What are the correct Default Handler Mappings for ASP.Net, ASP.Net MVC and WCF Services hosted on IIS 7.5 .Net Framework 4.0 on Windows 7 (PRO)?

Out of a team of 8 developers who installed ASP.Net MVC 3/4 only 1 developer could get a basic ASP.Net MVC 3 Internet application to work under the Default Web Site in IIS 7.5 without changing the Handler Mappings, none of the team could get a second Website with the same site to work with the site sirectory located in a sub directory of the root website. inetpub/wwwroot/site

Below are three of the Handler Mappings set in IIS 7.5 all are different and have not been changed by the developers.

What is the best way to define the required settings as Defaults and ensure all workstations have the same configurations applied without setting them in the Website Web.Config file?

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