node js Interview Questions for Fresher
Essential Node.js Interview Questions for Freshers
node js Interview Questions for Fresher
Interview questions for Node.js freshers explore their understanding of the framework's key concepts, such as event-driven architecture, callbacks, and modules. By asking about syntax, data handling, and error management, interviewers assess the candidate's proficiency in using Node.js to build scalable, real-time applications. These questions help identify candidates with a strong grasp of the technology's fundamentals, enabling them to contribute efficiently to Node.js development projects.
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1 - What is Node.js?
Node.js is a JavaScript runtime environment that allows you to write server side and networking applications.
2) Why use Node.js?
Node.js is popular because it's easy to learn, scalable, and fast.
3) What are the key features of Node.js?
Asynchronous, non blocking I/O
Event driven architecture
Single threaded with event loop
4) What is the Node.js event loop?
The event loop is a central concept in Node.js. It is responsible for processing events and executing callbacks.
5) What is the difference between synchronous and asynchronous code?
Synchronous code executes synchronously, meaning that it blocks the event loop. Asynchronous code executes asynchronously, meaning that it does not block the event loop.
6) What is a module in Node.js?
A module is a JavaScript file that can be imported into other JavaScript files.
7) What is the CommonJS module system?
The CommonJS module system is a module system used by Node.js. It uses the require() function to import modules.
8) What is the difference between a library and a framework?
A library provides a set of functions that can be used in your code. A framework provides a set of tools and conventions that can be used to structure your code.
9) What are some popular Node.js frameworks?
Express
Hapi
Koa
10) What are some popular Node.js libraries?
Lodash
Moment
Request
11 - What is the difference between a GET and a POST request?
A GET request is used to retrieve data from a server. A POST request is used to send data to a server.
12) What is REST?
REST is a set of architectural principles for designing web APIs.
13) What is the difference between a client and a server?
A client is a computer that requests data from a server. A server is a computer that provides data to clients.
14) What is JSON?
JSON is a text based data format used to represent data.
15) What is the difference between a buffer and a string?
A buffer is a binary data type. A string is a sequence of characters.
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- Course Overview
- This course covers the fundamental concepts and core features of Node.js, essential for job interviews. It provides a comprehensive overview of the JavaScript runtime environment, including its architecture, event-driven model, and asynchronous programming capabilities. By focusing on questions commonly encountered in interviews for Node.js freshers, the course aims to prepare learners with the necessary knowledge and confidence to succeed in their job applications.
- Course Description
- This course provides a comprehensive guide to the commonly asked Node.js interview questions for freshers. It covers topics such as the Node.js ecosystem, core concepts, asynchronous programming, HTTP and file handling, and project-related questions. By completing this course, participants will gain a thorough understanding of the essential concepts and techniques required to succeed in Node.js interviews.
- 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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- 9) Career Support: Provides resources and support for applying learned skills to real-world job scenarios, including resume building and interview preparation.
- 10) Up-to-Date Content: Ensures that course materials reflect the latest industry standards and tool updates.
Benefits of taking our course
Functional Tools
1 - Node.js: A runtime environment for building and executing JavaScript applications outside of a browser.
2) Express.js: A web application framework for Node.js that provides a robust set of features for creating web applications, including routing, middleware, and templating.
3) MongoDB: A document oriented database that stores data in JSON like documents, making it a flexible and scalable option for storing data in a Node.js application.
4) Mongoose: An object data modeling (ODM) library for Node.js that provides a convenient way to interact with MongoDB and map data to JavaScript objects.
5) Chai: An assertion library for Node.js that provides a wide range of assertions for testing the expected behavior of code.
6) Mocha: A test framework for Node.js that allows developers to easily write and run tests to ensure the correctness of their code.
Training Program for Students:
- Comprehensive training on the fundamentals of Node.js, Express.js, MongoDB, Mongoose, Chai, and Mocha.
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- * Mentorship from experienced Node.js developers to guide and support students throughout the training.
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