Hughes Systique Corporation Mean Stack Developer Interview Questions and Answers

It included mcqs and multiple coding questions.

Q1. Yours technical skillls related questions
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Q2. Managerial questions
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Q1. What are React Queries?
Ans. 
React Queries are a library for managing server state in React applications.
• React Queries provide a way to fetch and cache data from an API in React components.

• They offer features like caching, background fetching, and automatic refetching.

• React Queries can handle complex data fetching requirements, such as pagination and infinite scrolling.
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Q2. Can useEffect() hook run twice?
Ans. 
Yes, useEffect() hook can run twice under certain conditions.
• useEffect() hook can run twice if the dependencies array changes between renders.

• This can happen if the dependencies array contains values that change frequently.

• For example, if a state variable is included in the dependencies array and it is updated in the component, useEffect() will run again.
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Building small UI screen application in 1 hr for frontend developer

Q1. Graph traversal question
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Q2. React js questions
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Q3. Javascript output guessing question
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Q1. Basics on Javascript,Html,CSS
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Q2. Implementation of fetch api on sandbox
Ans. 
Using fetch API to make requests to a sandbox environment for testing purposes.
• Use the fetch function to make HTTP requests to the sandbox URL

• Handle the response using promises and the .then() method

• Set the appropriate headers and request method for the API endpoint

• Parse the response data using JSON methods if needed
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Q1. Define Object-oriented programming
Ans. 
Object-oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of OOP.

• Example: In Java, a class 'Car' can have attributes like 'color' and 'model', and methods like 'drive' and 'stop'.
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Q2. What is Default method in Java?
Ans. 
Default method in Java is a method defined in an interface with a default implementation.
• Introduced in Java 8 to allow adding new methods to interfaces without breaking existing implementations

• Default methods are declared with the 'default' keyword

• They can be overridden in implementing classes if needed
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As a recent college graduate, I am actively seeking employment opportunities where I can effectively apply my
skills. Currently pursuing a Bachelor of Engineering in Artificial Intelligence and Machine Learning, I strive to push
my limits to explore new possibilities and acquire additional skills. Aspiring to work in a growth-oriented
environment where I can achieve excellence under existing working conditions, and contribute to the goals of the
organization.

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Array duplicates and burn binary tree

Q1. Project specific
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