ISTQB CTFL-2018 Practice Test - Questions Answers, Page 25
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Question 241

A system sets new users' password to a temporary password
The temporary password is a random number based on the first sft: characters of the username.
If the username is shorter than 6 characters, the system displays an error message.
Which of the following is a possible representation of equivalence classes for the username string?
Explanation:
The equivalence classes for the username string are based on the length of the string, not on the type of password or the error message. Therefore, option C is correct, as it divides the username string into two equivalence classes: shorter than 6 characters and equal to or longer than 6 characters. Option A is incorrect, as it does not consider the length of the username string. Option B is incorrect, as it does not specify the criteria for displaying or not displaying the error message. Option D is incorrect, as it confuses the username string with the password string.
Question 242

What is a 'test harness'?
Explanation:
A test harness is a test environment comprised of stubs and drivers needed to execute a test, especially when testing components or interfaces. Therefore, option D is correct. Option A is incorrect, as a test harness is not a topic for the final Test Report. Option B is incorrect, as a test harness is not a general name for test data. Option C is incorrect, as a test harness is not a detailed description of a test case.
Question 243

For a given set of test-cases, which of the following is a benefit of running these tests with a test automation tool?
Explanation:
Explanation of Correct Answer: A benefit of running tests with a test automation tool is that the time
Question 244

Which of the following is a key characteristic of informal reviews?
Explanation:
Explanation of Correct Answer: A key characteristic of informal reviews is that they are low cost, as
Question 245

Which of the following statements correctly describe Black-Box Testing''
Explanation:
Black-box testing is a test technique that investigates the input vs. output behavior of a software system, without considering its internal structure or implementation. Therefore, option B is correct. Option A is incorrect, as it describes white-box testing, which focuses on the internal structure or implementation of a software system. Option C is incorrect, as it describes exploratory testing, which relies on the testers' intuition and experience. Option D is incorrect, as it describes integration testing, which tests the interfaces and interactions between components or systems.
Question 246

Which of the following are correct tasks during 'Test analysis and design'?
I, Designing and prioritizing test cases
II, Identifying any required infrastructure and tools
II,I, Reviewing the test basis
IV Creating test data and preparing test harnesses
V, Writing automated test scripts
Explanation:
Test analysis and design is the phase of the test process where test cases and test data are designed and prioritized, based on the test basis and test objectives. Therefore, option C is correct, as it includes tasks I, II, and II,I, Option A is incorrect, as it includes tasks IV and V, which are part of test implementation and execution phase. Option B is incorrect, as it includes task IV, which is part of test implementation and execution phase. Option D is incorrect, as it does not include task II,I, which is part of test analysis and design phase.
Question 247

While reporting a defect, which of the following indicates the level of business importance assigned to the defect?
Explanation:
Explanation of Correct Answer: Priority indicates the level of business importance assigned to the
Question 248

Which of the following should be considered when purchasing a test execution tool?
Explanation:
A test execution tool is a tool that executes tests on a software system and logs the outcomes of each test step. The ability of the tool to run the unit-level tests for the developers is one of the factors that should be considered when purchasing a test execution tool, as it can improve the efficiency and effectiveness of testing at this level. The other options are not relevant to test execution tools, but to other types of tools such as test management tools, test measurement tools, and requirements management tools.
Reference:Section 6.1.1,Section 6.3.2
Question 249

Which of the following factors is LEAST likely to be used as a basis for estimating testing effort?
Explanation:
Work Breakdown Structure (WBS) is a project management technique that decomposes a project into smaller and manageable tasks. It is not a factor that is used as a basis for estimating testing effort, but rather an outcome of the estimation process. The other options are factors that can influence the testing effort, such as the quality of the test basis, the requirements for documentation, and the skills of the test team.
Question 250

Can 'cost' be regarded as Exit criteria'?
Explanation:
Cost can be regarded as an exit criterion, as it is one of the factors that can influence the decision to stop testing. Spending too much money on testing will result in an unprofitable product, and having cost as an exit criterion helps avoid this. The other options are incorrect, as the financial value of product quality can be estimated, the cost of testing can be measured effectively, and having cost as an exit criterion does not necessarily constrain the testing project or help achieve the desired quality level.
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