Node Js Coding Interview Questions
Top Node.js Coding Interview Questions and Answers
Node Js Coding Interview Questions
Node.js coding interview questions are crucial in assessing a candidate's proficiency in asynchronous event-driven programming, a fundamental aspect of Node.js applications. They evaluate a candidate's ability to handle non-blocking I/O, concurrency, and event loops, ensuring they have a strong understanding of Node.js's non-traditional approach to JavaScript development. By testing these concepts, interviewers aim to identify individuals who can effectively build and maintain scalable and performant Node.js applications.
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1 - Explain Node.js event loop and how it works?
2) What are the different ways to create a server in Node.js?
3) How does Node.js handle asynchronous operations?
4) What is the difference between a callback and a promise?
5) What is the concept of streams in Node.js?
6) Explain the process of creating and consuming modules in Node.js.
7) How do you handle errors in Node.js?
8) What is the purpose of the package.json file?
9) What are the best practices for writing efficient Node.js code?
10) How can you improve the performance of a Node.js application?
11 - What are the security considerations when developing Node.js applications?
12) How does Node.js handle concurrency?
13) What are the key features of Node.js?
14) What are the advantages and disadvantages of using Node.js?
15) How does Node.js compare to other web application frameworks?
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- Course Overview
- Master the essential Node.js concepts and algorithms required for coding interviews. Explore data structures, system design, concurrency, testing, and debugging through hands-on exercises and mock interview questions.
- Course Description
- Master in-demand Node.js skills by tackling essential coding interview questions. This course covers data structures, algorithms, system design, and Node.js-specific concepts, preparing you to ace your next interview and showcase your proficiency in Node.js development.
- Key Features
- 1 - Comprehensive Tool Coverage: Provides hands-on training with a range of industry-standard testing tools, including Selenium, JIRA, LoadRunner, and TestRail.
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Benefits of taking our course
Functional Tools
1 - Node.js: A JavaScript runtime environment used to build server side applications. It enables the execution of JavaScript code outside of a web browser, making it suitable for building scalable and real time applications.
2) Express.js: A popular web framework for Node.js that provides a lightweight and flexible platform for creating web applications. It offers a range of features and capabilities, including routing, templating, and middleware support.
3) MongoDB: A NoSQL database that uses a document oriented data model. It is highly flexible and scalable, making it suitable for storing and managing complex and large datasets.
4) Mocha: A JavaScript test framework that allows developers to write and run unit tests for their code. It provides various assertion functions and hooks to easily test different aspects of an application.
5) Chai: An assertion library for Node.js that complements Mocha. It offers a wide range of assertion methods and styles, making it convenient to write clear and expressive tests.
6) Sinon: A JavaScript testing framework that helps developers mock, stub, and spy on functions and objects. It provides a set of tools to isolate and test specific parts of an application, ensuring reliability and maintainability.
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Cognizant Node Js Interview Questions
