Understanding Web.config Hierarchy in SubFolders

Question

In my Visual Studio Web project is a Web.config at the root.

That Web.config file defines a network User and Password that is

Answer 1

I think I found the answer here:

10 Things ASP.NET Developers Should Know About Web.config Inheritance and Overrides

Specifically, it says of the ASP.NET Web.config:

The Web.config file for a specific ASP.NET application is located in the root directory of the application and contains settings that apply to the Web application and inherit downward through all of the subdirectories in its branch.