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Event Loop in JavaScript manages the execution of multiple tasks in a single-threaded environment.
Event Loop is responsible for handling asynchronous operations in JavaScript.
It continuously checks the call stack and the task queue, moving tasks from the queue to the stack when the stack is empty.
Tasks like setTimeout, setInterval, and AJAX requests are handled by the Event Loop.
Event Loop ensures that JavaScript remai...
Sharding in Node.js involves splitting a database into smaller parts to improve performance and scalability.
Sharding is a technique used to horizontally partition data across multiple servers or databases.
It helps distribute the load evenly and improves performance by allowing parallel processing of queries.
In Node.js, sharding can be implemented using libraries like MongoDB's sharding feature or custom sharding logic ...
Indexing in Node.js is a way to optimize data retrieval by creating indexes on specific fields in a database.
Indexing in Node.js can be done using libraries like Mongoose for MongoDB databases.
Indexes can improve query performance by allowing the database to quickly locate the requested data.
Example: Creating an index on a 'username' field in a user collection can speed up queries searching for a specific user.
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I appeared for an interview in Jul 2022.
Basic pattern program was given to. we have to solve it using a minimum number of loops(It doesn't matter whether it is nested or not).
A bit harder pattern program than the previous one, again same constraints as the last round.
I appeared for an interview before Aug 2016.
For loop is used for iterating over a range of values while for each loop is used for iterating over elements of an array.
For loop is used when the number of iterations is known beforehand.
For each loop is used when the number of iterations is not known beforehand.
For loop can be used with any iterable object.
For each loop can only be used with arrays and other iterable objects.
For loop uses an index variable to access...
posted on 19 Sep 2024
I applied via Company Website and was interviewed in Aug 2024. There were 2 interview rounds.
Very basic aptitude questions along with few coding questions
I appeared for an interview in May 2025, where I was asked the following questions.
I am proficient in several programming languages, each suited for different tasks and projects.
JavaScript: Used for web development, creating interactive front-end applications.
Python: Great for data analysis, machine learning, and scripting tasks.
Java: Commonly used for building enterprise-level applications and Android development.
C#: Utilized for developing Windows applications and game development with Unity.
SQL: E...
posted on 15 Apr 2024
I applied via Campus Placement
The basic question is related to profit percentage, time and distance
Yes, the database schema can be of various types such as relational, hierarchical, network, object-oriented, etc.
Relational database schema is the most common type, using tables to store data with relationships between them.
Hierarchical database schema organizes data in a tree-like structure.
Network database schema allows multiple relationships between records.
Object-oriented database schema stores data as objects with...
posted on 5 Aug 2024
BASIC DSA LIKE ARRAY AND STRING
System design for an electric charger app involves creating a user-friendly interface, integrating with payment systems, and ensuring efficient charging station management.
Design a user-friendly interface for users to locate and reserve charging stations
Integrate with payment systems for seamless transactions
Implement efficient charging station management to monitor availability and maintenance
Consider scalability for ...
Design diagram for a software developer role.
Use UML diagrams to show class relationships and interactions
Include components like classes, interfaces, relationships, and methods
Consider using tools like Lucidchart or draw.io for creating the diagram
posted on 5 Sep 2023
I applied via Naukri.com and was interviewed before Sep 2022. There were 2 interview rounds.
posted on 19 Jul 2024
I applied via Naukri.com and was interviewed in Jun 2024. There were 2 interview rounds.
React is a JavaScript library for building user interfaces.
React allows developers to create reusable UI components.
It uses a virtual DOM for efficient rendering.
React uses JSX, a syntax extension that allows mixing HTML with JavaScript.
State and props are used to manage data and pass information between components.
App was given to create
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HCL Infosystems
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