Incedo Dotnet Developer interview questions

What is the difference between Dot net framework and dot net core, What version of dot net you have used. What is middleware? Explain Dependency injection and also the interviewer told me to share the screen and write the code for implementing the DI. How to handle security in Web API? What is Entity framework. Different approaches used in Entity framework. Explain them with example? Difference between Update , Add? How to increase performance while using code first in EF? What is microservices, difference between microservices and Monolithic Architecture? What are indexes and types of indexes in SQL server? Questions related to Indexes. Write a query to find the 2nd highest salary of an employee?