1. Which of the following statements describe a failure of a software?nna. A programmer misunderstood a part of the specificationnb. A user notices that the results produced do not match with what it should benc. An expression in C code uses the operator ‘-‘, was used by oversight in place of “+’nd. A program crashes when a tester enters a valid inputne. A reviewer reports that he/she has found a defect in the code.

Software Testing Week 1 NPTEL Assignment Answers 2025

NPTEL Software Testing Week 1 Assignment Answers 2025

1. Choose the right option to fill in the blank: Suppose a method M₁ calls a method M₂, which in turn, calls another method M₃. The level of testing that tests for the interface of calls from M₁ to M₂
and then to M3 is called as . . . . . . . . . . . ..

Functional testing.
Unit testing.
Integration testing.
System testing.

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2. State true of false: A coverage criterion C₁ said to subsume another coverage criterion C₂ if there is at least one test case that satisfies C₁ which also satisfies C₂.

True.
False.

Answer :

3. State true or false: Testing can be used to find all the errors in code.

True.
False.

Answer :

4. Which of the following are practised in level 3 thinking during testing?

Testing is a mental discipline, everyone in an organization strives to test thoroughly.
Testing is done mainly by developers, to debug their code.
Testing is done to identify failures and reduce risks.
Testing is done to show absence of errors.

Answer :

5. Which of the following best defines usability testing?

Testing done to ensure that the software looks nice.
Testing done to ensure that the software is usable by all the users.
Testing done to understand how users can use a software.
Testing done to ensure that the user interface of the software is as specified in the requirements.

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6. Which of the following is a list of white-box testing techniques?

Unit testing, performance testing.
Integration testing, stress testing.
Unit testing, integration testing.
Usability testing, performance testing.

Answer :

7. As per the lectures, which of the following sentences best defines a test case?

A test case contains only inputs to the software artifact.
A test case contains inputs to the software artifact along with the expected outputs.
A test case contains inputs to the software artifact and a decision on pass or fail.
A test case contains inputs to the software artifact, which is run and the actual output is also recorded as a part of the test case.

Answer :

8. When do we say that a set of test cases T satisfies the test requirements TR for a coverage criterion C?

For every test requirement tr ∈ TR, there is exactly one test case t ∈ T such that t satisfies tr.
For some test requirement tr ∈ TR, there is some test case t such that t ∈T such that t satisfies tr.
For some test requirement tr∈TR, all the test cases t ∈T are such that t satisfies tr.
For every test requirement tr ∈ TR , there is at least one test case t ∈ T such that t satisfies tr.