DevRepublic Interview Questions and Answers

Q1. What is Event Loop
Ans. 
Event Loop is a mechanism in JavaScript that allows for asynchronous operations to be executed in a non-blocking way.
• Event Loop is responsible for handling asynchronous operations in JavaScript.

• It allows for tasks to be queued and executed in a non-blocking manner.

• Event Loop continuously checks the call stack and the task queue, moving tasks from the queue to the stack when the stack is empty.

• Example: setTimeout() func...read more
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Q2. Event Loop in Node js
Ans. 
Event Loop in Node.js manages asynchronous operations by executing callback functions when certain events occur.
• Event Loop is a mechanism that allows Node.js to perform non-blocking I/O operations.

• It continuously checks the Call Stack for any functions that need to be executed, and the Callback Queue for any callback functions that need to be executed.

• It prioritizes the execution of I/O operations and callback function...read more
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Q3. Features of Node js
Ans. 
Node.js is a runtime environment that allows you to run JavaScript on the server side.
• Uses non-blocking, event-driven architecture for high performance

• Allows for building scalable network applications

• Has a large ecosystem of open-source libraries and frameworks like Express.js

• Can be used for real-time web applications with technologies like Socket.io
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Q4. React Js feature and questions
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Q5. Mongodb basic questions
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Asked me to build a front end and backend prject

Q1. Had a chit chat with Technical Head and Lead Developer and asked basic questions about event emiters , sharding , replica set etc etc
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Q1. Your strengths ?
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Q2. Your weakness ?
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