Infosys Hadoop Developer Interview Questions and Answers

Standard quantitative questions accompanied by logical reasoning and related topics.

Q1. Asked about my projects.
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Q2. What are the basic Object-Oriented Programming (OOP) concepts, including polymorphism and inheritance?
Ans. 
OOP concepts include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Objects of different classes can be treated as objects of a common superclass.

• Abstraction: Hides complex implementation details and only shows the necessa
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Q3. Can you explain React, how it functions, and the related concepts?
Ans. 
React is a JavaScript library for building user interfaces.
• React allows developers to create reusable UI components.

• It uses a virtual DOM for efficient rendering.

• React uses a declarative approach to define how the UI should look based on the application state.

• It supports server-side rendering for improved performance.

• React can be used with other libraries like Redux for state management.
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Q4. About my final year project and how would you improve it?
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Q1. Can you introduce yourself and provide some information about your family?
Ans. 
I am a software engineer with a passion for coding and problem-solving. I come from a close-knit family with supportive parents and siblings.
• Software engineer with coding and problem-solving skills

• Close-knit family with supportive parents and siblings
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Q2. What are your strengths and weaknesses, and how are you addressing your weaknesses?
Ans. 
My strengths include problem-solving and teamwork, while my weaknesses are time management and public speaking. I am addressing my weaknesses by taking time management courses and practicing public speaking.
• Strengths: problem-solving, teamwork

• Weaknesses: time management, public speaking

• Addressing weaknesses: taking time management courses, practicing public speaking
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Q1. What's return statement in java
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Q2. What are get set methods
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Q3. What is the difference between an interface and an abstract class in Java?
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Q4. How do you implement a stack in Java using an array?
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Q5. What is the difference between a HashMap and a TreeMap in Java?
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Q1. Can you tell me about yourself?
Ans. 
I am a passionate software engineer with 5 years of experience in developing web applications using various technologies.
• 5 years of experience in software development

• Proficient in developing web applications

• Skilled in using various technologies

• Passionate about software engineering
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Q2. Can you explain one of the projects you completed during the academic year?
Ans. 
Developed a web-based student management system for tracking attendance and grades.
• Used HTML, CSS, and JavaScript for front-end development.

• Implemented backend functionality using PHP and MySQL database.

• Incorporated user authentication and authorization features for secure access.

• Tested the system thoroughly to ensure functionality and user-friendliness.
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Q3. What were some of the fundamental concepts of Artificial Intelligence that the interviewer inquired about during your interview as a Computer Science and Engineering - Artificial Intelligence and Machine L...read more
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Q4. What were your Achievements in the graduation years
Ans. 
Graduated with honors, completed multiple internships, and won coding competitions
• Graduated with honors in Computer Science

• Completed internships at XYZ Company and ABC Corporation

• Won first place in coding competition at university hackathon
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Q1. Asked about technical expertise and topic related question
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Q2. Notice period and salary discussion
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Q1. Technical in depth
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Q2. Salary discussion
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Q1. Notice period and salary discussion
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Q1. Can you tell me about yourself?
Ans. 
I am a passionate software engineer with a strong background in computer science and experience in developing innovative solutions.
• Completed a Bachelor's degree in Computer Science from XYZ University

• Proficient in programming languages such as Java, Python, and C++

• Worked on projects involving web development, database management, and machine learning

• Strong problem-solving skills and ability to work in a team environmen
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Q2. What was your role and contributions in your projects?
Ans. 
I was responsible for designing and implementing new features, fixing bugs, and optimizing performance in various projects.
• Designed and implemented new features based on client requirements

• Fixed bugs reported by QA team or end users

• Optimized performance by refactoring code or improving algorithms

• Collaborated with team members to ensure project deadlines were met
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Q3. Are you willing to relocate?
Ans. 
Yes, I am open to relocating for the right opportunity.
• I am open to relocating for the right job opportunity

• I am flexible and willing to move for the right position

• I have relocated for previous jobs and am comfortable with the process
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It was an aptitute round and 2 coding questions was there

Q1. Tell me about yourself
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Q2. We had discussion on projects than mentioned in my resume
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Q3. Then he moved to DSA question in which he told to how you will insert node in doubly linked list ,I answered all correctly he appreciated me also but after 5 min one person came and told you can go . I was...read more
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Round one is aptitude test , because based on the thinking

Coding is main because to create any websites or any development we need coding skills

We need this group discussion because we must speak in front of many members without fear.

Q1. HR is final round he is the one who select the students for the company by seeing their body language and way of talking
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Q2. Nothing you missed you have covered all the step wise processes in the above questions
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