Web API that returns Hello World asynchronously in ASP.NET Core?

Question

I got this coding test for junior .NET Developer. I'm new just learning I've not touched anything about web API I just know a little bit of concept so Could you someone guide me how to create with the following requirement project that would be greatly appreciated.

Answer 1

Here are Project Requirements:
Create a Web API that returns “Hello World” asynchronously.
Use autofac for interface injection between the API (Sample.API)
and a mocked data layer (Sample.Infrastructure) using business Objects (Sample.Domain.Entities) and interfaces (Sample.Domain.Abstract).
Consume the API from a webpage (Sample.Presentation) using jQuery.
The result should show “hello world” 10x.
Thanks
Rabin