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I applied via Naukri.com and was interviewed in May 2024. There was 1 interview round.
React hooks are functions that let you use state and other React features in functional components.
Allow functional components to have state and lifecycle methods
Replace class components with simpler functional components
Examples: useState, useEffect, useContext
Redux is a predictable state container for JavaScript apps, used to manage application state in a centralized store.
Redux helps manage the state of an application in a predictable way
It allows for a single source of truth for the state of the application
Redux is commonly used with React to manage the state of components
Actions are dispatched to update the state in Redux store
Reducers specify how the state changes in re
Yes, I have experience with file upload tasks. Files are saved in DB by storing the file path and retrieval is done by fetching the file path from the DB.
Used multer middleware in Node.js to handle file uploads
Saved file path in MongoDB using Mongoose schema
Retrieved file by querying the database for the file path
Implemented file upload functionality in a project using React for the front end
CRUD operations in MongoDB include create, read, update, and delete operations on documents in a collection.
Create: db.collection.insertOne()
Read: db.collection.find()
Update: db.collection.updateOne()
Delete: db.collection.deleteOne()
Aggregation is the process of combining data from multiple sources to provide a summary or overview.
Aggregation in databases involves grouping and summarizing data to provide insights.
In MongoDB, aggregation pipelines are used to process data and return computed results.
Examples of aggregation functions include sum, average, count, and group by.
They are used in MongoDB aggregation pipeline to perform various operations like joining, filtering, projecting, etc.
Used in MongoDB aggregation pipeline for data manipulation
Perform operations like joining, filtering, projecting, etc.
Help in combining data from multiple collections
Use $lookup to perform a left outer join between two collections
Developed a real-time chat application using Node.js with Socket.io for instant messaging functionality.
Implemented server-side logic using Node.js to handle incoming messages and broadcast them to all connected clients
Utilized Socket.io library to establish WebSocket connections for real-time communication
Integrated with MongoDB to store chat messages and user information
Implemented authentication and authorization me
I applied via Walk-in and was interviewed before Dec 2020. There were 3 interview rounds.
I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.
I applied via Campus Placement and was interviewed before Feb 2020. There were 6 interview rounds.
I applied via Company Website and was interviewed before Feb 2020. There was 1 interview round.
I applied via Walk-in and was interviewed before Sep 2019. There were 5 interview rounds.
I applied via Company Website and was interviewed in Oct 2020. There were 3 interview rounds.
Recursion is a process in which a function calls itself. Inheritance is a mechanism in OOP where a class inherits properties of another class. Heap is a region of memory used for dynamic memory allocation.
Recursion can be used to solve problems that can be broken down into smaller sub-problems.
Inheritance allows for code reuse and helps in creating a hierarchy of classes.
Heap is used for dynamic memory allocation in la...
Visio is a diagramming tool used to create flowcharts, diagrams, and other visual representations of data.
Start by selecting a template or creating a new document
Drag and drop shapes onto the canvas and connect them with lines or arrows
Add text, images, and other elements to enhance the diagram
Use the formatting tools to customize the appearance of the diagram
Save and export the diagram in various formats such as PDF o
I applied via Recruitment Consulltant and was interviewed before Apr 2021. There were 3 interview rounds.
Standard Aptitude questions
Based on strings and array
I applied via Naukri.com and was interviewed in Nov 2019. There were 5 interview rounds.
based on 1 interview
Interview experience
Software Developer Trainee
3
salaries
| ₹2.4 L/yr - ₹4.1 L/yr |
Infosys
TCS
Wipro
HCLTech