10+ Technology Intern Interview Questions and Answers

ROS1 is the first version of Robot Operating System, while ROS2 is the second version with improved features and capabilities.

• ROS1 is the original version of Robot Operating System, released in 2010.

• ROS2 is the newer version of Robot Operating System, with improvements in performance, security, and scalability.

• ROS2 supports more platforms and programming languages compared to ROS1.

• ROS2 has better real-time capabilities and communication protocols than ROS1.

A calculator code using OOP concepts

• Create a class for the calculator with methods for addition, subtraction, multiplication, and division

• Use encapsulation to protect data and ensure data integrity

• Implement inheritance to create specialized calculator classes like ScientificCalculator

• Utilize polymorphism to allow different calculator types to use the same interface

I have strong Java skills and experience working with Spring Boot.

• Proficient in Java programming language

• Experience developing applications using Spring Boot framework

• Familiar with building RESTful APIs and microservices

• Knowledge of dependency injection and inversion of control principles

• Hands-on experience with Spring Data JPA for database interactions

I am proficient in Java, Python, and SQL.

• Java

• Python

• SQL

LLMs can be connected with API systems by using authentication keys and endpoints.

• Generate authentication keys for LLMs to access API systems securely

• Identify and use the appropriate API endpoints for data exchange

• Implement error handling and data validation to ensure smooth communication

• Use tools like Postman for testing and debugging API connections

Learned various programming languages, problem-solving skills, teamwork, and time management.

• Studied programming languages such as Java, C++, and Python

• Developed problem-solving skills through coding assignments and projects

• Worked in teams on group projects to enhance collaboration and communication

• Managed time effectively to balance coursework, projects, and extracurricular activities

Join in SQL is used to combine rows from two or more tables based on a related column between them.

• Join is used to retrieve data from multiple tables in a single query

• Types of joins include inner join, left join, right join, and full outer join

• Join conditions are specified using the ON keyword and a related column between the tables

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column

A palindromic substring is a string that reads the same forwards and backwards.

• Use dynamic programming to find the longest palindromic substring.

• Start by considering each character as the center of a potential palindrome.

• Expand outwards from each center to check for palindromic substrings.

• Keep track of the longest palindrome found so far.

• Example: Input 'babad', Output 'bab' or 'aba'.

The question is asking for a variation of sorting an array containing 0s, 1s, and 2s.

• Use a three-way partitioning algorithm to sort the array in a single pass.

• Keep track of three pointers - low, mid, and high to partition the array.

• Example: Input array = [0, 1, 2, 1, 0], Output array = [0, 0, 1, 1, 2]

Object-oriented programming is a programming paradigm based on the concept of objects, which can contain data in the form of fields and code in the form of procedures.

• OOP is based on the concept of classes and objects

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

• Example: Inheritance allows a class to inherit attributes and methods from another class