Infosys .net Interview Questions

2022-Jan

Position :SSE ,Skills : Asp.net Core, C#.net , Oops, Design Patterns ,Sql Server

1. How do you use dependency Injection in asp.net core ?
2. Can you please explain DI container service lifetime ?
3. Can you explain the concept of async programming in C# and give an example of how you have used it in a project? 
4. Can you write a sample Asynchronous programming code to serve the web api request ?
5. how you would implement security in an ASP.NET Core web application and how can you handle authentication and authorization ?
6. Can you give an example of how to implement a RESTful API in ASP.NET Core?
7. Can you walk me through how you would implement unit testing in an ASP.NET Core application using xUnit or MSTest ?
8. Can you discuss your experience with designing and implementing multithreaded applications in C#?
9. Can you give an example of using delegates in C#?
10. Can you write a sample piece of code to query a Employeecontext with dynamic parameters by using lambda expressions, let’s say I have dictionary variable
11. Eg:   Dictionary<string, string> employe= 
12.            new Dictionary<string, string>();
13.             employe.Add("EmpName", "Subhash");
14.             employe.Add("Department", "IT");
15.  
16.  Can you explain how do you implemented security for web API ?
17. Ans : I said like we implemented JWT tokens
18. Can you walk through the how JWT token works ? and how do you validate the token is expired or not ?
19. How do you identify from execution plan the query is not optimized ?