A common question in Selenium WebDriver technical interview questions don't miss this one. A testing tool called Selenium Remote Control (RC) enables you to create automated web application UI tests in any programming language for any HTTP website while utilizing any widely used JavaScript-capable browser.  Selenium RC works by injecting a JavaScript function called "Selenium" into the browser when a page is loaded. This function is then used to drive the browser and perform various actions, such as clicking links and filling out forms. The actions are controlled by a remote server, which receives commands from the test script and passes them to the browser.  Selenium RC was the first version of Selenium and was released in 2004. It is now deprecated and has been replaced by newer tools, such as Selenium WebDriver, which offer improved performance and better support for modern web browsers.  Despite being deprecated, Selenium RC is still used by some organizations and is a good option for those who are familiar with it and have existing test suites that use it. However, for new projects, it is generally recommended to use Selenium WebDriver or one of the other newer Selenium tools.