Software Engineering Software Testing and Quality Assurance

Question 1

Which type of testing verifies that individual units or components of a software system work correctly in isolation?

Accepted Answer

Unit Testing

Answer

Unit Testing tests individual components or functions in isolation to verify that each unit performs as expected.

Question 2

What is the primary purpose of regression testing?

Accepted Answer

Ensure that existing functionality still works after changes

Answer

Regression testing ensures that previously working functionality has not been broken by recent code changes or new features.

Question 3

In Test-Driven Development (TDD), what is the correct order of steps?

Accepted Answer

Write test, write code, refactor

Answer

TDD follows the Red-Green-Refactor cycle: write a failing test first, write code to pass it, then refactor.

Question 4

Which testing technique tests the software without knowledge of its internal structure?

Accepted Answer

Black-box testing

Answer

Black-box testing evaluates software behavior without any knowledge of internal implementation or source code.

Question 5

What is a 'test double' in software testing?

Accepted Answer

A generic term for objects that stand in for real objects during testing

Answer

A test double is a generic term for any object used in place of a real object for testing purposes, including mocks, stubs, and fakes.

Software Engineering Practice Test