What is Selenium and list the tools available with Selenium? Which Selenium Tool is appropriate for testing? What are Selenium 1.0 & Selenium 2.0? What all the locators available in WebDriver? What all the programming languages supported to write test scripts in WebDriver? List the difference between Selenium RC and Selenium WebDriver? List the difference between findElement and findElements methods in WebDriver? Which is the fastest WebDriver? What is headless browser and why should I use it? Explain Browser Navigation in Selenium WebDriver. How to Capture Screenshot using Selenium WebDriver? What is Page Object Pattern and why should I use it? What is RemoteWebDriver? What is JSON Wire Protocol?