Testing / Selenium Interview questions

How do you launch a browser using Selenium WebDriver?

Launching a browser means instantiating the driver class for that browser, which starts the matching driver executable and opens a fresh browser session.

WebDriver driver = new ChromeDriver();
driver.get("https://example.com");
// ... test steps ...
driver.quit();

Browser-specific Options classes (ChromeOptions, FirefoxOptions) configure things like headless mode, window size, or custom capabilities before the session starts:

ChromeOptions options = new ChromeOptions();
options.addArguments("--headless=new");
WebDriver driver = new ChromeDriver(options);

Calling driver.quit() at the end is important - it closes every window belonging to that session and terminates the underlying driver process, which prevents orphaned browser processes from accumulating across test runs.

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Browser-specific launch settings like headless mode are configured via: Options classes such as ChromeOptions

✓ Correct! Well done.

Editing the driver executable's source code

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The By class

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Failing to call driver.quit() can result in: Faster subsequent tests

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Orphaned browser processes accumulating over time

✓ Correct! Well done.

No effect whatsoever

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