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BCS CTFL4 Exam Dumps - Key To Getting Success

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BCS CTFL4 Exam Syllabus Topics:

Topic
Details

Topic 1

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 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

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

BCS ISTQB Certified Tester Foundation Level CTFL 4.0 Sample Questions (Q61-Q66):

NEW QUESTION # 61
A state transition diagram describes a control system's behavior in different operational modes. The initial state is"NORMAL MODE".
Which ONE of the following test cases covers anINVALID sequence?

A. NORMAL MODE # DIAGNOSTIC MODE # DEGRADED MODE # EMERGENCY MODE #
DIAGNOSTIC MODE # NORMAL MODE # DIAGNOSTIC MODE
B. NORMAL MODE # DIAGNOSTIC MODE # NORMAL MODE # DIAGNOSTIC MODE #
EMERGENCY MODE # DIAGNOSTIC MODE # NORMAL MODE
C. NORMAL MODE # DIAGNOSTIC MODE # DEGRADED MODE # EMERGENCY MODE #
DIAGNOSTIC MODE # NORMAL MODE # DEGRADED MODE
D. NORMAL MODE # DEGRADED MODE # NORMAL MODE # DIAGNOSTIC MODE #
DEGRADED MODE # EMERGENCY MODE # DIAGNOSTIC MODE

Answer: B

Explanation:
Comprehensive and Detailed In-Depth Explanation:State transition testing validatesvalid and invalid state transitionsbased on defined rules.
* D is invalidbecause it transitionsfrom DIAGNOSTIC MODE directly to EMERGENCY MODE, which isnot a valid state changein most systems.
* Other options follow valid sequences according tostate transition rules.

NEW QUESTION # 62
During component testing of a program if 100% decision coverage is achieved, which of the following coverage criteria is also guaranteed to be 100%?

A. 100% Boundary value coverage
B. 100% Equivalence class coverage
C. 100% Stale transition coverage
D. 100% Statement coverage

Answer: D

Explanation:
Statement coverage is a structural coverage metric that measures the percentage of executable statements in the source code that are executed by a test suite1. Decision coverage is another structural coverage metric that measures the percentage of decision outcomes (such as branches or conditions) in the source code that are executed by a test suite1. Decision coverage is a stronger metric than statement coverage, because it requires that every possible outcome of each decision is tested, while statement coverage only requires that every statement is executed at least once2. Therefore, if a test suite achieves 100% decision coverage, it also implies that it achieves 100% statement coverage, because every statement in every branch or condition must have been executed. However, the converse is not true: 100% statement coverage does not guarantee 100% decision coverage, because some branches or conditions may have multiple outcomes that are not tested by the test suite2. For example, consider the following pseudocode:
if (x > 0) then print("Positive") else print("Non-positive") end if
A test suite that executes this code with x = 1 and x = -1 will achieve 100% statement coverage, because both print statements are executed. However, it will not achieve 100% decision coverage, because the condition x > 0 has only been tested with two outcomes: true and false. The third possible outcome, x = 0, has not been tested by the test suite. Therefore, the test suite may miss a potential bug or error in the condition or the branch.
The other options, such as stale transition coverage, equivalence class coverage, and boundary value coverage, are not guaranteed to be 100% by achieving 100% decision coverage. Stale transition coverage is a structural coverage metric that measures the percentage of transitions between states in a state machine that are executed by a test suite3. Equivalence class coverage is a functional coverage metric that measures the percentage of equivalence classes (or partitions) of input or output values that are tested by a test suite4. Boundary value coverage is another functional coverage metric that measures the percentage of boundary values (or extreme values) of input or output ranges that are tested by a test suite4. These metrics are independent of decision coverage, because they are based on different aspects of the system under test, such as its behavior, functionality, or specification. Therefore, achieving 100% decision coverage does not imply achieving 100% of any of these metrics, and vice versa. Reference = ISTQB Certified Tester Foundation Level Syllabus v4.0, Test Coverage in Software Testing - Guru99, Structural Coverage Metrics - MATLAB & Simulink - MathWorks India, Test Design Coverage in Software Testing - GeeksforGeeks.

NEW QUESTION # 63
A document descnbes the test procedures that have been derived for the identified test sets Among other things, the order in which the test cases in the corresponding test set are to be executed according to the dependencies described by preconditions and postconditions is specified This document is a typical work product produced as part of:

A. Test monitoring and control
B. Test design.
C. Test Implementation.
D. Test analysis

Answer: C

Explanation:
Test implementation involves finalizing the test procedures, including the order of execution of test cases based on their dependencies, preconditions, and postconditions. This phase ensures that all necessary test scripts, test data, and test environments are ready for execution. According to the ISTQB CTFL Syllabus v4.0, test implementation is the phase where detailed test procedures are derived and documented, making it a critical step before actual test execution.

NEW QUESTION # 64
A possible risk of introducing test automation is:

A. the tool may not be compatible with the development platform.
B. the tool may create additional development dependencies.
C. the tool will be owned and maintained by developers and replace testers.
D. the tool may not be fit-for-purpose.

Answer: D

Explanation:
One possible risk of introducing test automation is that the selected tool may not be fit-for-purpose. This means that the tool might not meet the specific needs and requirements of the project, leading to inefficiencies and possibly failing to provide the expected benefits. It is crucial to evaluate and select the appropriate tool based on the project's context and objectives. The ISTQB CTFL syllabus highlights the importance of careful tool evaluation and selection to ensure it aligns with the testing goals and the development environment.

NEW QUESTION # 65
Which of the following statements is true?

A. A defect may cause a failure which, when occurring, always causes an error
B. Bugs are defects found during component testing, while failures are defects found at higher test levels
C. Failures can be caused by defects, but also by environmental conditions
D. A defect does not always produce a failure, while a bug always produces a failure

Answer: C

Explanation:
Failures can be caused by defects, but also by environmental conditions. A failure is an event in which the software system does not perform a required function or performs a function incorrectly, according to the expected behavior. A defect is a flaw in the software system or a deviation from the requirements or the specifications, that may cause a failure. However, not all failures are caused by defects, as some failures may be caused by environmental conditions, such as hardware malfunctions, network interruptions, power outages, incompatible configurations, etc. Environmental conditions are factors that affect the operation of the software system, but are not part of the software system itself. The other statements are false, because:
* A defect does not always produce a failure, while a bug always produces a failure. This statement is false, because a defect may or may not produce a failure, depending on the inputs, the outputs, the states, or the scenarios of the software system, and a bug is just another term for a defect, so it has the same possibility of producing a failure as a defect. For example, a defect in a rarely used feature or a hidden branch of the code may never produce a failure, while a defect in a frequently used feature or a critical path of the code may produce a failure often. A bug is not a different concept from a defect, but rather a synonym or a colloquial term for a defect, so it has the same definition and implications as a defect.
* A defect may cause a failure which, when occurring, always causes an error. This statement is false, because an error is not a consequence of a failure, but rather a cause of a defect. An error is a human action or a mistake that produces a defect in the software system, such as a typo, a logic flaw, a requirement misunderstanding, etc. An error is not observable in the software system, but rather in the human mind or the human work products, such as the code, the design, the documentation, etc. A failure is not a cause of an error, but rather a result of a defect, which is a result of an error. For example, an error in the code may cause a defect in the software system, which may cause a failure in the software behavior.
* Bugs are defects found during component testing, while failures are defects found at higher test levels.
This statement is false, because bugs and failures are not different types of defects, but rather different terms for defects and their manifestations. As mentioned before, bugs are just another word for defects, and failures are the events in which the software system does not perform as expected due to defects.
Bugs and failures can be found at any test level, not only at component testing or higher test levels. Test levels are the stages of testing that correspond to the levels of integration of the software system, such as component testing, integration testing, system testing, and acceptance testing. Defects and failures can occur and be detected at any test level, depending on the test objectives, the test basis, the test techniques, and the test environment. References: ISTQB Certified Tester Foundation Level (CTFL) v4.
0 sources and documents:
* ISTQB Certified Tester Foundation Level Syllabus v4.0, Chapter 1.1.2, Testing and Quality1
* ISTQB Certified Tester Foundation Level Syllabus v4.0, Chapter 1.2.1, Testing Principles1
* ISTQB Certified Tester Foundation Level Syllabus v4.0, Chapter 1.3.1, Testing in Software Development Lifecycles1
* ISTQB Glossary of Testing Terms v4.0, Failure, Defect, Bug, Environmental Condition, Error, Test Level2

NEW QUESTION # 66
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