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ISTQB-CTFL Exam Questions
- Topic 1: Fundamentals of Testing: This topic covers the basic principles of testing, the reasons why testing is required, and the objectives of testing. It also discusses the test process, the major test activities, and testware. Additionally, the topic explores the essential skills for testing.
- Topic 2: Testing Throughout the Software Development Lifecycle: It discusses on how testing is incorporated into various development approaches, including the concepts of test-first approaches and DevOps. This topic also covers the different test levels, test types, and maintenance testing.
- Topic 3: Static Testing: It introduces the basics of static testing, including the feedback and review process.
- Topic 4: Test Analysis and Design: This topic discusses the application of black-box, white-box, and experience-based test techniques to derive test cases from different software work products. It also covers the collaboration-based test approach.
- Topic 5: Managing the Test Activities: It covers test planning and effort estimation, the influence of risks on the scope of testing, monitoring and controlling test activities, the role of configuration management in supporting testing, and the clear reporting of defects.
- Topic 6: Test Tools: This topic focuses on the classification of tools and the understanding of the risks and benefits of test automation.
Free ISTQB ISTQB-CTFL Exam Actual Questions
Note: Premium Questions for ISTQB-CTFL were last updated On Jun. 24, 2026 (see below)
A software application incorrectly provided customers discounts of 50% off their total purchases if the purchases exceeded S100. It was discovered through an audit that the discount should have been only 5% off these purchases. A root cause analysis uncovered that the requirements Incorrectly stated 50% instead of 5% in this scenario.
Which of the following MOST accurately reflects this scenario?
According to the ISTQB CTFL syllabus, a defect is a deviation from the expected result which in this scenario is the incorrect discount applied to the customers. The root cause, as per the ISTQB definition, is the originating cause of a defect, which in this case is the incorrect requirement stating 50% instead of 5%. Therefore, the incorrect requirement is the root cause and the customer receiving the wrong discount is the effect of this root cause. Reference: ISTQB Certified Tester Foundation Level Syllabus v4.0, Section 1.4.3 'Defects, Root Causes, and Effects'.
Which ONE of the following statements about state transition testing is correct?
State transition testing is a black-box testing technique used to analyze the behavior of a system by examining the transitions between different states in response to events. In state transition testing, a state table or diagram is used to represent the states of a system and the transitions between these states triggered by events.
Option D is correct because in state transition testing, all transitions between states should be explicitly shown in the state table. This includes valid transitions that the system is expected to make under normal operation and, where relevant, invalid transitions that should be tested to ensure the system handles unexpected or erroneous inputs gracefully. The state table provides a comprehensive view of how the system should behave, making it possible to create tests that cover all defined transitions.
The following rules determine the annual bonus to be paid to a salesman of a company based on the total annual amount of the sales made (referred to as TAS).
If the TAS is between 50k and 80k, the bonus is 10%. If the TAS exceeds 80k by a value not greater than 40k, the bonus is 15%. Finally, if the TAS
exceeds the maximum threshold which entitles to a 15% bonus, the bonus is 22%.
Consider applying equivalence partitioning to the TAS (Note: 1k = 1000 euros).
Which one of the following answers contain only test cases that belong to the same equivalence partition?
This answer is correct because equivalence partitioning is a test design technique that divides the input domain of a system or component into partitions of equivalent data, such that each partition is expected to produce the same output or behavior. Equivalence partitioning aims to reduce the number of test cases by selecting one representative value from each partition. In this case, the input domain of the TAS can be divided into four partitions based on the bonus rules: less than 50k, between 50k and 80k, between 80k and 120k, and more than 120k. The test cases in the answer belong to the same partition, which is between 80k and 120k, and they are expected to produce the same output, which is a bonus of 15%.Reference: ISTQB Glossary of Testing Terms v4.0, ISTQB Foundation Level Syllabus v4.0, Section 2.3.2.1
Which of the following is a possible reason for introducing a defect in software code?
The ISTQB CTFL syllabus identifies several causes for defects in software. One prominent reason, as highlighted in the curriculum, is the pressure and rush to meet tight deadlines, which can lead to insufficiently reviewed or tested code being moved into further stages of testing or production. This scenario describes rushing to meet a deadline as a potential cause for defects because it may compromise the thoroughness of code development and testing. Reference: ISTQB Certified Tester Foundation Level Syllabus v4.0, Section 1.4.1 'Why is Testing Necessary?'.
Which ONE of the following is a characteristic of exploratory testing?
- Select Question Types you want
- Set your Desired Pass Percentage
- Allocate Time (Hours : Minutes)
- Create Multiple Practice tests with Limited Questions
- Customer Support
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