MERN Stack Interview Question and Answers
MERN Stack Interview Question and Answers: The MERN stack is a popular web development framework that consists of four key technologies: MongoDB, Express.js, React, and Node.js. MongoDB is a NoSQL database that allows for easy storage and retrieval of data in JSON-like format,
MERN Stack Interview Question and Answers: Express.js is a back-end web application framework that simplifies the development of server-side code. React is a front-end JavaScript library that facilitates the creation of dynamic user interfaces. Node.js is a runtime environment that allows for the execution of JavaScript code on the server-side. Together, these four technologies form the MERN stack, which provides a powerful and efficient way to develop full-stack web applications. The MERN stack is particularly well-suited for building scalable and robust applications that require real-time data processing and responsive user interfaces, Here we are Providing Important MERN Stack Interview Question and Answers.
MERN Stack Interview Question and Answers;
Question 1: What is MERN stack?
Answer: MERN stack is a web development stack comprising of four technologies: MongoDB, Express.js, React, and Node.js. It allows developers to create full-stack web applications using JavaScript on both the front-end and back-end.
Question 2: What is MongoDB?
Answer: MongoDB is a NoSQL document-oriented database that stores data in JSON-like format. It provides high scalability and flexibility for storing and retrieving data.
Question 3: What is Express.js?
Answer: Express.js is a lightweight back-end web application framework that allows developers to build web applications using Node.js. It provides easy-to-use APIs for handling HTTP requests, middleware for application-level functionality, and routing for building APIs.
Question 4: What is React?
Answer: React is a JavaScript library for building user interfaces. It provides a component-based architecture that allows developers to create reusable UI components that can be easily composed to build complex interfaces.
Question 5: What is Node.js?
Answer: Node.js is a JavaScript runtime environment that allows developers to execute JavaScript code on the server-side. It provides a rich set of built-in modules and libraries for building web applications and APIs.
Question 6: What are the advantages of using the MERN stack?
Answer: The MERN stack allows developers to use a single language (JavaScript) on both the front-end and back-end, which makes development faster and more efficient. It also provides a scalable and flexible architecture for building full-stack web applications that can handle real-time data processing and responsive user interfaces.
Question 7: How do you handle routing in Express.js?
Answer: Express.js provides a routing API that allows developers to define routes for handling HTTP requests. The router can be used to handle different HTTP methods (GET, POST, PUT, DELETE) and to handle dynamic parameters in the URL.
Question 8: How does React handle state management?
Answer: React provides a built-in mechanism for managing component state using the use State hook. It allows developers to create stateful components that can update their state and re-render in response to user input or changes in data.
Question 9: What is the role of Node.js in the MERN stack?Answer: Node.js provides the runtime environment for executing JavaScript code on the server-side. It allows developers to build back-end web applications and APIs using JavaScript, which provides a unified language and toolset for the entire stack
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