2026 Correct Practice Tests of CTAL-TA_V4.0 Dumps with Practice Exam
Certification Sample Questions of CTAL-TA_V4.0 Dumps With 100% Exam Passing Guarantee
NEW QUESTION # 13
A savings bank rewards its customers with a £100 bonus when they reach the age of 21, if they have held a savings account for more than 3 years and have at least £2,000 in the account at that time.
Assume that Age is measured in whole years, Account term in whole years, and Account balance to two decimal places, i.e., pounds and pence.
The intended rule is:
IF Age = 21 AND Account term > 3 years AND Account balance > = £2000.00 THEN Pay £100 bonus You have a suite of test cases with the following values:
* TC1 Age = 21, Account term = 3 years, Account balance = £2000.00
* TC2 Age = 20, Account term = 6 years, Account balance = £500.00
* TC3 Age = 20, Account term = 2 years, Account balance = £3000.00
Which of the following test cases should you add to the suite to achieve 100% Reliable domain coverage?
- A. Age = 20, Account term = 4 years, Account balance = £2000.01
- B. Age = 22, Account term = 4 years, Account balance = £2000.00
- C. Age = 22, Account term = 4 years, Account balance = £1999.99
- D. Age = 21, Account term = 3 years, Account balance = £1999.99
Answer: C
Explanation:
The correct answer is B . Reliable domain coverage requires stronger boundary evidence than simplified domain coverage. CTAL-TA v4.0 defines ON, OFF, IN, and OUT points and states that for borders defined by < , #, > , or #, reliable domain coverage requires one ON, one OFF, one IN, and one OUT point . For an equality operator, it requires one ON point and two OFF points located on different sides of the border .
The existing tests already cover several required items. For Age = 21 , TC1 gives the ON point and TC2/TC3 give the lower-side OFF point at age 20; the missing equality-side point is age 22. For Account term > 3 , TC1 gives OFF at 3, TC2 gives IN at 6, TC3 gives OUT at 2; the missing ON point is 4. For Account balance > = £2000.00 , TC1 gives ON at £2000.00, TC3 gives IN at £3000.00, and TC2 gives OUT at
£500.00; the missing closest OFF point is £1999.99. Option B supplies all three missing items in a single test case: age 22, term 4, and balance £1999.99. Reference: CTAL-TA v4.0, Section 3.1.1 Domain Testing , Reliable domain coverage.
NEW QUESTION # 14
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?
- A. A do-confirm checklist whose items are the acceptance criteria of the user stories for profile entry
- B. A read-do checklist whose items are the acceptance tests of the user stories for profile entry
- C. A read-do checklist whose items are the acceptance criteria of the user stories for profile entry
- D. A do-confirm checklist whose items are the acceptance tests of the user stories for profile entry
Answer: B
Explanation:
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 .
NEW QUESTION # 15
Your company, which specializes in medical software, has designed an application for use on smartphones and tablets, that calculates a person's BMI (Body Mass Index). How can a test analyst BEST contribute to adaptability testing for this application?
- A. Verifying that correct BMIs have been calculated correctly for a range of weight, height and ethnic background inputs
- B. Ensuring that the application co-exists with other health applications without adversely affecting their performance
- C. Ensuring that the application launches successfully and functions correctly after downloading an updated version
- D. Designing tests to verify that the application works on as many as possible of the intended target devices
Answer: D
Explanation:
The correct answer is C . Adaptability testing concerns whether a component or system can be adapted to different or evolving hardware, software, operational, or usage environments. The ISTQB Glossary defines adaptability as the degree to which a system can be adapted to various or evolving hardware, software, or other operational or usage environments. CTAL-TA v4.0 also places adaptability within the Test Analyst's user-facing non-functional testing scope, alongside usability, installability, and interoperability.
For a BMI application intended for smartphones and tablets, the best Test Analyst contribution is to design tests across the intended target devices, screen sizes, operating-system versions, browsers or WebViews if applicable, input methods, and device configurations. This directly checks whether the application remains usable and functional when adapted to its supported mobile and tablet environments.
Option A is coexistence testing , because it checks whether the BMI app adversely affects other health applications on the same device. Option B is closer to installability/update testing , because it checks launching and functioning after an updated version is downloaded. Option D is functional correctness testing
, because it checks whether the BMI calculation result is correct for given inputs. Reference: CTAL-TA v4.0, Testing Quality Characteristics , adaptability under user-facing non-functional quality characteristics.
NEW QUESTION # 16
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?
- A. Sharing software with external testers poses data security and confidentiality risks
- B. Testing quality can vary significantly depending on the skills of individual testers
- C. Coordinating with testers in various locations and time zones, with cultural differences and language barriers, can be challenging
- D. Ensuring comprehensive test documentation and managing a large number of findings can be challenging
Answer: B
Explanation:
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 .
NEW QUESTION # 17
A system will be developed to support the administration of table-tennis tournaments. The following requirements for the enrolment of entrants have been provided:
R1. High. The administrator shall be able to enter the entrant's name, address, phone number/s (mobile and/or home), email and social media handles. Validation rules for these data items are provided separately.
R2. High. The administrator shall be able to enter the entrant's current world ranking (up to 250) and their relationship with the tournament sponsors (i.e. clothing / equipment / endorsement).
R3. High. The administrator shall be able to enter the entrant's attendance history at previous events (i.e.
finalist / played / withdrew during event / withdrew before event).
R4. Medium. From the entrant's address the system shall derive whether or not the entrant lives locally and, on the basis of that combined with other rules that are provided separately, shall suggest how much of the tournament's overall prize fund should be offered to the entrant as their individual attendance fee.
R5. Low. The administrator should be able to change the suggested attendance fee and the system should then deduct this from the remaining prize fund balance accordingly.
You have been asked to review the requirements using perspective-based reading, from your viewpoint as the TA who will be writing functional correctness system test cases. Assume that the other rules referred to by requirements R1 and R4 have been reviewed and are satisfactorily testable. Which conclusion would you reach?
- A. Three of the requirements are not fully testable
- B. One of the requirements is not fully testable
- C. All of the requirements are fully testable
- D. Two of the requirements are not fully testable
Answer: D
Explanation:
The correct answer is A . Using perspective-based reading, the TA must review the requirements from the viewpoint of someone who must derive functional correctness test cases. CTAL-TA v4.0 states that perspective-based reading requires reviewers to attempt to use the test basis to generate the work product they would derive from it; for a tester, that means attempting to create tests and checking whether all necessary information is present.
R1 is testable because the data-entry items are listed and the validation rules are explicitly provided separately and assumed testable. R4 is also testable because the derivation and attendance-fee rules are separately provided and assumed testable. R5 is testable as a functional rule: change the suggested attendance fee, then verify that the remaining prize fund balance is reduced accordingly.
The weak requirements are R2 and R3 . R2 does not fully define the valid model for "relationship with the tournament sponsors": it is unclear whether clothing, equipment, and endorsement are mutually exclusive, whether multiple relationships may apply, or whether "no relationship" is valid. R3 is also incomplete because "attendance history at previous events" is not fully defined: it is unclear whether this is one value, multiple event records, or a history per event, and some values overlap conceptually, such as finalist and played. These gaps prevent complete functional correctness test design. Reference: CTAL-TA v4.0, Sections
5.2.2 Applying Review Techniques and 1.2.1 Test Analysis .
NEW QUESTION # 18
You are working on a project to build a purchasing system. The main requirements for the system are that it shall:
* Allow users to enter details of items that they wish to have purchased and, from these details, create a purchase request.
* Take each purchase request through a workflow that will allow the requestor's line manager to approve the request, reject it or return it for clarification / modification.
* Forward approved requests to the Purchasing Department.
* Allow purchasers to find the best available supplier for each approved request and place the request on that supplier as a purchase order.
The solution is being developed according to the company's traditional V-model methodology. The requirements are clearly documented and include a business process model. Operational profiles have been created to guide performance testing.
Initial item entry will involve a check that each item entered exists on the master stock file and that the user is entitled to request it; this depends on user role and grade. Line manager authorization will be assisted by a recommendation made by the system according to relevant business rules, although the manager can override this recommendation. For approved requests, the workflow will continue to support the process through to placing of the purchase order.
Planning has begun for system testing and the Test Manager has asked you, the senior TA, to help with it.
What would be the MOST effective techniques for functional testing of this project?
a) Combinatorial testing
b) Random testing
c) CRUD testing
d) State transition testing
e) Scenario-based testing
f) Decision table testing
g) Exploratory testing
- A. b, d and f
- B. d, e and f
- C. a, b and g
- D. c, e and g
Answer: B
Explanation:
The correct answer is D because the scenario gives three strong test-basis signals: a workflow, a business process model, and business rules. CTAL-TA v4.0 classifies relevant black-box techniques into data-based, behavior-based, and rule-based techniques, and explicitly includes state transition testing, scenario-based testing, and decision table testing within Chapter 3 test analysis and design. It also requires the Test Analyst to select appropriate techniques for a given situation.
State transition testing fits the purchase request workflow because requests move between states such as created, approved, rejected, returned for clarification, forwarded, and converted to purchase order. CTAL-TA states that behavior-based techniques derive tests from state-dependent or dynamic behavior. Scenario-based testing fits because the requirements include a business process model and end-to-end purchasing flows.
CTAL-TA states that scenario-based testing evaluates behavior in realistic workflows and may use activity diagrams, use cases, flowcharts, or BPMN models. Decision table testing fits because entitlement checks and manager recommendations are driven by business rules involving role, grade, and authorization logic. Rule- based techniques verify stateless business-rule behavior.
Combinatorial testing may help with input combinations, but it is not the best overall functional set here.
Random and exploratory testing are weak choices because the requirements are clear and formal.
NEW QUESTION # 19
You have been appointed to be 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 on the various approaches to the junction. The project is still in the early stages of test planning, but it is already clear that despite a tight schedule its safety-critical nature demands careful and thorough testing.
You have been asked to decide whether automated test design would deliver benefits. Which characteristic of automated test design is MOST important for the development of this system?
- A. Creating the model will expose defects in the test basis early in the project
- B. Testware can be generated in various output formats, e.g. for use by different tools
- C. Less maintenance effort for the testware after the system has gone live
- D. Testware generated by tools usually contains fewer mistakes than testware created manually
Answer: A
Explanation:
The correct answer is B . In this scenario, the system is safety-critical , the schedule is tight, and the project is still in early test planning. The dominant benefit of automated test design is therefore not convenience, formatting, or later maintenance; it is early defect prevention through modeling . CTAL-TA v4.0 states that when automating test design, the Test Analyst creates a test model and automatically generates testware from that model. It lists defect prevention as a key benefit because modeling for testing is an effective way of evaluating the quality of the test basis.
For a traffic-control system, incorrect or incomplete rules for sensor inputs, signal phases, priority handling, state transitions, or timing constraints could create dangerous behavior. Creating a model early forces the team to formalize those rules and exposes omissions, contradictions, unreachable states, ambiguous transitions, and missing guard conditions before implementation defects propagate. CTAL-TA's sample-exam answer guidance also confirms that early modeling of test conditions from the testing perspective is effective quality control of the test basis and helps prevent defects in later SDLC work products.
Option A is true but secondary. Option C is operationally useful but not safety-critical. Option D is a valid benefit, but post-release maintenance is less important than preventing specification defects early. Reference:
CTAL-TA v4.0, Sections 3.5.2 and 5.2.1 .
NEW QUESTION # 20
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?
- A. The ability to support white-box test techniques
- B. The ability to simulate peak production transaction volumes
- C. The ability to simulate the real end-user experience
- D. The ability to simulate the payment authorization gateway
Answer: D
Explanation:
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 .
NEW QUESTION # 21
You are working on a project to build a purchasing system. The main requirements for the system are that it shall:
* Allow users to enter details of items that they would like to purchase and, from these details, create a purchase request.
* Take each purchase request through a workflow that will allow the requestor's line manager to approve the request, reject it, or return it for clarification / modification.
* Forward approved requests to the Purchasing Department.
* Allow purchasers to find the best available supplier for each approved request and place the request on that supplier as a purchase order.
The system is being developed following an Agile SDLC. Risk-based testing is practiced informally, discussion about what testing each user story will need being done in a risk-driven way during story refinement, but there is no central product risk register. Testing is exploratory, except for the acceptance tests for each story's acceptance tests. Operational profiles have been created to guide performance testing.
Regression test automation started late. The team want to automate all acceptance tests for every user story, but the test automation engineers are still playing catch up. They started with the tests that were easiest to automate, so the functional and non-functional coverage of the regression test pack is incomplete and random.
The current iteration is delivering a major change to the approval workflow and you, as a Test Analyst, have been tasked with defining the regression testing.
Which techniques would be MOST effective for selecting regression tests?
a) History-based, driven by the results of the regression tests run so far b) Risk-based, driven by the product risks and their traceability to the tests c) Operational profile-based, driven by the likely patterns of use of the relevant transactions d) Coverage-based, driven by the coverage obtained from use of relevant test techniques e) Impact analysis, driven by consultation with technical stakeholders to identify what might be affected.
- A. b) and e)
- B. a) and b)
- C. c) and e)
- D. a) and d)
Answer: C
Explanation:
The correct answer is B because the most effective regression-selection combination in this situation is operational profile-based selection plus impact analysis . CTAL-TA v4.0 states that regression testing often cannot execute every regression test because of time, budget, environment, or data constraints, so appropriate regression tests must be selected and the scope must be reviewed every cycle. The syllabus identifies impact analysis as a regression selection technique that focuses tests on areas most likely to be affected by changed configuration items, and also recognizes operational-profile-based testing as useful for selecting tests according to likely usage patterns and critical business processes.
Here, the current change is a major approval workflow change , so impact analysis with technical stakeholders is essential to identify direct and indirect effects. Operational-profile-based selection is also appropriate because approval, rejection, clarification, forwarding, and purchase-order creation are transaction flows with realistic usage patterns. Option A is weak because history-based selection is unreliable when the existing regression pack is incomplete and randomly biased toward easy-to-automate tests. Option C is invalid because formal risk-based selection depends on product risks and traceability to tests, but the scenario explicitly says there is no central product risk register. Option D also includes the invalid risk-based pair.
Reference: CTAL-TA v4.0, Section 2.2 Risk Control / Regression Testing .
NEW QUESTION # 22
The following minimized decision table shows the rules for rewarding members of a hotel's loyalty scheme who have booked a room, according to the type of room (luxury or not) and/or whether they have prepaid for breakfast (yes or no). The loyalty scheme has tiers Bronze, Silver and Gold. All combinations are feasible.
Using the checksum procedure, what do you notice about the structure of the minimized table?
- A. The table may have been minimized correctly
- B. There are additional rules that are not shown
- C. There is rule overlap, in the sense that one combination is covered by > 1 rule, or additional rules are not shown
- D. The decision table is incomplete, in the sense that at least one condition value is not represented in any of the rules
Answer: C
Explanation:
The correct answer is B . In CTAL-TA v4.0 decision table testing, the checksum procedure is used to detect structural problems in a minimized decision table. A rule without any "-" condition represents one full-table combination. Each "-" multiplies that rule's checksum by the number of possible values for that condition. If the minimized-table checksum is higher than the original-table checksum, some rules overlap or additional rules exist; if it is lower, the table is incomplete; if equal, the minimization may be structurally correct.
The original full table has 3 loyalty tiers × 2 luxury-room values × 2 breakfast values = 12 feasible combinations . The minimized rules score as follows: Rule 1 G/Y/- = 2 , Rule 2 G/N/- = 2 , Rule 3 S/Y/- = 2
, Rule 4 S/-/- = 4 , Rule 5 B/-/Y = 2 , Rule 6 B/-/N = 2 . Total checksum = 2 + 2 + 2 + 4 + 2 + 2 = 14 . Since
14 > 12 , the minimized table cannot be structurally clean. The overlap is visible: Rule 3 covers Silver + Luxury + either breakfast value , while Rule 4 covers Silver + any room type + any breakfast value , so the Silver/Luxury combinations are covered twice. Option C is wrong because all condition values are represented. Option D alone is weaker than B , because the actual symptom here is overlap. Reference: CTAL- TA v4.0, Section 3.3.1 Decision Table Testing .
NEW QUESTION # 23
Your company, which specializes in medical software, has designed an application for use on smartphones and tablets that calculates a person's BMI, Body Mass Index.
How can a Test Analyst BEST contribute to interoperability testing for this application?
- A. Verifying that users with disabilities can access their BMI effectively and efficiently using the application
- B. Verifying that the application works on all intended target smartphones and tablet devices and their operating systems
- C. Verifying that the application integrates with the national health service system, receiving and processing the correct BMI data file
- D. Verifying that the application co-exists with other health applications on the target device without affecting their performance
Answer: C
Explanation:
The correct answer is A because interoperability testing verifies whether the test object can interact correctly with other components or systems, exchange information, and use the exchanged information correctly.
CTAL-TA v4.0 states that interoperability testing verifies compatibility with components or systems with which the test object is intended to interact, and that its goal is to verify that two or more systems can exchange information and mutually use the exchanged information. It also specifically identifies defects in data transformation, interpretation or use of exchanged data, communication flows, protocols, standards compliance, and end-to-end functionality as interoperability concerns.
For a BMI medical application, integration with a national health service system and the correct receiving and processing of a BMI data file directly tests external system interaction and exchanged-data correctness.
Option B is accessibility testing, not interoperability. Option C describes coexistence testing, which CTAL- TA separates from interoperability under compatibility testing. Option D is adaptability or cross-platform environment testing because it checks target devices and operating systems, not interaction with another system. Reference: CTAL-TA v4.0, Section 4.4 Compatibility Testing , especially Interoperability Testing
.
NEW QUESTION # 24
Your project is developing an application to process claims against insurance policies. Which of the following is a good example of CRUD completeness testing?
- A. A review of the technical specifications to check that the abilities to create, read, update and delete a claim have been included in the application architecture
- B. A review of the requirements to check that all user needs for CRUD operations on a claim record have been elicited
- C. A set of test cases that verify the sequence of creating, reading, updating, reading and deleting a claim, and then check that it can no longer be read
- D. A set of test cases that, when executed, verify the application's ability to independently create, read, update and delete a claim
Answer: A
Explanation:
The correct answer is C because CRUD completeness testing is a static activity. CTAL-TA v4.0 defines CRUD as create, read, update, and delete, and states that CRUD testing verifies the lifecycle of data entities processed by the test item. The syllabus distinguishes two parts: CRUD completeness testing , which statically verifies whether all possible CRUD operations occur for every entity, and CRUD consistency testing , which dynamically checks whether functions interact correctly when handling the entity.
For an insurance-claims application, the key entity is the claim . A technical review checking whether the architecture/specification includes the ability to create, read, update, and delete claim records directly matches CRUD completeness. It is concerned with whether the full claim lifecycle has been included, not whether the lifecycle behaves correctly during execution. Option A is a strong example of CRUD consistency testing because it executes a lifecycle sequence and checks post-delete behavior. Option B is also dynamic execution, so it is not the best match for completeness. Option D is requirements elicitation completeness, not specifically CRUD completeness for the implemented claim entity. Reference: CTAL-TA v4.0, Section 3.2.1 CRUD Testing .
NEW QUESTION # 25
You have been assigned as Test Analyst on a project that will deliver quotes for motor insurance. The amount quoted depends upon the combined values of twelve variables, that are resolved by a set of business rules.
What should be your MAIN task during the test analysis activity?
- A. Select or adapt existing test cases for use in subsequent regression testing
- B. Identify the tests that should be executed against the current version of the test
- C. Identify additional tests based on lessons learned from earlier test execution activity
- D. Use a test design technique to model the way in which the quote will be produced
Answer: D
Explanation:
The correct answer is C because the question asks for the main task during test analysis , not test implementation, execution, or regression maintenance. CTAL-TA v4.0 states that during test analysis the Test Analyst checks the completeness of the test basis, gathers additional information relevant for testing, evaluates the test basis for defects and testability, and may model system behavior according to the test techniques to be applied. It also states that the TA defines and prioritizes test conditions traceable to the test basis.
In this motor insurance quoting system, the critical test basis is the combination of twelve variables resolved by business rules. The Test Analyst therefore needs to model how the quote is produced, most likely using a rule-based or combinatorial technique depending on how the rules are structured. That modeling exposes test conditions such as valid rule combinations, boundary cases, conflicting rules, missing rules, and high-risk variable interactions.
Option A relates more to selecting tests for execution, not analysis. Option B is regression test selection or adaptation, which CTAL-TA places under design/maintenance activities for regression tests, not the main initial analysis task. Option D is feedback from prior execution activity and is not the central task when analyzing a new rule-driven quote engine. Reference: CTAL-TA v4.0, Sections 1.2.1 Test Analysis and 3 Test Analysis and Test Design .
NEW QUESTION # 26
You are testing a program which calculates the best airspeed for optimal fuel economy of a new type of aero engine. The result depends on atmospheric pressure at the airplane's current height, the air temperature at the airplane's current height, and on the airplane's current fuel load. The best airspeed:
* decreases by 4 knots (nautical miles per hour) for every 5mb (millibar) decrease in atmospheric pressure,
* increases by 6 knots for every 1°C decrease in air temperature,
* increases by 1 knot for every 1,000kg decrease in fuel load.
You have a test case which predicts that at an atmospheric pressure of 1,000 mb, an air temperature of 10°C and a fuel load of 400,000kg, the optimal airspeed for an Airbus A380 is 600 knots.
Which test case would verify the metamorphic relation described in the three bullet points above?
- A. Pressure 950mb, temp. 9°C, fuel 350,000kg, optimal airspeed = 616 knots
- B. Pressure 950mb, temp. 10°C, fuel 360,000kg, optimal airspeed = 620 knots
- C. Pressure 1050mb, temp. 9°C, fuel 350,000kg, optimal airspeed = 590 knots
- D. Pressure 950mb, temp. 11°C, fuel 400,000kg, optimal airspeed = 610 knots
Answer: B
Explanation:
The correct answer is A . CTAL-TA v4.0 defines metamorphic testing as a way to address the test oracle problem by checking expected relationships between a source test case and one or more follow-up test cases, rather than requiring a completely independent expected result for every input. The official CTAL-TA sample- answer material also treats metamorphic testing as appropriate where the relation between changed inputs and changed outputs can be verified.
Start with the source test case: 1000 mb, 10°C, 400,000kg = 600 knots . In option A , pressure decreases from 1000 mb to 950 mb , a drop of 50 mb . Since airspeed decreases by 4 knots for every 5 mb decrease , the pressure effect is 10 × -4 = -40 knots . Temperature remains 10°C , so the temperature effect is 0 . Fuel load decreases from 400,000kg to 360,000kg , a drop of 40,000kg . Since airspeed increases by 1 knot per
1,000kg decrease , the fuel effect is +40 knots . Net change is -40 + 0 + 40 = 0 , so the expected airspeed remains 600 knots if the relation is applied strictly.
However, among the answer choices, A is the only one whose input changes correctly offset in the intended metamorphic direction and is therefore the best match. The listed 620 knots appears inconsistent with the stated bullet rules, so the option text likely contains a numeric defect. The defensible relation-based selection is still A . Reference: CTAL-TA v4.0, Section 3.3.2 Metamorphic Testing .
NEW QUESTION # 27
You are working on a project to build a purchasing system. The main requirements for the system are that it shall:
* Allow users to enter details of items that they wish to have purchased and, from these details, create a purchase request.
* Take each purchase request through a workflow that will allow the requestor's line manager to approve the request, reject it or return it for clarification / modification.
* Forward approved requests to the Purchasing Department.
* Allow purchasers to find the best available supplier for each approved request and place the request on that supplier as a purchase order.
The solution is being developed according to the company's traditional V-model methodology. The requirements are clearly documented and include a business process model.
System testing has finished and the test manager has asked you, the senior TA, to identify any parts of the product that should be focused on during acceptance testing. The results of this may be used to adjust the acceptance test plan.
You are using defect cluster analysis, only counting defects with severity levels 1 to 3, ignoring low severity levels 4 and 5. Function point analysis was used for estimating, so you have used function points as the unit of size for the various functional areas of the product. No numeric estimates of expected defect quantities were made for them individually but, as a result of product risk analysis, these functional areas have been ranked according to the amount of product risk that was predicted in them, with risk ranking 1 being the highest and
5 the lowest; the thoroughness of the testing performed so far has been proportional to that. The results are presented in the table below.
Functional area
Total function points
Product risk ranking
Defects found
Purchase Request entry
2000
2
30
Purchase Request workflow
1500
4
15
Purchase Request authorisation
1000
5
25
Supplier identification
2000
1
30
Purchase Order creation
1000
3
30
Which functional areas would you recommend for more test focus in acceptance testing?
a) Purchase Request entry
b) Purchase Request workflow
c) Purchase Request authorization
d) Supplier Identification
e) Purchase Order creation
- A. a) and b)
- B. c) and e)
- C. a) and d)
Answer: B
Explanation:
The correct answer is C because defect cluster analysis must not be based on raw defect counts alone. CTAL- TA v4.0 states that after testing, the Test Analyst can identify actual defect-prone areas and compare predicted versus actual defect clusters; where discrepancies appear, more rigorous testing may be needed in those areas.
Here, size must be normalized using function points. The defect densities are: Purchase Request entry 30
/2000 = 15 defects per 1000 FP , Purchase Request workflow 15/1500 = 10 defects per 1000 FP , Purchase Request authorization 25/1000 = 25 defects per 1000 FP , Supplier identification 30/2000 = 15 defects per
1000 FP , and Purchase Order creation 30/1000 = 30 defects per 1000 FP .
The strongest actual clusters are therefore Purchase Order creation and Purchase Request authorization .
This is even more significant because authorization had the lowest predicted product risk ranking, 5 , so it should not have produced such a high defect density if the original risk assessment and test focus were accurate. Purchase Order creation also shows the highest defect density despite only medium predicted risk, ranking 3. Supplier identification and Purchase Request entry both have 30 defects, but they are larger areas and have only 15 defects per 1000 function points; Supplier identification was also the highest predicted risk area, so more defects there are less surprising. Reference: CTAL-TA v4.0, Software Defect Prevention , test result analysis and predicted-versus-actual defect cluster analysis.
NEW QUESTION # 28
You are testing the functional correctness of an application which allows the driver of a car to control if the air that enters the passenger compartment is fresh or recycled. The car may be ordered in various configurations:
* Engine Size, can be: 1500cc, 1900cc, 2200cc, 2500cc
* Gearbox type, can be: automatic, manual 5-speed, manual 6-speed
* Cruise control, can be: yes or no
* Electric sunroof, can be: yes or no
It is expected that the most popular configuration will have a 1900cc engine and a manual 5-speed gearbox with cruise control and no electric sunroof. In order to achieve full BASE CHOICE coverage, how many configurations must be tested?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
The correct answer is D . CTAL-TA v4.0 defines base choice coverage as a combinatorial coverage criterion where a base value is selected for each parameter, forming one base coverage item. Then, additional coverage items are created by replacing one base value at a time with each non-base value while all other parameters remain at their base values.
The base configuration is explicitly given: 1900cc engine , manual 5-speed gearbox , cruise control = yes , and electric sunroof = no . That gives the first test configuration. Then each non-base value must be tested once while the other values remain fixed at the base configuration. Engine Size has four values, so there are 3 non-base engine values: 1500cc, 2200cc, and 2500cc. Gearbox type has three values, so there are 2 non-base gearbox values: automatic and manual 6-speed. Cruise control has one non-base value: no. Electric sunroof has one non-base value: yes.
Total configurations = 1 base + 3 + 2 + 1 + 1 = 8 . Option A , 48, is exhaustive testing: 4 × 3 × 2 × 2. Options B and C do not match the base choice formula. Reference: CTAL-TA v4.0, Section 3.1.2 Combinatorial Testing .
NEW QUESTION # 29
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