3 Minds Digital Intern Interview Questions and Answers for Freshers

Q1. What are synthetic Events?
Ans. 
Synthetic Events are events that are created by the browser to mimic real user events.
• Synthetic Events are used in React to handle events in a consistent manner across different browsers.

• They are created by React to wrap native browser events and provide additional functionality.

• Examples include onClick, onChange, and onSubmit events in React.
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Q2. What is event bubbling?
Ans. 
Event bubbling is the process where an event triggered on a child element is propagated up through its parent elements.
• Event bubbling allows a single event handler to be attached to a parent element, which will be triggered for all its children.

• When an event occurs on a child element, it first runs the event handlers on the child, then on its parent, and so on up the DOM tree.

• Event bubbling can be stopped using event.s
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Q1. Laravel framework question.
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Q1. Laravel framework question
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Easy leetcode data structure question

Q1. Write working code for calling a rest API, design rate limiter
Ans. 
Code for calling a REST API and designing a rate limiter
• Use a library like requests or axios to make the API call

• Implement a token bucket algorithm for rate limiting

• Set a maximum number of requests per second and queue excess requests

• Consider using a distributed rate limiter for scalability
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Q1. Design Database schema for instagram
Ans. 
Design a database schema for Instagram.
• Create tables for users, posts, comments, likes, and follows.

• Use primary and foreign keys to establish relationships between tables.

• Store user data such as username, email, and password securely.

• Include fields for post content, location, and timestamp.

• Track likes and comments on posts.

• Implement a notification system for follows and likes.

• Consider scalability and performance in the...read more
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Q1. What is difference between method and constructor
Ans. 
Methods are functions within a class that perform specific tasks, while constructors are special methods used to initialize objects.
• Methods can be called multiple times, constructors are called only once during object creation

• Methods have return types, constructors do not have return types

• Constructors have the same name as the class, methods have unique names
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Q2. Increment operator
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Q3. Architeture of jvm
Ans. 
JVM is the virtual machine that runs Java bytecode, providing platform independence.
• JVM stands for Java Virtual Machine

• It is responsible for interpreting Java bytecode and executing it on the underlying hardware

• JVM provides features like garbage collection, security, and memory management

• JVM has different components like Class Loader, Runtime Data Areas, Execution Engine, and Native Method Interface
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