Free Practice Questions for ISTQB ISTQB-CTFL Exam

Exploratory testing involves simultaneous test design and execution and is guided by a test charter, which outlines what needs to be tested, how it should be tested, and what to look for. This technique is typically conducted within predefined time periods, known as time-boxing, which allows testers to explore a system, understand its functionalities, and identify potential issues without detailed documentation or prior test case planning. The key aspects of exploratory testing include flexibility, adaptability, and the ability to respond to system behavior during testing.References:

ISTQB Certified Tester Foundation Level Syllabus v4.0, Section 4.4.2.

Comprehensive and Detailed In-Depth Explanation:Testing and debugging are separate but related activities. Testing executes the software to identify failures that result from defects (A). Debugging is the developer's responsibility and involves finding the cause of a failure (defect), analyzing it, and fixing the defect. The ISTQB syllabus explicitly differentiates these activities. Testing does not modify the software, whereas debugging does.

 A test oracle is a mechanism or principle that can be used to determine whether the observed behavior or output of a system under test is correct or not1. A test oracle can be based on various sources of expected results, such as specifications, user expectations, previous versions, comparable systems, etc2. References: ISTQB Certified Tester Foundation Level (CTFL) v4.0 Syllabus, Section 1.2.1, Page 91; ISTQB Glossary of Testing Terms, Version 4.0, Page 332.

The test leader is the person who is responsible for planning, monitoring, and controlling the test activities and resources in a test project. The test leader should have the best knowledge of the test objectives, scope, risks, resources, schedule, and quality criteria. The test leader should also be aware of the test automation criteria, such as the execution frequency, the test support, the team education, the roles and responsibilities, and the devs and testers collaboration1. Based on these factors, the test leader can decide which tests are suitable for automation and which are not, and prioritize them accordingly. The test leader can also coordinate with the test automation engineers, the developers, and the stakeholders to ensure the alignment of the test automation strategy with the test project goals and expectations. References = ISTQB Certified Tester Foundation Level (CTFL) v4.0 Syllabus, Chapter 2, Section 2.3.1, Page 152; ISTQB Glossary of Testing Terms v4.0, Page 403; ISTQB Certified Tester Foundation Level (CTFL) v4.0 Syllabus, Chapter 6, Section 6.1.1, Page 514; Top 8 Test Automation Criteria You Need To Fulfill - QAMIND1

A valid criticism of this report is that the version of the application is missing. The version of the application is an important piece of information that should be included in a defect report, as it helps to identify which release or build of the software product contains the defect. The version of the application can also help to reproduce and debug the defect, as different versions may have different behaviors or features. The other options are not valid criticisms of this report. The priority, the correction description and the developer name are not missing, but rather not applicable for this report. The priority is a measure of how urgently a defect needs to be fixed, which can be assigned by the project manager or the defect tracking system, not by the tester who reports the defect. The correction description and the developer name are information that are added after the defect has been resolved, not when it has been reported. There is no link to the applicable requirement (traceability) is not a valid criticism of this report, because traceability is not a mandatory attribute of a defect report, but rather an optional one.Traceability is a relationship between two or more entities (such as requirements, test cases, defects, etc.) that shows how they are related or dependent on each other. Traceability can help to verify that the requirements are met by the test cases and defects, but it is not essential for reporting a defect. The description is not highlighting the source of the problem is not a valid criticism of this report, because highlighting the source of the problem is not a responsibility of the tester who reports the defect, but rather of the developer who fixes the defect. The description should provide enough information to describe what happened when the defect occurred, such as input values, expected results, actual results, error messages, screenshots, etc., but it does not need to explain why or how it happened. Verified References: A Study Guide to the ISTQB® Foundation Level 2018 Syllabus - Springer, page 140.

The correct test execution sequence should consider both the dependencies between the requirements and their priorities. According to the diagram, the sequence begins with R2 (P1) as it is a prerequisite for R3 (P4). Then R1 (P3) can be tested. R3 follows as it depends on R2. Next, R7 (P4) should be tested before R6 (P3) and R5 (P2), as indicated by their dependencies. Finally, R4 (P1) and R8 (P1) can be tested. Therefore, the best sequence is R2, R1, R3, R7, R6, R5, R4, R8.Reference:ISTQB CTFL Syllabus V4.0, Section 5.1.5

The set of test inputs that achieve the relatively highest equivalence partition coverage for grading students is option D: 69, 79, 80, 89, 90. This set effectively tests the boundaries between each grade category, ensuring that the grading system accurately transitions from one grade to another at the correct thresholds​(ISTQB Main Web)​.References:

ISTQB® Certified Tester Foundation Level Syllabus v4.0:ISTQB CTFL Syllabus v4.0 PDF

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.

Comprehensive and Detailed In-Depth Explanation:Exploratory testingis an unscripted approach where testersactively design and execute testsbased on theirintuition, experience, and knowledgeof the system. Atest charter (A)provides a guideline on what areas to explore, defining test objectives but leaving room for dynamic adaptation.

(B), (C), and (D) contradict exploratory testing principles, which focus on freedom rather than rigid documentation.

Exploratory testing is especially useful inagile environments, usability testing, and uncovering unexpected defects.

A correct list of boundary values for the P input should include the minimum and maximum values of the valid range (15 and 350), as well as the values just below and above the boundaries (14 and 351). Boundary value analysis is a test design technique that involves testing the values at or near the boundaries of an input domain or output range, as these values are more likely to cause errors than values in the middle. Option B satisfies this condition, as it has all four boundary values (14, 15, 350, 351). Option A has only two boundary values (14 and 351), option C has only two boundary values (15 and 350), and option D has no boundary values at all. Verified References: A Study Guide to the ISTQB® Foundation Level 2018 Syllabus - Springer, page 34.