Selenium WebDriver Technology & Digital Applications 3 — Questions and Answers
Question 1: In Selenium WebDriver, what is the purpose of the WebDriverWait class?
- To wait for a specific condition before proceeding with the next step (Correct answer)
- To pause test execution for a fixed number of seconds
- To wait until the page title changes
- To set the implicit wait globally for all elements
Correct answer: To wait for a specific condition before proceeding with the next step
WebDriverWait implements explicit waits, polling at intervals until a specified ExpectedCondition is met or the timeout expires.
Question 2: What does the CSS selector 'input[type="submit"]' target in Selenium?
- All input elements with type attribute equal to submit (Correct answer)
- All submit buttons including <button> tags
- The first input element on the page
- An input element with the class name 'submit'
Correct answer: All input elements with type attribute equal to submit
The CSS selector input[type='submit'] matches any <input> element whose type attribute is exactly 'submit'.
Question 3: Which HTTP status code does Selenium Grid Hub return when a requested browser capability is unavailable?
- Selenium throws a SessionNotCreatedException, not a direct HTTP status (Correct answer)
- 404 Not Found
- 503 Service Unavailable
- 400 Bad Request
Correct answer: Selenium throws a SessionNotCreatedException, not a direct HTTP status
When no node on the Grid can fulfill the requested capabilities, Selenium throws a SessionNotCreatedException rather than exposing a raw HTTP status to the test code.
Question 4: What is the correct way to handle a browser alert dialog that asks for user input in Selenium?
- driver.switchTo().alert().sendKeys('input') then .accept() (Correct answer)
- driver.findElement(By.id('alert')).sendKeys('input')
- driver.switchTo().alert().setText('input')
- driver.alert().type('input')
Correct answer: driver.switchTo().alert().sendKeys('input') then .accept()
After switching to the alert, sendKeys() types the desired input and accept() confirms the prompt dialog.
Question 5: What is the difference between driver.close() and driver.quit() in Selenium WebDriver?
- close() closes only the current window; quit() closes all windows and ends the session (Correct answer)
- close() ends the entire session; quit() closes only the current window
- They are identical in behavior
- close() kills the browser process; quit() sends a graceful shutdown signal
Correct answer: close() closes only the current window; quit() closes all windows and ends the session
driver.close() closes only the currently focused browser window, while driver.quit() terminates the entire WebDriver session and closes all associated windows.
Question 6: Which Selenium locator strategy uses an XML path expression to find elements?
- By.xpath() (Correct answer)
- By.cssSelector()
- By.id()
- By.linkText()
Correct answer: By.xpath()
By.xpath() uses XPath expressions to navigate the DOM tree and locate elements based on their attributes, hierarchy, or text content.
Question 7: In Selenium WebDriver, what does JavascriptExecutor allow testers to do?
- Execute arbitrary JavaScript code in the browser context (Correct answer)
- Intercept browser network requests
- Inject CSS styles into the page
- Access browser cookies directly
Correct answer: Execute arbitrary JavaScript code in the browser context
JavascriptExecutor provides the executeScript() and executeAsyncScript() methods to run JavaScript directly in the browser from your test code.
Selenium WebDriver Technology & Digital Applications 3
In Selenium WebDriver, what is the purpose of the WebDriverWait class?