Selenium WebDriver Quality Control & Assurance 5

Question 1

In Selenium QA, what is the key benefit of using a headless browser mode for test execution in CI?

Accepted Answer

It runs faster and does not require a display server, reducing CI infrastructure needs

Answer

Headless mode (e.g., Chrome --headless) eliminates the need for a GUI environment, making tests faster and easier to run on CI servers.

Question 2

What is the quality assurance purpose of end-to-end (E2E) Selenium tests compared to unit tests?

Accepted Answer

E2E tests validate complete user workflows across all integrated layers of the application

Answer

E2E tests exercise the full application stack from browser to database, validating real user scenarios that unit tests cannot cover.

Question 3

Which strategy should a QA engineer use when a Selenium test consistently fails only in CI but passes locally?

Accepted Answer

Investigate environment differences such as screen resolution, browser version, and timing

Answer

CI-local discrepancies are usually caused by headless rendering differences, slower CI machines, or different browser versions requiring targeted fixes.

Question 4

What does the concept of 'test debt' mean in a Selenium automation context?

Accepted Answer

The accumulation of unmaintained, skipped, or low-quality tests that slow future development

Answer

Like technical debt, test debt refers to deferred quality work—ignored flaky tests or outdated scripts—that compounds over time.

Question 5

In Selenium QA, what is the purpose of a test environment configuration matrix?

Accepted Answer

To document all browser, OS, and device combinations the application must be validated against

Answer

A configuration matrix ensures systematic cross-browser and cross-platform coverage by explicitly listing all combinations to test.

Selenium WebDriver Practice Test

Selenium WebDriver Practice Test

Selenium WebDriver Quality Control & Assurance 5