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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 Sep. 05, 2026 (see below)
Consider the following examples of risks identified in different software development projects
[1]. It may not be possible to generate the expected workloads to run performance tests, due to the poor hardware equipment of the machines (load injectors) that should generate these workloads.
[ii]. A user's session on a web application is not invalidated after a certain period of inactivity (configured by the system administrator) of the user,
[iii]. The test team will not have an adequate requirements specification (since many requirements will still be missing) by the time test design and analysis activities should begin according to the test plan.
[IV]. Following a failure, the system is unable to continue to maintain its pre-failure operation and some data becomes corrupted.
Which of the following statements is TRUE?
In software testing, risks are categorized into product risks and project risks. Product risks are associated with the potential of a product to fail in meeting its quality criteria. Project risks are related to potential issues that could affect the project's ability to deliver a product.
[i] is a project risk because it concerns the availability and adequacy of hardware resources for performance testing.
[ii] is a product risk because it pertains to a security and functionality issue within the web application.
[iii] is a project risk because it involves the availability of necessary requirements documentation for the testing process.
[iv] is a product risk because it relates to the system's functionality and data integrity after a failure.
Thus, statement A correctly classifies [ii] and [iv] as product risks and [i] and [iii] as project risks.
Which test level aims to gain the users' confidence in the system, especially in the fulfillment of the system's operational and performance capabilities?
Which ONE of the following options MOST ACCURATELY describes branch testing?
Comprehensive and Detailed In-Depth Explanation:
Branch testing is a structural testing technique that ensures each branch (decision point) in the control flow is executed at least once. The goal is to measure branch coverage, which is the number of branches exercised divided by the total number of branches.
(A) describes statement testing, not branch testing.
(B) and (D) introduce confusion between decisions and statements, whereas branch testing focuses on control flow branches.
In simple terms, branch testing checks that all possible decision outcomes (true/false) are executed, whereas statement testing only ensures that each line of code is executed.
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.
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