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Node Js architecture is based on event-driven, non-blocking I/O model.
Event loop handles all I/O operations asynchronously
Single-threaded event loop allows for high scalability
Modules and packages can be easily added through NPM
Uses V8 engine for efficient JavaScript execution
Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.
Hoisting applies to variable declarations and function declarations
Variable declarations are hoisted but not their values
Function declarations are fully hoisted
Function expressions are not hoisted
Hoisting can lead to unexpected behavior and bugs
Middleware is a software layer that sits between the application and the server, allowing for additional functionality to be added.
Middleware functions are executed sequentially, and can modify the request and response objects.
Common middleware includes body-parser, cookie-parser, and express-session.
Custom middleware can be created to add specific functionality to an application.
Middleware can be used for authent...
Middlewares are functions that have access to the request and response objects in Node.js, allowing for additional functionality to be added to the server.
Middlewares can be used to perform tasks like authentication, logging, error handling, etc.
They are executed in the order they are defined in the code.
Examples of middlewares include body-parser for parsing incoming request bodies, morgan for logging HTTP reques...
Node.js is a runtime environment that allows JavaScript code to run on the server side.
Node.js uses an event-driven, non-blocking I/O model, making it lightweight and efficient.
It uses the V8 JavaScript engine from Google Chrome to execute code.
Node.js allows developers to use JavaScript for both client-side and server-side development.
It has a large ecosystem of libraries and frameworks, such as Express.js for bu...
Event Emitter is a class in Node.js that allows objects to emit and listen for events.
Event Emitter is a core module in Node.js that provides an implementation of the observer pattern.
It allows multiple functions to be attached to a single event, which can be triggered synchronously or asynchronously.
Example: const EventEmitter = require('events');
Example: const myEmitter = new EventEmitter();
Example: myEmitter.on...
I appeared for an interview in Oct 2021.
Round duration - 60 minutes
Round difficulty - Easy
Technical Interview round that lasted for around 60 minutes. Questions were based on Node JS concepts.
Node.js is a runtime environment that allows JavaScript code to run on the server side.
Node.js uses an event-driven, non-blocking I/O model, making it lightweight and efficient.
It uses the V8 JavaScript engine from Google Chrome to execute code.
Node.js allows developers to use JavaScript for both client-side and server-side development.
It has a large ecosystem of libraries and frameworks, such as Express.js for buildin...
Middlewares are functions that have access to the request and response objects in Node.js, allowing for additional functionality to be added to the server.
Middlewares can be used to perform tasks like authentication, logging, error handling, etc.
They are executed in the order they are defined in the code.
Examples of middlewares include body-parser for parsing incoming request bodies, morgan for logging HTTP requests, a...
Event Emitter is a class in Node.js that allows objects to emit and listen for events.
Event Emitter is a core module in Node.js that provides an implementation of the observer pattern.
It allows multiple functions to be attached to a single event, which can be triggered synchronously or asynchronously.
Example: const EventEmitter = require('events');
Example: const myEmitter = new EventEmitter();
Example: myEmitter.on('eve...
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
I applied via Naukri.com and was interviewed in Oct 2021. There was 1 interview round.
Node Js architecture is based on event-driven, non-blocking I/O model.
Event loop handles all I/O operations asynchronously
Single-threaded event loop allows for high scalability
Modules and packages can be easily added through NPM
Uses V8 engine for efficient JavaScript execution
Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.
Hoisting applies to variable declarations and function declarations
Variable declarations are hoisted but not their values
Function declarations are fully hoisted
Function expressions are not hoisted
Hoisting can lead to unexpected behavior and bugs
Middleware is a software layer that sits between the application and the server, allowing for additional functionality to be added.
Middleware functions are executed sequentially, and can modify the request and response objects.
Common middleware includes body-parser, cookie-parser, and express-session.
Custom middleware can be created to add specific functionality to an application.
Middleware can be used for authenticati...
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I applied via Campus Placement and was interviewed before Sep 2021. There were 4 interview rounds.
Prepare normal for aptitude - maths, quant, analytic
My GD topic was Is internet good for students or not
I didn't attempt this as I was noob back in third year Engg
I applied via Job Portal and was interviewed in May 2021. There was 1 interview round.
I applied via Campus Placement and was interviewed before Apr 2021. There were 2 interview rounds.
Aptitude, logical , reasoning, verbal
I applied via Naukri.com and was interviewed before Sep 2019. There were 6 interview rounds.
Developed a web-based project management tool for a startup
Used React for the frontend and Node.js for the backend
Implemented user authentication and authorization using JWT
Integrated with third-party APIs such as Trello and Slack
Implemented real-time updates using WebSockets
Deployed on AWS using EC2 and RDS
I am a software engineer with experience in developing web applications and mobile apps.
Proficient in programming languages such as Java, Python, and JavaScript
Skilled in using frameworks like React, Angular, and Spring Boot
Experienced in working with databases such as MySQL and MongoDB
Familiar with Agile development methodologies and DevOps practices
My dream is to build innovative software solutions that positively impact people's lives.
Developing cutting-edge technology
Creating user-friendly interfaces
Solving complex problems
Collaborating with talented individuals
Making a difference in society
Continuous learning and growth
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