Hitachi Digital Services Reactjs Developer Interview Questions and Answers

Q1. Basics of Javascript
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Q2. Basics of React
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They asked hacker rank test

Q1. Routing concept
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Q2. React js coding question
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Basic React related questions

Q1. Basic reactjs Questions with some javascript coding snippets
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Q1. It was one on one round, primarily based on ReactJS, interviewer asked questions like HOC, Redux, context API etc, at the end interviewer gave me one logical question and wanted me to share the screen writ...read more
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Q1. This is also one 2 one round, primarily focused was JavaScript, interviewer asked many things about javascript, you should strong enough in core concepts of javascript. At last interviewer want me to write...read more
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Q1. You can consider this as a Last round, primarily focused was scrum. Interviewer asked few questions to check my attitude towards teams.
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Q1. This was telephonic round, where HR offer me a position in a company.
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Logical reasoning, grammar, and coding: two basic level questions.

Q1. Question on core Java
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Q2. Question on SQL and PLSQL
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Q3. Resume based question and on project
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Q1. Resume and project based question
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Q2. What do you like about your current company, and why do you want to join our organization?
Ans. 
I appreciate the collaborative team environment and innovative projects at my current company, and I am excited about the opportunities for growth and learning at your organization.
• Collaborative team environment fosters creativity and productivity

• Innovative projects challenge me to learn and grow

• Excited about the opportunities for growth and learning at your organization
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Test will be in hacker rank there would be a difficulty level between easy to medium

Q1. Question will be from data structure and easy to medium level of the programming laanguage question
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Q1. This is just to check your english ability
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Q1. Basic Java Question
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Q2. Spring Boot related questions
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Q1. Design a rest API and code it.
Ans. 
Design and code a REST API for a software developer interview.
• Define the endpoints and HTTP methods for the API (e.g. GET /users, POST /users)

• Implement authentication and authorization mechanisms (e.g. JWT tokens)

• Use proper status codes for responses (e.g. 200 OK, 401 Unauthorized)

• Include error handling and validation for input data

• Document the API using tools like Swagger or OpenAPI
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Q2. Questions related to JPA HIBERNATE SQL
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Q1. Discussion related to Last company Project and architecture level questions
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Q2. Write code to calculate frequency of a word using Stream API and lambda expressions
Ans. 
Calculate word frequency using Stream API and lambda expressions
• Use Stream API to convert array of strings to stream

• Use Collectors.groupingBy to group words by their frequency

• Use Collectors.counting to count the occurrences of each word
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