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Variables in JavaScript are used to store data values.
Variables are declared using the 'var', 'let', or 'const' keywords.
Variables can store different types of data such as numbers, strings, arrays, objects, etc.
Variables can be reassigned with new values.
Variables are case-sensitive.
Example: var x = 5; let name = 'John'; const PI = 3.14;
The 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 continuously checks the call stack and the callback queue to see if there are any functions that need to be executed.
If the call stack is empty, the event loop will take a function from the callback queue and push it onto...
Event emitter in Node.js is a module that allows objects to emit and listen for events.
Event emitter is a built-in module in Node.js
It allows objects to emit named events that cause Function objects to be called
Example: const EventEmitter = require('events');
Example: const myEmitter = new EventEmitter();
Aggregation in MongoDB is a framework for performing data processing operations on documents within a collection.
Aggregation pipeline stages allow for data transformation, filtering, sorting, grouping, and more
Operators like $match, $group, $project, $sort, $limit, $skip are commonly used in aggregation
Aggregation results can be output to a new collection, returned inline, or used for further processing
Microservices are a software development technique where applications are composed of small, independent services that communicate with each other over a network.
Microservices break down a large application into smaller, loosely coupled services.
Each service is responsible for a specific function and can be developed, deployed, and scaled independently.
Communication between microservices is typically done through APIs ...
OOP stands for Object-Oriented Programming, a programming paradigm based on the concept of objects.
OOP focuses on creating objects that contain data and methods to manipulate that data.
The main concepts of OOP are encapsulation, inheritance, and polymorphism.
Encapsulation refers to bundling data and methods that operate on the data into a single unit.
Inheritance allows a class to inherit properties and methods from ano...
What people are saying about KocharTech
I applied via AmbitionBox and was interviewed in Aug 2024. There were 2 interview rounds.
KocharTech interview questions for popular designations
I applied via Referral and was interviewed in Apr 2024. There was 1 interview round.
Get interview-ready with Top KocharTech Interview Questions
Discussing a successful project or achievement
Start by providing background information on the project or achievement
Explain the goals and objectives of the project
Discuss the strategies and actions taken to achieve success
Highlight any challenges faced and how they were overcome
Share the results and impact of the project or achievement
Conclude by reflecting on key learnings and takeaways
I applied via Company Website and was interviewed before Apr 2021. There were 3 interview rounds.
Swiggy's process involves seamless online food ordering and delivery services.
Customers place orders through the Swiggy app or website.
Restaurants receive the orders and prepare the food.
Delivery partners pick up the orders and deliver them to customers.
Customers can track their orders in real-time.
Swiggy ensures timely delivery and customer satisfaction.
Delivery app connects customers with restaurants or stores for ordering food or products to be delivered to their location.
Customers browse through available restaurants or stores on the app
Customers place an order and pay through the app
Restaurants or stores receive the order and prepare it for delivery
Delivery drivers pick up the order and deliver it to the customer's location
Customers can track the delivery status i
I applied via Walk-in and was interviewed in Nov 2023. There were 3 interview rounds.
It was quite good . And very good questions are there in the test
OOPs concepts are principles that help in designing and implementing modular, reusable, and maintainable code.
Encapsulation: Bundling data and methods together to hide implementation details.
Inheritance: Creating new classes from existing ones to reuse code and establish a hierarchical relationship.
Polymorphism: Using a single interface to represent different forms or behaviors.
Abstraction: Simplifying complex systems ...
Encapsulation is the process of hiding internal implementation details and exposing only necessary information to the outside world.
Encapsulation helps in achieving data abstraction and data hiding.
It allows for better control over the data by preventing direct access to it.
Encapsulation promotes code reusability and maintainability.
Example: In object-oriented programming, classes encapsulate data and methods, providin...
I applied via AmbitionBox and was interviewed in Nov 2023. There were 3 interview rounds.
A greatly is a person who possesses exceptional skills, knowledge, or talent in a particular field.
A greatly is someone who stands out from others due to their outstanding abilities.
They have a deep understanding and expertise in their area of specialization.
Greatlys often achieve remarkable results and make significant contributions to their field.
They are highly respected and recognized by their peers and colleagues.
...
The duration of KocharTech interview process can vary, but typically it takes about less than 2 weeks to complete.
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