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Question 86

Which of the following coverage criteria results in the highest coverage for state transition based test cases?

A.Can't be determined
B.Covering all transitions at least once
C.Covering only start and end states
D.Covering all states at least once

Question 87

A program got 100% decision coverage in a test. Which of the following statements is then guaranteed to be true?

A.Every executable statement Is covered.
B.Every output equivalence class has been tested.
C.Every input equivalence class has been tested.
D.The "dead" code has not been covered.

Correct Answer: A

If a program got 100% decision coverage in a test, then it is guaranteed that every executable statement is covered. Decision coverage (also known as branch coverage) is a type of structural coverage (also known as white-box coverage) that measures how many decision outcomes have been exercised by a test suite. A decision outcome is a possible result of a decision point (such as an if-then-else statement) in a program's code. Decision coverage requires that each decision point has both true and false outcomes executed at least once by a test suite. Decision coverage implies statement coverage, which is another type of structural coverage that measures how many executable statements have been executed by a test suite. Statement coverage requires that each executable statement is executed at least once by a test suite. Therefore, if a program got 100% decision coverage in a test, then it also got 100% statement coverage in a test, which means that every executable statement is covered. The other options are not guaranteed to be true if a program got 100% decision coverage in a test. Every output equivalence class has been tested and every input equivalence class has been tested are not guaranteed to be true if a program got 100% decision coverage in a test, because equivalence classes are based on functional requirements or specifications, not on code structure or logic. Equivalence classes are used in specification-based testing (also known as black-box testing), which is a type of testing that does not consider the internal structure or implementation of the system under test.
Decision coverage is used in structure-based testing (also known as white-box testing), which is a type of testing that considers the internal structure or implementation of the system under test. Therefore, achieving
100% decision coverage does not imply achieving 100% equivalence class coverage. The "dead" code has not been covered is not guaranteed to be true if a program got 100% decision coverage in a test, because dead code (also known as unreachable code) is code that can never be executed due to logical errors or design flaws. Dead code can reduce readability and maintainability of the code, as well as increasecomplexity and size. Decision coverage does not account for dead code, as it only considers the decision outcomes that are possible to execute. Therefore, achieving 100% decision coverage does not imply that the dead code has not been covered. Verified References: A Study Guide to the ISTQB® Foundation Level 2018 Syllabus - Springer, page 36.

Question 88

Which of the following work products cannot be examined by static analysis?

A.Test plans
B.Source code
C.Compiled code
D.Formal models

Question 89

What role in a formal or technical review should mediate between different opinions to ensure an effective review?

A.Moderator (or facilitator)
B.Manager
C.Scribe (or recorder)
D.Reviewer

Question 90

You are testing a system that is used in motor vehicles to warn the driver of an obstacle when re-versing.
Output is provided by a series of LED lights (green, yellow, and red), each illuminated based on clearly defined conditions.
The following summary describes the functionality:
*Object within 10 metres, green LED lit.
*Object within 5 metres, yellow LED lit.
*Object within 1 metre, red LED lit.
*Setting sensitivity mode to "ON" will result in only the red LED being lit when the object is within 1 metre.
The following decision table describes the rules associated with the functioning of this proximity warning system:

Which intended functionality is tested by Rule 5 in the decision table?

A.Object is within 5 metres of the vehicle and the sensitivity mode is switched "off", resulting in the yellow LED being lit.
B.Object is within 5 metres of the vehicle and the sensitivity mode is switched "on", resulting in the yellow LED being lit.
C.Object is within 5 metres of the vehicle and the sensitivity mode is switched "off", resulting in no LED being lit.
D.Object is within 5 metres of the vehicle and the sensitivity mode is switched "on", resulting in no LED being lit.

Question 86

Question 87

Question 88

Question 89

Question 90

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