ISTQB-CTFL Free Practice Test

A software module to be used in a mission critical application incorporates an algorithm for secure transmission of data.
Which review type is most appropriate to ensure high quality and technical correctness of the algorithm?

1. A. Walkthrough
2. B. Informal Review
3. C. Technical Review
4. D. Management Review

Correct Answer: C
A technical review is a type of formal review that involves a team of technical experts who evaluate a software product against a set of predefined quality criteria. A technical review is suitable for ensuring high quality and technical correctness of complex or critical software components, such as algorithms, architectures or designs. A technical review is not a walkthrough, which is an informal review led by the author of the work product. A technical review is not an informal review, which is a review that does not follow a defined process and has no formal entry or exit criteria. A technical review is not a management review, which is a type of formal review that focuses on business aspects and project progress. Verified References: A Study Guide to the ISTQB® Foundation Level 2018 Syllabus - Springer, Chapter 3, page 29-30.

The testers in company A were part of the development team. Due to an organizational change they moved to be part of the support team.
What are the advantages and the disadvantages of this change?

1. A. Advantage: More independence in deciding what and how to test, Disadvantage: Isolation from me development team knowledge
2. B. Advantage: being closer to customer perspective, Disadvantage less independence in perspectives
3. C. Advantage: pulled to support tasks and having less time for testing, Disadvantage less chances to move a tester to development
4. D. Advantage: increased chances to move a tester to development; Disadvantage: pulled to support tasks and having less time for testing

Correct Answer: B
Being part of the support team means that the testers are closer to the customer perspective, which is an advantage for testing, as they can better understand the user needs and expectations, and identify more realistic scenarios and risks. However, being part of the support team also means that they have less independence in deciding what and how to test, as they may be influenced by the customer’s preferences or requests, which could compromise the objectivity and effectiveness of testing. Verified References: A Study Guide to the ISTQB® Foundation Level 2018 Syllabus - Springer, page 6.

Which of the following is a possible reason for introducing a defect in software code?

1. A. Rushing to meet a tight deadline to turn code over for testing
2. B. Improper unit testing
3. C. Improper system testing
4. D. Focus on static testing over dynamic testing

Correct Answer: A
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.References:ISTQB Certified Tester Foundation Level Syllabus v4.0, Section 1.4.1 "Why is Testing Necessary?".

Which ONE of the following statements about state transition testing is correct?

1. A. The state transition diagram explicitly shows all invalid transitions.
2. B. The size of the state table depends on the number of possible transitions between the states
3. C. Usually it is not possible to create tests to cover ell transitions and all stales
4. D. All transitions between states are explicitly shown in the state table.

Correct Answer: D
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.

Consider the following statements about risk-based testing.
I) Risk-based testing has the objective to reduce the level of protect risks.
II) Tests should be prioritized to find tie critical detects as early as possible.
III) Non-testing activities may also help to reduce risk
IV) Risks have to be reassessed on a regular basis.
V) The project stakeholders can give useful input to determine the risks

1. A. I III IV and V are tru
2. B. II is false.
3. C. II, III IV and V are correc
4. D. I is false.
5. E. I, II and IV are tru
6. F. III and V are false.
7. G. II, Ill and V are tru
8. H. 1 ants Iv are false.

Correct Answer: B
The following statements about risk-based testing are correct:
✑ II) Tests should be prioritized to find tie critical detects as early as possible. Risk- based testing involves prioritizing tests based on risk level, which reflects both the likelihood and impact of defects or failures. Tests with higher risk level should be executed earlier than tests with lower risk level, in order to find and fix critical defects as soon as possible.
✑ III) Non-testing activities may also help to reduce risk. Risk-based testing does not
only involve testing activities, but also other activities that can help mitigate risks, such as reviews, inspections, audits, simulations or prototyping.