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100% Pass BCS - Updated CTFL4 - ISTQB Certified Tester Foundation Level CTFL 4.0 Test Lab Questions

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BCS CTFL4 Exam Syllabus Topics:

Topic
Details

Topic 1

Test Tools: The topic discusses classification of tools. It also focuses on the risks and benefits of test automation.

Topic 2

Testing Throughout the Software Development Lifecycle: This topic explains how testing is incorporated into different development approaches. It also focuses on the concepts of test-first approaches.

Topic 3

Managing the Test Activities: This topic explains how to plan tests in general, monitor and control test activities, and report defects in a clear and understandable way.

Topic 4

Fundamentals of Testing: It discusses the basic principles related to testing. The topic evaluates your understandings about the test process.

Topic 5

Test Analysis and Design: It focuses on black-box and the collaboration-based test approach.

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BCS ISTQB Certified Tester Foundation Level CTFL 4.0 Sample Questions (Q170-Q175):

NEW QUESTION # 170
Your organization's test strategy states that it is desirable to usemore than one method for estimating test effort. You are responsible for estimating test effort for the next project. Based on historical data, the development-to-test effort ratiois5:3.
The initial estimate for thedevelopment effort is 450 person-days.
Which ONE of the following options corresponds to the estimatedtest effortusing the ratio-based method?

A. 720 person-days
B. 180 person-days
C. 270 person-days
D. 750 person-days

Answer: C

Explanation:
Comprehensive and Detailed In-Depth Explanation:Theratio-based estimation methodrelies on historical relationships betweendevelopment and testing effort.
Using the given5:3 ratio:

Thus, the correct answer is270 person-days (D).
* (A) and (C) are incorrectas they overestimate the effort.
* (B) underestimates the testing effort based on the ratio.
Ratio-based estimationhelps allocate resources effectively based on past project data.

NEW QUESTION # 171
Which of the following statements about estimation of the test effort is WRONG?

A. Experience based estimation is one of the estimation techniques.
B. Effort estimate can be inaccurate because the quality of the product under tests is not known.
C. Once the test effort is estimated, resources can be identified and a schedule can be drawn up.
D. Effort estimate depends on the budget of the project.

Answer: D

Explanation:
* Effort estimate does not depend on the budget of the project, but rather on the scope, complexity, and quality of the software product and the testing activities1. Budget is a constraint that may affect the feasibility and accuracy of the effort estimate, but it is not a factor that determines the effort estimate. Effort estimate is the amount of work required to complete the testing activities, measured in terms of person-hours, person-days, or person-months2.
* The other options are correct because:
* A. Once the test effort is estimated, resources can be identified and a schedule can be drawn up, as they are interrelated aspects of the test planning process3. Resources are the people,tools, equipment, and facilities needed to perform the testing activities4. Schedule is the time frame and sequence of the testing activities, aligned with the project milestones and deadlines5.
* B. Effort estimate can be inaccurate because the quality of the product under tests is not known, as it affects the number and severity of the defects that may be found and the rework that may be needed to fix them6. Quality is the degree to which the software product satisfies the specified requirements and meets the needs and expectations of the users and clients7.
* D. Experience based estimation is one of the estimation techniques, which relies on the judgment and expertise of the testers and other project stakeholders to estimate the test effort based on similar projects or tasks done in the past. Experience based estimation can be useful when there is a lack of historical data, formal methods, or detailed information about the software product and the testing activities.
References =
* 1 ISTQB Certified Tester Foundation Level Syllabus v4.0, 2023, p. 154
* 2 ISTQB Certified Tester Foundation Level Syllabus v4.0, 2023, p. 155
* 3 ISTQB Certified Tester Foundation Level Syllabus v4.0, 2023, p. 156
* 4 ISTQB Certified Tester Foundation Level Syllabus v4.0, 2023, p. 157
* 5 ISTQB Certified Tester Foundation Level Syllabus v4.0, 2023, p. 158
* 6 ISTQB Certified Tester Foundation Level Syllabus v4.0, 2023, p. 159
* 7 ISTQB Certified Tester Foundation Level Syllabus v4.0, 2023, p. 16
* [8] ISTQB Certified Tester Foundation Level Syllabus v4.0, 2023, p. 160
* [9] ISTQB Certified Tester Foundation Level Syllabus v4.0, 2023, p. 161

NEW QUESTION # 172
A calculator software is used to calculate the result for 5+6.
The user noticed that the result given is 6.
This is an example of;

A. Mistake
B. Error
C. Failure
D. Fault

Answer: C

Explanation:
According to the ISTQB Glossary of Testing Terms, Version 4.0, 2018, page 18, a failure is "an event in which a component or system does not perform a required function within specified limits". In this case, the calculator software does not perform the required function of calculating the correct result for 5+6 within the specified limits of accuracy and precision. Therefore, this is an example of a failure.
The other options are incorrect because:
* A mistake is "a human action that produces an incorrect result" (page 25). A mistake is not an event, but an action, and it may or may not lead to a failure. For example, a mistake could be a typo in the code, a wrong assumption in the design, or a misunderstanding of the requirement.
* A fault is "a defect in a component or system that can cause the component or system to fail to perform its required function" (page 16). A fault is not an event, but a defect, and it may or may not cause a failure. For example, a fault could be a logical error in the code, a missing specification in the design, or a contradiction in the requirement.
* An error is "the difference between a computed, observed, or measured value or condition and the true, specified, or theoretically correct value or condition" (page 15). An error is not an event, but a difference, and it may or may not result in a failure. For example, an error could be a rounding error in the calculation, a measurement error in the observation, or a deviation error in the condition.
References = ISTQB Glossary of Testing Terms, Version 4.0, 2018, pages 15-18, 25; ISTQB CTFL 4.0 - Sample Exam - Answers, Version 1.1, 2023, Question 96, page 34.

NEW QUESTION # 173
Which of the following is a typical potential risk of using test automation tools?

A. Reduced repeatability and consistency of tests compared to manual testing
B. Reduced feedback times regarding software quality compared to manual testing.
C. Underestimation of effort required to maintain test scripts.
D. Reduced test execution limes compared to manual testing.

Answer: C

Explanation:
One of the common risks associated with test automation tools is the underestimation of the effort required to maintain test scripts. Test scripts can become outdated or broken due to changes in the application, requiring significant effort to update and maintain them. This risk is highlighted in the ISTQB CTFL syllabus under the discussion of the benefits and risks of test automation.

NEW QUESTION # 174
Which one of the following statements correctly describes the term 'debugging'?

A. Debugging is of no relevance in Agile development.
B. Debugging is the development activity that finds, analyses and fixes defects.
C. There is no difference between debugging and testing.
D. Debugging is a confirmation activity that checks whether fixes resolved defects.

Answer: B

Explanation:
Debugging is the development activity that finds, analyses and fixes defects. Unlike testing, which aims to identify defects in the software, debugging is the process that developers use to locate and correct the errors found during testing. This involves diagnosing the root causes of these defects and making necessary code changes to resolve them. Debugging is a critical part of the development cycle and ensures that the software functions correctly after defects are fixed.
Reference: ISTQB CTFL Syllabus V4.0, Section 1.1.2

NEW QUESTION # 175
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