplined techniques, traceable test conditions, formal models, carefully selected scenarios, and controlled environments. Incorrect behavior could cause accidents, traffic conflict, or unsafe signal timing. Crowd testers are unlikely to have the necessary domain knowledge, safety-testing discipline, access to representative simulation rigs, or ability to produce the evidence expected for a safety-critical project.
Option B is a real crowd-testing limitation, but coordination overhead is not the strongest objection here.
Option C may matter, but the question gives no special confidentiality driver. Option D is relevant, but documentation burden is secondary to the unacceptable variability in testing quality. Reference: CTAL-TA v4.
0, Section 3.5.1 Crowd Testing .
問題 #30
You are defining test environment requirements for an online retail application that will have to handle high transaction volumes and uses a third-party payment authorization gateway.
Which requirement is MOST important for the functional testing?
答案：C
解題說明：
The correct answer is A . Functional testing of an online retail application must verify business flows such as checkout, payment authorization, declined payments, authorization timeouts, retry behavior, order confirmation, and error handling. Since the application uses a third-party payment authorization gateway , the test environment must either connect safely to a suitable test version of that gateway or simulate it with a test double. CTAL-TA v4.0 states that test environment requirements are defined during test design based on test conditions, test cases, test data, test levels, test types, and the "availability and independence of components and systems," which may indicate the need for test doubles , such as stubs or drivers.
For functional testing, gateway simulation is critical because many payment outcomes must be controlled and repeatable. Testers need to force approved, rejected, expired, timeout, duplicate, and error responses without relying on a real external payment provider or live financial transactions.
Option B is more relevant to usability or end-to-end experience testing. Option C is not appropriate for a Test Analyst's functional black-box focus, and CTAL-TA explicitly notes that white-box techniques are covered in the Technical Test Analyst syllabus. Option D is important for performance testing, not primarily functional testing. Reference: CTAL-TA v4.0, Section 1.3.3 Test Environment Requirements .
問題 #31
The following use case diagram shows the process of raising a Purchase Request (PR) and getting it authorized. Details are entered in batches; any that fail validation will be rejected and must be re-entered. The details will indicate whether the request is a normal one or an emergency one. Normal requests must be authorized by the department manager, who may refuse to do so. Emergency requests will be automatically authorized and reported to the manager.
The test strategy states that:
* all combinations of extensions and exceptions, as well as the main scenario, shall be tested
* loops shall get simple loop coverage where the maximum number of iterations for validation exceptions is 3 and the typical number is 2.
What is the minimum quantity of test cases that will be needed to obtain this coverage?
答案：A
解題說明：
The correct answer is B , because the minimum required set is 6 test cases . CTAL-TA v4.0 explains that scenario-based testing derives tests from scenario models, including the main scenario plus alternative and exception flows. It also states that simple loop coverage requires testing a loop when it is skipped, executed exactly once, executed more than once using a typical number of iterations, and executed with the maximum number of iterations if possible. Here, the validation exception loop has maximum 3 and typical 2 , so the validation loop must be covered with 0, 1, 2, and 3 iterations.
The feasible scenario combinations are:
* Main scenario: normal request, validation succeeds, manager approves.
* Validation exception only, then normal approval.
* Emergency request only.
* Normal request refused by manager only.
* Validation exception combined with emergency request.
* Validation exception combined with manager refusal.
The validation loop iteration coverage can be distributed across the validation-related cases: one case with 1 failed validation, one with 2 failed validations, and one with 3 failed validations. The main scenario supplies the 0-iteration case. Emergency and manager-refusal scenarios cannot be combined because an emergency request bypasses normal manager authorization. Therefore, fewer than six tests would miss either a required feasible extension/exception combination or one of the required loop-coverage cases. Reference: CTAL-TA v4.0, Scenario-Based Testing and Simple Loop Coverage .
問題 #32
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