Selenium Interview Questions
25. How do you handle browser notifications in Selenium WebDriver?
Answer: Use ChromeOptions or FirefoxProfile to disable or handle browser notifications.
26. What is the difference between getText() and getAttribute() in Selenium WebDriver?
Answer: getText() gets the visible text content of an element, while getAttribute(attribute_name) retrieves the value of the specified attribute.
27. How do you perform scrolling actions in Selenium WebDriver?
Answer: Use JavaScriptExecutor for scrolling actions:
import org.openqa.selenium.JavascriptExecutor;
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("window.scrollBy(0, 500);"); // Scroll down by 500 pixels
28. How do you verify if an element is displayed or hidden in Selenium WebDriver?
Answer: Use is_displayed() method to check if an element is visible or is_displayed() in case of invisibility.
29. What is the difference between driver.get() and driver.navigate().to()?
Answer: Both methods navigate to a URL, but navigate().to() is more robust as it allows you to navigate back and forward in history using navigate().back() and navigate().forward().
30. How do you simulate browser navigation using Selenium WebDriver?
Answer: Use navigate().back() and navigate().forward() to simulate browser back and forward navigation.
31. How do you execute JavaScript code using Selenium WebDriver?
Answer: Use execute_script() to execute JavaScript code from Selenium
import org.openqa.selenium.JavascriptExecutor;
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("alert('Hello, world!');");
32. How do you handle AJAX auto-suggestions in Selenium WebDriver?
Answer: Use explicit waits to wait for the auto-suggestion dropdown to appear and then interact with the suggestions.
33. What is the difference between find_element() and find_elements() in Selenium WebDriver?
Answer: find_element() returns the first matching element, while find_elements() returns a list of all matching elements.
34. How do you simulate mouse drag-and-drop actions in Selenium WebDriver?
Answer: Use the drag_and_drop(source, target) method from the ActionChains class.
35. How do you handle pop-up windows in Selenium WebDriver?
Answer: Use driver.window_handles to switch between pop-up windows.
36. How do you run Selenium tests in parallel?
Answer: Use TestNG’s parallel execution feature to run tests in parallel across multiple threads.
37. How do you handle synchronization issues in Selenium WebDriver?
Answer: Use explicit waits (WebDriverWait) with expected conditions to handle synchronization issues.
38. How can you handle SSL certificate errors in Selenium WebDriver for IE browser?
Answer: Use the ACCEPT_SSL_CERTS capability for the InternetExplorerDriver.
39. How do you handle broken links in Selenium WebDriver?
Answer: Use URLConnection or HttpClient in conjunction with WebDriver to check if links are valid in Java.
40. How do you verify if an element is enabled or disabled in Selenium WebDriver?
Answer: Use is_enabled() method to check if an element is enabled.
41. How do you handle browser window size in Selenium WebDriver?
Answer: Use driver.manage().window().setSize(new Dimension(width, height)) to set the browser window size in Java.
42. How can you capture network traffic in Selenium WebDriver?
Answer: Use browser developer tools or tools like BrowserMob Proxy with Selenium in Java.
43. How do you handle JavaScript errors in Selenium WebDriver?
Answer: Use browser developer tools or logging to capture JavaScript errors.
44. How do you handle duplicate test code in Selenium WebDriver?
Answer: Use inheritance or utility methods to reuse code.
45. How can you generate test reports in Selenium WebDriver?
Answer: Use TestNG’s in-built reporting or integrate with reporting libraries like ExtentReports or Allure.
46. How do you handle flaky tests in Selenium WebDriver?
Answer: Rerun failed tests, investigate the root cause, or use explicit waits to make tests more robust.
47. What is the difference between driver.getTagName() and driver.getTagName()?
Answer: getTagName() retrieves the HTML tag name of an element, while getTagName() retrieves the value of the specified attribute.
48. How do you handle browser-level notifications in Selenium WebDriver?
Answer: Use browser options to disable or handle notifications.
49. How can you handle SSL certificate errors in Selenium WebDriver for Chrome browser?
Answer: Use the --ignore-certificate-errors argument for ChromeOptions.
50. How do you handle broken images in Selenium WebDriver?
Answer: Use requests or urllib in conjunction with WebDriver to check if images are valid.
Selenium Interview Questions | Conclusion
Preparing for a Selenium SDET role in an IT company requires a solid understanding of Selenium WebDriver concepts and best practices. By mastering the top 50 interview questions and their corresponding answers provided above, students can enhance their knowledge and boost their confidence in the interview process. Additionally, hands-on experience with Selenium WebDriver and real-world projects will significantly contribute to a successful interview outcome.
Aspiring SDETs should practice writing efficient and maintainable test scripts, implement Page Object Model (POM) design patterns, and be familiar with the TestNG test management framework.
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