Related Topics Node JS Question 26 How to manage dependencies using npm in Node.js? Answer npm (short for Node Package Manager) is the default package manager for Node.js. It allows you to easily install and manage dependencies for your Node.js projects. Here’s how to manage dependencies using npm in Node.js: Create a package.json file for […]
Related Topics Node JS Question 21 What is a module in Node.js? Answer In Node.js, a module is a reusable piece of code that encapsulates related functionality and can be imported and used in other parts of an application. Modules in Node.js are designed to help developers organize and modularize their code, making it easier
Related Topics Node JS Question 16 How does the Node.js event-driven programming model handle errors and exceptions? Answer In the Node.js event-driven programming model, errors and exceptions are handled using a combination of event listeners and error handling functions. When an error occurs in a Node.js application, it emits an “error” event, which can be
Related Topics Node JS Question 11 Explain the single-threaded event loop model in Node.js and how it enables efficient server-side programming? Answer Sure, the single-threaded event loop model is a core concept in Node.js and enables efficient server-side programming by allowing Node.js to handle large numbers of concurrent requests with a low overhead. In a
Related Topics Node JS Question 6 How does Node.js handle I/O operations and what advantages does it provide compared to traditional servers? Answer Node.js handles I/O operations using an event-driven, non-blocking I/O model. In traditional servers, when a request comes in that requires I/O, such as reading data from a file or a database, the
Related Topics Node JS Question 1 Explain what Node.js is and its purpose? Answer Node.js is an open-source, cross-platform, server-side runtime environment built on the Google V8 JavaScript engine. It allows developers to run JavaScript on the server side, providing a powerful and efficient way to build scalable, real-time applications. The primary purpose of Node.js
Related Topics Data Structure Question 31 What is a Dijkstra’s algorithm and how is it used to find the shortest path in a graph? Answer Dijkstra’s algorithm is a well-known algorithm for finding the shortest path in a graph from a source vertex to all other vertices. It is a greedy algorithm that works by
Related Topics HTML Question 7 What is the purpose of the DOCTYPE declaration in an HTML document? Answer The DOCTYPE declaration in an HTML document tells the web browser which version of HTML the document is written in. It is placed at the very beginning of an HTML document, before the <html> tag. The DOCTYPE
Related Topics HTML Question 1 What is HTML and what is it used for? Answer HTML stands for Hypertext Markup Language. It is a markup language used for creating web pages and other information that can be displayed in a web browser. HTML uses a set of tags and attributes to define the structure and
