ASP.Net 2.0 Interview Questions

My organization went through the approval process of supporting the .NET Framework 2.0 in production. Do we need to go through the same process all over again for the .NET Framework 3.0? Do I need to do any application compatibility testing for my .NET Framework 2.0 applications?

Because the .NET Framework 3.0 only adds new components to the .NET Framework 2.0 without changing any of the components released in the .NET Framework 2.0, the applications you've built on the .NET Framework 2.0 will not be affected. You don’t need to do any additional testing for your .NET Framework 2.0 applications when you install the .NET Framework 3.0.

When you install the .NET Framework 3.0, the installer will check to see whether you already have the .NET Framework 2.0 (released version) installed. If not, the .NET Framework 3.0 installer will install the .NET Framework 2.0 for you, and then install the new .NET Framework 3.0 components. If you do have the .NET Framework 2.0 installed, the .NET Framework 3.0 installer will only install the new components of the .NET Framework 3.0.

The .NET Framework 3.0 is an additive release to the .NET Framework 2.0. The .NET Framework 3.0 adds four new technologies to the .NET Framework 2.0: Windows Presentation Foundation (WPF), Windows Workflow Foundation (WF), Windows Communication Foundation (WCF), and Windows CardSpace. There are no changes to the version of the .NET Framework 2.0 components included in the .NET Framework 3.0. This means that the millions of developers who use .NET today can use the skills they already have to start building .NET Framework 3.0 applications. It also means that applications that run on the .NET Framework 2.0 today will continue to run on the .NET Framework 3.0.

Here's a look at the structure of the .NET Framework 3.0: