KPIT Technologies Interview Questions and Answers

To start a React project with a Dotnet Core backend, set up the frontend and backend separately and then connect them using API calls.

• Set up a new React project using create-react-app

• Create a new Dotnet Core project for the backend

• Implement API endpoints in the Dotnet Core backend to communicate with the React frontend

• Use tools like Axios or Fetch in React to make API calls to the backend

• Ensure CORS is configured properly to allow communication between frontend and backend

Polymorphism allows objects to be treated as instances of their parent class, enabling flexibility and reusability in code.

• Polymorphism allows a parent class to be used as a reference to a child class object

• It enables methods in different classes to have the same name but different implementations

• Example: Animal class with methods like eat() can be inherited by Dog and Cat classes with their own eat() implementations

I will escalate the issue to a supervisor or higher level of support for further assistance.

• Escalate the issue to a supervisor or higher level of support

• Clearly communicate the situation and steps taken to the customer

• Apologize for the inconvenience and assure the customer that their issue will be resolved

OLAP is used for analyzing historical data while OLTP is used for managing real-time transactional data.

• OLAP stands for Online Analytical Processing, used for data analysis and reporting.

• OLTP stands for Online Transactional Processing, used for managing real-time transactional data.

• OLAP databases are optimized for read-heavy workloads and complex queries.

• OLTP databases are optimized for write-heavy workloads and simple queries.

• OLAP databases are typically used in data warehou...read more

Marshalling is the process of converting Java objects into a data format like JSON or XML, while unmarshalling is the reverse process.

• Marshalling is used to serialize Java objects into a format that can be easily stored or transmitted.

• Unmarshalling is used to deserialize data back into Java objects.

• Marshalling and unmarshalling are commonly used in web services to convert data between different systems.

• Example: Converting a Java object into JSON using a library like Jackson f...read more

Viewmodel is a design pattern that separates the data of an application from the UI logic.

• Viewmodel stores and manages UI-related data in a lifecycle-conscious way.

• It survives configuration changes and is not destroyed when the UI is destroyed.

• Viewmodel is typically used in conjunction with LiveData to update the UI when the data changes.

• It helps in keeping the UI logic separate from the UI components, making the code more maintainable and testable.

Backend architecture for RestAPI involves designing the structure and components of the server-side application to handle HTTP requests and responses.

• Use a framework like Express.js for handling routing and middleware

• Implement data storage using a database like MongoDB or MySQL

• Utilize authentication and authorization mechanisms for secure access

• Optimize performance by caching data and using asynchronous operations

• Consider scalability by using load balancers and microservices

Auth0 is a popular authentication and authorization platform for developers.

• Set up an Auth0 account and create an application

• Configure authentication settings in the application dashboard

• Integrate Auth0 SDK into your application code

• Implement login and logout functionality using Auth0 SDK methods