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ISTQB-Foundation Level Exam Sample Questions (Q291-Q296):

NEW QUESTION # 291
Following a risk-based testing approach you have designed 10 tests to cover a product risk with a high-risk level. You want to estimate, adopting the three-point test estimation technique, the test effort required to reduce the risk level to zero by executing those 10 tests. You made the following three initial estimates:
* most optimistic = 6 person hours
* most likely = 30 person hours
* most pessimistic = 54 person hours
Based only on the given information, which of the following answers about the three-point test estimation technique applied to this problem is true?

A. The final estimate is exactly 30 person hours because the technique uses the arithmetic mean of the three initial estimates as the final estimate
B. The final estimate is between 6 person hours and 54 person hours
C. The final estimate is exactly 30 person hours because the technique uses the initial most likely estimate as the final estimate
D. The final estimate is between 22 person hours and 38 person hours

Answer: D

Explanation:
The three-point test estimation technique is a method of estimating the test effort based on three initial estimates: the most optimistic, the most likely, and the most pessimistic. The technique uses a weighted average of these three estimates to calculate the final estimate, which is also known as the expected value. The formula for the expected value is:
Expected value = (most optimistic + 4 * most likely + most pessimistic) / 6 Using the given values, the expected value is:
Expected value = (6 + 4 * 30 + 54) / 6 Expected value = 30 person hours However, the expected value is not the only factor to consider when estimating the test effort. The technique also calculates the standard deviation, which is a measure of the variability or uncertainty of the estimates. The formula for the standard deviation is:
Standard deviation = (most pessimistic - most optimistic) / 6
Using the given values, the standard deviation is:
Standard deviation = (54 - 6) / 6 Standard deviation = 8 person hours
The standard deviation can be used to determine a range of possible values for the test effort, based on a certain level of confidence. For example, using a 68% confidence level, the range is:
Expected value ± standard deviation
Using the calculated values, the range is:
30 ± 8 person hours
Therefore, the final estimate is between 22 person hours and 38 person hours, which is option A.
References: ISTQB Certified Tester Foundation Level Syllabus v4.01, Section 2.3.2, page 24-25; ISTQB Glossary v4.02, page 33.

NEW QUESTION # 292
Which of the following statements about decision tables are TRUE?
I Generally, decision tables are generated for low risk test items.
II Test cases derived from decision tables can be used for component tests.
III Several test cases can be selected for each column of the decision table.
IV The conditions in the decision table represent negative tests generally.

A. II. IV
B. II. Ill
C. Generally, decision tables are generated for low risk test items. Decision tables are not related to risk level, but rather to complexity level. Decision tables are generated for test items that have complex logic or multiple conditions and actions that need to be tested.
D. I. IV
E. I. Ill

Answer: B

Explanation:
IV. The conditions in the decision table represent negative tests generally. The conditions in the decision table represent both positive and negative tests, depending on whether they are valid or invalid inputs for the test item. Verified Reference: A Study Guide to the ISTQB Foundation Level 2018 Syllabus - Springer, Chapter 4, page 42-43.
Explanation:
A decision table is a technique that shows combinations of inputs and/or stimuli (causes) with their associated outputs and/or actions (effects). A decision table consists of four quadrants: conditions (inputs), actions (outputs), condition entries (values) and action entries (results). The following statements about decision tables are true:
II. Test cases derived from decision tables can be used for component tests. Decision tables can be used to test components that have multiple inputs and outputs that depend on logical combinations of conditions. Decision tables can help cover all possible combinations or scenarios in a systematic way.
III. Several test cases can be selected for each column of the decision table. A column of a decision table represents a unique combination of condition entries and action entries. Several test cases can be selected for each column by varying other input values or expected results that are not part of the decision table. The following statements about decision tables are false:

NEW QUESTION # 293
Manager responsibilities in formal review includes ad except one of the following:

A. Determines if the review objectives have been met
B. Decide on the execution of reviews
C. Planning the review
D. Allocate time for review

Answer: A

Explanation:
A formal review is a type of review that follows a defined process with formal entry and exit criteria and roles and responsibilities for participants. A formal review can have various roles involved, such as manager, moderator, author, reviewer and scribe. The manager responsibilities in formal review include all except one of the following:
* Planning the review (correct responsibility)
* Determines if the review objectives have been met (incorrect responsibility)
* Decide on the execution of reviews (correct responsibility)
* Allocate time for review (correct responsibility) The responsibility of determining if the review objectives have been met belongs to the moderator role, not to the manager role. Verified References:
[A Study Guide to the ISTQB Foundation Level 2018 Syllabus - Springer], Chapter 3, page 28-29.

NEW QUESTION # 294
A typical objective of testing is to

A. Verify the compliance of the test object with regulatory requirements.
B. Verify the correct creation and configuration of the test environment
C. Determine the most appropriate level of detail with which to design test cases.
D. Plan test activities in accordance with the existing test policy and test strategy

Answer: A

Explanation:
One of the primary objectives of testing is to ensure that the software or system being tested meets all regulatory requirements. This is crucial in many industries where compliance with laws and standards is mandatory. According to the ISTQB CTFL Syllabus v4.0, testing aims to evaluate the quality of the software product and verify that it complies with specified requirements, including regulatory requirements.

NEW QUESTION # 295
In which of the following cases you would NOT execute maintenance testing?

A. Update to the Maintainability requirements during the development phase
B. Migration of the system data to a replacement system
C. Retirement of the software or system
D. Modifications to a released software or system

Answer: A

Explanation:
Maintenance testing is testing performed on a software product after delivery to correct defects or improve performance or other attributes. Maintenance testing can be triggered by various situations, such as modifications to a released software or system, migration of the system data to a replacement system, or retirement of the software or system. Maintenance testing is not executed when there is an update to the maintainability requirements during the development phase, as this is not a maintenance situation but rather a change request that should be handled by the development process. Verified Reference: [A Study Guide to the ISTQB Foundation Level 2018 Syllabus - Springer], Chapter 2, page 18-19.

NEW QUESTION # 296
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ISTQB ISTQB-CTFL Exam | ISTQB-CTFL Instant Access - 100% Pass Rate Offer of Valid Braindumps ISTQB-CTFL Pdf

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ISTQB-Foundation Level Exam Sample Questions (Q291-Q296):

ISTQB-Foundation Level Exam Latest Exam Preparation & ISTQB-CTFL Free Study Guide & ISTQB-Foundation Level Exam exam prep material