Sample Exam #3 (ISTQB) Exam Prep Questions And Answers (202472025)
Which of the following statements BEST describes one of the seven key principles
of software testing?
Answer Set:
a) By using automated testing it is possible to test everything.
b) With sufficient effort and tool support, exhaustive testing is feasible for all
software.
c) It is normally impossible to test all input/output combinations for a software
system.
d) The purpose of testing is to demonstrate the absence of defects. - ✔✔a) FALSE -
Exhaustive test is impossible, regardless of it being manual or automated. (Section
1.3; Principle #2).
b) FALSE - Exhaustive testing is impossible, regardless of the amount of the effort
put into testing (Section 1.4; Principle #2).
c) TRUE - Principle #2 (Section 1.3) states: "Testing everything (all combinations
of inputs and preconditions) is not feasible except for trival cases."
d) FALSE - This statement is contradicting Principle #1(Section 1.3): Testing shows
presence of defects: Testing can show that defects are present, but cannot prove that
there are no defects.
Which of the following statements is the MOST valid goal for a test team?
Answer Set:
,a) To determine whether enough component tests were executed within system
testing.
b) To detect as many failures as possible so that defects can be identified and
corrected.
c) To prove that all possible defects are identified.
d) To prove that any remaining defects will not cause any failures. - ✔✔a) FALSE
- Component testing is not part of System testing. (Section 2.2.1 and 2.2.3)
b) TRUE - This is the main role of a test team. (Section 1.2, objectives, 1. dot)
c) FALSE - Principle #1 states that exhaustive testing is impossible, so one can never
prove that all defects were identified.
d) FALSE - To make an assessment whether a defect will cause a failure or not, one
has to detect the defect first. Saying that no remaining defect will cause a failure,
implicitly means that all defects were found. This contradicts Principle #1.
Which of these tasks would you expect to be performed during the Test Analysis
and Design phase of the Fundamental Test Process?
Answer Set:
a) Defining test objectives
b) Reviewing the test basis
c) Creating test suites from test procedures
,d) Analyzing lessons learned for process improvement - ✔✔a) FALSE - this activity
is performed during "Test Planning" phase (section 1.4.1, sentence 1)
b) TRUE - this activity is performed during "Test Analysis and Design" phase
(section 1.4.2, 1. dot))
c) FALSE - this activity is performed during "Test Implementation and Execution"
phase (section 1.4.3, 3. dot)
d) FALSE - this activity is performed during "Test Closure Activities" phase (section
1.4.5; 6. dot)
Below is a list of problems that can be observed during testing or in production.
Which one of these problems is a failure?
Answer Set:
a) The product crashed when the user selected an option in a dialog box.
b) One source code file included in the build has the FALSE version.
c) The computation algorithm used FALSE input variables.
d) The developer misinterpreted the requirement for the algorithm. - ✔✔a) TRUE -
A failure is an external manifestation of a defect. A crash is clearly noticeable by
user.
b) FALSE - This type of mistake will not necessarily lead to a visible or noticeable
failure.
, For example: if the changes in the new version of the source file are only in the
comments.
c) FALSE - Use of a FALSE input variable will not necessarily lead to a visible or
noticeable failure. For example: if no one uses this specific algorithm; or: if the
Falsely used input variable had a similar value as the TRUE input variable; or: if no
one is using the FALSE result from the algorithm. "Defects in software, systems or
documents may result in failures, but not all defects do so." (Section 1.1.2; 1. Par.;
3. dot)
d) FALSE - This type of mistake will not necessarily lead to a visible or noticeable
failure.
For example: if no one uses this specific algorithm.
Which of the following attitudes, qualifications or actions would lead to problems
(or conflict) within mixed teams of testers and developers, when observed in reviews
and tests?
Answer Set:
a) Testers and developers are curious and focused on finding defects.
b) Testers and developers are sufficiently qualified to find failures and defects.
c) Testers and developers communicate defects as criticism of people, not as
criticism of the software product.
d) Testers expect that there might be defects in the software product which the
developers have not found and fixed. - ✔✔a) FALSE. There is no situation which
leads to conflict. Testers and developers should be focused on finding defects.
b) FALSE. This is a preferred situation, there is therefore no problem.
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