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Node.js is a runtime environment that allows you to run JavaScript code outside of a web browser.
Node.js is built on Chrome's V8 JavaScript engine.
It uses an event-driven, non-blocking I/O model.
Node.js is commonly used for building server-side applications.
It has a large ecosystem of open-source libraries and frameworks like Express.js.
Event loop is a mechanism that allows a program to efficiently handle multiple events or tasks concurrently.
Event loop is commonly used in asynchronous programming to manage tasks that may take varying amounts of time to complete.
It continuously checks for events or tasks in a queue and executes them one by one.
Event loop helps prevent blocking of the main thread by allowing non-blocking execution of tasks.
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Callback is a function passed as an argument to another function to be executed later, while a promise is an object representing the eventual completion or failure of an asynchronous operation.
Callback is used in traditional asynchronous programming, while promises are used in modern asynchronous programming.
Callbacks can lead to callback hell or pyramid of doom, while promises provide better readability and error hand...
Middlewares in Node.js are functions that have access to the request and response objects, and can modify or terminate the request-response cycle.
Middlewares are functions that are executed in the middle of the request-response cycle.
They can perform tasks like parsing request data, logging, authentication, etc.
Middlewares can be added using app.use() method in Express framework.
Example: app.use(bodyParser.json()) to p
Event emitter is a pattern used to handle and respond to events in software development.
Event emitter is a design pattern commonly used in Node.js for handling events.
It allows objects to subscribe to events and be notified when those events occur.
Event emitter is often used for asynchronous programming and decoupling components.
Example: EventEmitter class in Node.js can be used to create custom events and handle them.
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Easy and medium porblems are asked
Easy and medium problem are asked
I applied via Walk-in and was interviewed in Jan 2024. There were 4 interview rounds.
Basic aptitude questions
Electric based vehicle vs petrol based vehicle
I applied via campus placement at BRACT's Vishwakarma Institute of Information Technology, Pune and was interviewed before Aug 2023. There were 2 interview rounds.
I am a software engineer with 5 years of experience in developing web applications using Java, Spring, and Angular.
5 years of experience in software development
Proficient in Java, Spring, and Angular
Strong problem-solving skills
Experience working in Agile development environment
I was interviewed before Feb 2024.
I applied via Referral and was interviewed before Mar 2020. There were 3 interview rounds.
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