ISTQB FOUNDATION LEVEL
EXAM 2025 QUESTIONS AND
ANSWERS
What is the test basis?
a. The point during software development when testing should start
b. The body of knowledge used for test analysis and design
c. The source to determine the actual results from a set of tests
d. The method used to systematically devise test conditions - ....ANSWER ...-B
(B is correct. Per the glossary, the test basis is "a source to determine expected results to
compare with the actual result of the system under test". A is not correct because this is
usually defined as the moment of involvement for testing. C is not correct because this is
the test oracle. D is not correct because the test basis is not a method)
When the tester verifies the test basis while designing tests early in the lifecycle, which
common test
objective is being achieved?
a. Gaining confidence
b. Finding defects
c. Preventing defects
....FOR STUDY PURPOSES...©️2025 ALL RIGHTS RESERVED... 1
,d. Providing information for decision making - ....ANSWER ...-C
(C is correct per the syllabus. The other three are achieved primarily by doing dynamic
testing. This is a bit tricky because you are very likely to find defects while doing this
analysis and this may lead to either gaining or destroying confidence and needing to
supply information to the decision makers. However, the wording of the question
matches the wording in the syllabus that defines preventing defects.)
When following the fundamental test process, when should the test control activity take
place?
a. During the planning activities
b. During the implementation and execution activities
c. During the monitoring activities
d. During all the activities - ....ANSWER ...-D
(D is correct. Control occurs throughout the
project to ensure that it is staying on track based
on the plan and to take any corrective steps that
may be necessary. The monitoring information is
used to determine if control actions are needed.)
Which of the following is a correct statement?
a. A developer makes a mistake which causes a defect that may be seen as a failure
during dynamic testing
....FOR STUDY PURPOSES...©️2025 ALL RIGHTS RESERVED... 2
,b. A developer makes an error which results in a failure that may be seen as a fault when
the software is executed
c. A developer has introduced a failure which results in a defect that may be seen as a
mistake during dynamic testing
d. A developer makes a mistake which causes a bug that may be seen as a defect when
the software is executed - ....ANSWER ...-A
(A is correct. The developer makes a mistake/error which causes a defect/fault/bug
which may cause a failure when the code is dynamically tested or executed. B is
incorrect because fault and failure are reversed. C is incorrect because failure and
mistake are reversed. D is incorrect because it's a failure that's seen during execution,
not the defect itself. The failure is a symptom of the defect.)
Which of the following is an example of debugging?
a. A tester finds a defect and reports it
b. A tester retests a fix from the developer and finds a regression
c. A developer finds and fixes a defect
d. A developer performs unit testing - ....ANSWER ...-C
(C is correct. Debugging is what the developer
does to identify the cause of the defect, analyze
it and fix it. D may involve debugging, if the
developer finds a defect, but the act of unit
testing is not the same as debugging.)
....FOR STUDY PURPOSES...©️2025 ALL RIGHTS RESERVED... 3
, Which of the following is a true statement about exhaustive testing?
a. It is a form of stress testing
b. It is not feasible except in the case of trivial software
c. It is commonly done with test automation
d. It is normally the responsibility of the developer during unit testing -
....ANSWER ...-B
(B is correct. Exhaustive testing, all combinations
of inputs and preconditions, is not feasible unless
the software is trivially simple.Otherwise it would
take too long and might not even be possible.)
A new retail product was released to production by your company. Shortly after the
release it was
apparent that there were numerous problems with the point of sale application. This
resulted in a
number of customer complaints and negative postings on social media encouraging
people to take their
business to your competitor. You have investigated the problems and have discovered
that the
production point of sale equipment is a later model than the model used in testing. The
software
functions correctly on the old version, but fails on the later model.
....FOR STUDY PURPOSES...©️2025 ALL RIGHTS RESERVED... 4
EXAM 2025 QUESTIONS AND
ANSWERS
What is the test basis?
a. The point during software development when testing should start
b. The body of knowledge used for test analysis and design
c. The source to determine the actual results from a set of tests
d. The method used to systematically devise test conditions - ....ANSWER ...-B
(B is correct. Per the glossary, the test basis is "a source to determine expected results to
compare with the actual result of the system under test". A is not correct because this is
usually defined as the moment of involvement for testing. C is not correct because this is
the test oracle. D is not correct because the test basis is not a method)
When the tester verifies the test basis while designing tests early in the lifecycle, which
common test
objective is being achieved?
a. Gaining confidence
b. Finding defects
c. Preventing defects
....FOR STUDY PURPOSES...©️2025 ALL RIGHTS RESERVED... 1
,d. Providing information for decision making - ....ANSWER ...-C
(C is correct per the syllabus. The other three are achieved primarily by doing dynamic
testing. This is a bit tricky because you are very likely to find defects while doing this
analysis and this may lead to either gaining or destroying confidence and needing to
supply information to the decision makers. However, the wording of the question
matches the wording in the syllabus that defines preventing defects.)
When following the fundamental test process, when should the test control activity take
place?
a. During the planning activities
b. During the implementation and execution activities
c. During the monitoring activities
d. During all the activities - ....ANSWER ...-D
(D is correct. Control occurs throughout the
project to ensure that it is staying on track based
on the plan and to take any corrective steps that
may be necessary. The monitoring information is
used to determine if control actions are needed.)
Which of the following is a correct statement?
a. A developer makes a mistake which causes a defect that may be seen as a failure
during dynamic testing
....FOR STUDY PURPOSES...©️2025 ALL RIGHTS RESERVED... 2
,b. A developer makes an error which results in a failure that may be seen as a fault when
the software is executed
c. A developer has introduced a failure which results in a defect that may be seen as a
mistake during dynamic testing
d. A developer makes a mistake which causes a bug that may be seen as a defect when
the software is executed - ....ANSWER ...-A
(A is correct. The developer makes a mistake/error which causes a defect/fault/bug
which may cause a failure when the code is dynamically tested or executed. B is
incorrect because fault and failure are reversed. C is incorrect because failure and
mistake are reversed. D is incorrect because it's a failure that's seen during execution,
not the defect itself. The failure is a symptom of the defect.)
Which of the following is an example of debugging?
a. A tester finds a defect and reports it
b. A tester retests a fix from the developer and finds a regression
c. A developer finds and fixes a defect
d. A developer performs unit testing - ....ANSWER ...-C
(C is correct. Debugging is what the developer
does to identify the cause of the defect, analyze
it and fix it. D may involve debugging, if the
developer finds a defect, but the act of unit
testing is not the same as debugging.)
....FOR STUDY PURPOSES...©️2025 ALL RIGHTS RESERVED... 3
, Which of the following is a true statement about exhaustive testing?
a. It is a form of stress testing
b. It is not feasible except in the case of trivial software
c. It is commonly done with test automation
d. It is normally the responsibility of the developer during unit testing -
....ANSWER ...-B
(B is correct. Exhaustive testing, all combinations
of inputs and preconditions, is not feasible unless
the software is trivially simple.Otherwise it would
take too long and might not even be possible.)
A new retail product was released to production by your company. Shortly after the
release it was
apparent that there were numerous problems with the point of sale application. This
resulted in a
number of customer complaints and negative postings on social media encouraging
people to take their
business to your competitor. You have investigated the problems and have discovered
that the
production point of sale equipment is a later model than the model used in testing. The
software
functions correctly on the old version, but fails on the later model.
....FOR STUDY PURPOSES...©️2025 ALL RIGHTS RESERVED... 4
