Excellence Technologies React Developer Interview Questions and Answers

Q1. They ask me about my previous job description details and education details
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Q2. About carrier goals
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Q3. About my responsibility in side the current company
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Q1. They ask me about core concept of react js and next js
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Q2. Ask me about core concepts of mongo Db and Node js
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Q1. They told me about company curriculum, goals and ethics
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Q1. What is debugging
Ans. 
Debugging is the process of identifying and fixing errors or bugs in software code.
• Identifying and isolating issues in the code

• Using tools like breakpoints and print statements to track down bugs

• Fixing errors to ensure the code runs correctly

• Testing the code to verify that the bugs have been resolved
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Q2. How debugging can be achieved
Ans. 
Debugging can be achieved by identifying and fixing errors in the code.
• Use debugging tools like breakpoints to pause the code execution and inspect variables

• Review the code logic and look for syntax errors or logical mistakes

• Utilize logging to track the flow of the program and identify issues

• Test the code with different inputs to reproduce and isolate the bugs

• Collaborate with team members to get fresh perspectives on t
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Q3. Tell me about Yourself
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It was js coding and react native related questions.

Q1. It was technical skills of Android and iOS application related react native
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Q1. It was discussed about your career and judge our professional career.
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Some question basis on JavaScript are asked in google form.

Q1. Interviewer give some links from Freecodecamp. Interviewer give some time for solving question you need to pass the all test cases.
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Q2. Wordblank , Data Algorithm que
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Q1. Mainly the react questions was asked Functions API Hooks
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Q1. Custom hook implementation
Ans. 
Custom hooks in React are reusable functions that contain logic shared between components.
• Custom hooks start with 'use' keyword (e.g. useState, useEffect)

• They can be used to share logic like fetching data, managing state, or subscribing to events

• Example: Custom hook for fetching data from an API can be used in multiple components
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Q1. Javascript basic questions, React Native interview questions
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Q1. Clone a Todo Application UI using ReactJS, Sass
Ans. 
Clone a Todo Application UI using ReactJS, Sass
• Create a new ReactJS project using create-react-app

• Design the UI using Sass and implement it in ReactJS

• Use state and props to manage the todo list

• Add functionality to add, delete and mark tasks as complete

• Implement local storage to persist data

• Test the application thoroughly
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Q2. Explain the order of specifity in CSS classes, elements, ids, etc
Ans. 
Explanation of CSS specificity hierarchy
• Inline styles have the highest specificity

• IDs have higher specificity than classes and elements

• Multiple selectors with the same specificity are resolved by the order in which they appear in the stylesheet

• The universal selector (*) has the lowest specificity
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This round was more focused on the problem solving. 2 coding questions were asked. The round was for an hour

Q1. How does Server-Side Rendering work?
Ans. 
Server-Side Rendering (SSR) is the process of rendering web pages on the server and sending the HTML to the client.
• SSR improves website performance and SEO by reducing load times and providing search engines with fully rendered pages.

• React provides a library called ReactDOMServer that allows developers to render React components on the server.

• SSR requires a server-side framework or library, such as Next.js or Gatsby, t...read more
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