PlaySimple Games Software Development Engineer Interview Questions and Answers

Tasked with creating a to-do list application using the MERN stack.

Q1. What are the reasons for your choice of this company?
Ans. 
I chose this company for its innovative projects, strong company culture, and opportunities for growth.
• Innovative projects: I was impressed by the company's track record of developing cutting-edge software solutions.

• Strong company culture: I value a supportive and collaborative work environment, which I believe this company offers.

• Opportunities for growth: I see potential for career advancement and skill development wi
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Q1. Can you provide a detailed explanation of your experience with Node.js?
Ans. 
I have extensive experience with Node.js, including building backend APIs, real-time applications, and server-side rendering.
• Developed RESTful APIs using Express framework

• Implemented real-time features with Socket.io

• Utilized Node.js for server-side rendering with frameworks like Next.js

• Experience with npm package management and creating custom modules
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The problem statement was given to solve.

Q1. Explain liskov substitution principle with examples?
Ans. 
Liskov Substitution Principle states that objects of a superclass should be replaceable with objects of its subclasses without affecting the program's correctness.
• Subtypes must be substitutable for their base types.

• Derived classes should be able to extend the functionality of base classes without changing their behavior.

• Violating this principle can lead to unexpected behavior in the program.

• Example: If a Square class i...read more
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Q2. Importance of abstraction
Ans. 
Abstraction is crucial in software development to simplify complexity, improve readability, and promote reusability.
• Abstraction helps in hiding unnecessary details and focusing on essential features.

• It allows developers to work at a higher level of understanding without getting bogged down in implementation details.

• Abstraction promotes code reusability by creating modular and reusable components.

• It improves code readab...read more
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Q3. Importance of Unit testing in clean close
Ans. 
Unit testing is crucial in ensuring clean code by verifying the functionality of individual units of code.
• Unit testing helps in identifying bugs and errors early in the development process.

• It ensures that each unit of code works as expected in isolation.

• Unit tests act as documentation for the codebase, making it easier for new developers to understand and modify the code.

• It promotes code reusability and maintainability...read more
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Dsa problems dp and tress problem

Q1. Tell me about your self
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Q2. Projects and intership
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Q1. Types of filters
Ans. 
Types of filters include low-pass, high-pass, band-pass, and band-stop filters.
• Low-pass filter allows frequencies below a certain cutoff frequency to pass through.

• High-pass filter allows frequencies above a certain cutoff frequency to pass through.

• Band-pass filter allows a specific range of frequencies to pass through.

• Band-stop filter blocks a specific range of frequencies from passing through.
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Q1. Project Details
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Codechef easy level questions

Q1. Few domain related questions
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Q2. Virtual don vs actual Dom etc
Ans. 
Virtual DOM is a lightweight copy of the actual DOM used for efficient updates in web development.
• Virtual DOM is a concept used in web development to improve performance by minimizing actual DOM manipulations.

• Actual DOM refers to the real structure of the HTML elements on a webpage.

• Virtual DOM is a representation of the actual DOM in memory that gets updated when changes are made, and then efficiently updates the actua...read more
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Q3. Frontend related question as this was for frontend role
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Q1. Salary discussion
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Q1. Asked about technologies and coding
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Q2. Components in reactjs
Ans. 
Reactjs components are reusable, independent pieces of UI that can be composed together to build complex user interfaces.
• Components are the building blocks of a React application

• They can be class components or functional components

• Components can have their own state and lifecycle methods

• Components can be nested within other components to create a hierarchy

• Examples: Button component, Navbar component, UserList component
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Q3. Given url to fetch data from api
Ans. 
Use the url to make a request to the API and fetch data.
• Use a library like axios or fetch to make the HTTP request.

• Parse the response data to extract the necessary information.

• Handle any errors that may occur during the request.
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Q4. Cloud related scenerio questions
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The questions were asked from SQL and Python

General Topics - Mostly checking the communication

Q1. Technical stuffs that were in candidate's resume
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Q1. Mostly checking - attitude, reliability
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Simple question on maths

Q1. Explain OOPS concept
Ans. 
OOPS (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.
• OOPS focuses on creating objects that interact with each other to solve complex problems

• Key principles include encapsulation, inheritance, polymorphism, and abstraction

• Encapsulation ensures that the internal state of an object is hidden from the outside world

• Inheritance allows a class to inherit...read more
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Q2. Coding array questions
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