Selenium Testing Framework Research & Evidence-Based Practice 2

Question 1

Which research-backed pattern helps reduce test flakiness by separating UI locators from test logic in Selenium?

Accepted Answer

Page Object Model

Answer

The Page Object Model (POM) is an evidence-based design pattern that encapsulates locators and actions within page classes, reducing duplication and flakiness.

Question 2

Studies on Selenium test reliability show that implicit waits can cause which documented problem?

Accepted Answer

Slower overall suite execution due to cumulative wait time

Answer

Research shows implicit waits apply globally to every findElement call, causing cumulative slowdowns even when elements load quickly.

Question 3

Evidence from test automation research suggests that using CSS selectors over XPath in Selenium typically results in what?

Accepted Answer

Faster element lookup performance in most browsers

Answer

Benchmarks consistently show CSS selectors are faster than XPath for element location in Selenium because browsers' native CSS engines are highly optimized.

Question 4

Which Selenium WebDriver research finding supports using driver.quit() over driver.close() at test teardown?

Accepted Answer

quit() closes all windows and ends the session, preventing resource leaks

Answer

driver.quit() terminates the entire WebDriver session and releases all resources, while close() only closes the current window, risking orphaned processes.

Question 5

Research on Selenium Grid utilization recommends keeping node browser instances below what threshold to avoid memory degradation?

Accepted Answer

1 instance per node

Answer

Evidence-based Grid configuration recommends 1 browser instance per node core to avoid memory pressure and CPU contention that degrade test results.

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Selenium Testing Framework Research & Evidence-Based Practice 2