Innovate Labs Ar Vr Developer Interview Questions and Answers

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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You will get an assignment with an unrealistic deadline of 3 days within workdays only. github.com/wasserstoff-india Vision Mark Annotation suite repository

Q1. Set up an express app with Typescript.
Ans. 
Setting up an express app with Typescript
• Install necessary dependencies: npm install express @types/express typescript @types/node

• Create a tsconfig.json file with necessary configurations

• Set up your express app in a TypeScript file
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Q1. Resume shortlist
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5 coding questions (4 medium and 1 easy) on coderbyte.

Q1. Questions about previous jobs/internships and other HR-related questions.
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Q1. Based on the skills mentioned in my resume, and questions based on the project mentioned (the Interviewer asked to open my GitHub profile and asked questions on code written).
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Simple coding and scripting round

This round was in front of a panelist you have to code a basic application

Q1. This was system design round where db schema and application outline and logic to build it were asked
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Q1. Here behavioural question were asked by the product owner
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Q1. This is also a coding round where you have to code a small application related to the tech you have exp in
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Q1. Tell me about yourself
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Q1. We are you applied to this job
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Q1. Median of a stream
Ans. 
Finding the median of a stream of numbers as they are received
• Keep track of the numbers in a sorted data structure like a min heap and max heap

• Maintain balance between the two heaps to efficiently find the median

• If the total number of elements is odd, median is the middle element. If even, median is the average of two middle elements
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They will give you something to make in 2 hours time.

Q1. Easy they just ask about your resume stuff
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Q2. Introduction of yourself family and all
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Q3. Project you made explanation
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