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  1. Home
  2. ISTQB Certification
  3. ISTQB-CTFL Exam
  4. ISTQB.ISTQB-CTFL.v2026-04-09.q129 Dumps
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Question 111

Calculate the measurement error SD for the following estimates done using three point estimation technique- Most optimistic effort (a) -120 person days Most likely effort (m) -180 person days Most pessimistic effort (b)
- 240 person days

Correct Answer: C
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Question 112

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?

Correct Answer: B
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 Reference: A Study Guide to the ISTQBFoundation Level 2018 Syllabus - Springer, Chapter 3, page 29-30.
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Question 113

For a mandatory input field "ZIP code" the following rules are given:
1 - The valid ZIP code format is 5 numeric digits.
2 - The code has to exist in the post office's official ZIP code list
Using equivalence classes partitioning, how many test cases are required to test this field?

Correct Answer: D
Equivalence classes partitioning is a technique that divides the input data and output results of a software component into partitions of equivalent data. Each partition should contain data that is treated in the same way by the component. Equivalence classes partitioning can be used to reduce the number of test cases by selecting one representative value from each partition. For the ZIP code field, there are four equivalence classes based on the given rules:
* Valid ZIP code format and valid ZIP code value (e.g., 12345)
* Valid ZIP code format and invalid ZIP code value (e.g., 99999)
* Invalid ZIP code format and valid ZIP code value (e.g., 1234)
* Invalid ZIP code format and invalid ZIP code value (e.g., ABCDE) Therefore, four test cases are required to test this field, one for each equivalence class. Verified References: [A Study Guide to the ISTQB® Foundation Level 2018 Syllabus - Springer], Chapter 4, page 37-38.
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Question 114

Which of the following is MOST likely to be an example of a PROJECT risk?

Correct Answer: C
A project risk relates to potential issues that could affect the overall success of the project. Among the options provided, the risk that "Team members' skills may not be sufficient for the assigned work" is clearly a project risk because it pertains to the potential failure of the project due to inadequate skillsets among the team. This risk affects the entire project's ability to meet its objectives.
References:
ISTQB Certified Tester Foundation Level Syllabus v4.0, Section 1.4.2.
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Question 115

In a review, which of the following is the responsibility of the manager?

Correct Answer: B
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