Node js is an open-source and cross-platform used for executing JavaScript code outside of the browser. Node js allows developers to build networking tools and web servers through JavaScript and module collections that handle a variety of core functionalities. This programming language is initiated to extend the use of JavaScript in the web browser. Node js offers an event-driven non-blocking I/O model, making it an outstanding tool for building scalable and robust applications. Are you getting ready to grab a job as a Node JS developer? You can easily get access to the Node JS interview questions and thus you get rid of all confusions.