1) Different Locators in Selenium 2) Selenium Webdriver Architecture 3) TestNG Annotation. Listeners 4) Technical & Process challenges face in Selenium Automation 5) Python programs to reverse a String, Ques on Lists, Tuples, Set, Numbers, Strrings & Dictionaries etc., 6) Java Inheritence/ Polymorphism, Method Overloading /Method Overriding 7) Selenium WebDriver features: findElement()/ find Elements(), driver.quit(), driver.close() diffs, Waits in Selenium(Implicit Wait/Explicit Wait/ Fluent Wait). 8) Selenium Grid Know-how