Re: Net Framework 1.1 or 2.0
WSUS will send 1.1 and 2.0 to clients, if you allow it to, and set it to download and install. Anything that Windows Update website shows, will be avalable off WSUS if you tell it to download it.
Re: Net Framework 1.1 or 2.0
.NET Framework 1.1 is required maybe by a few drivers or Sims.NET from memory, but as for .NET Framework 2.0 it's still relatively new. To be honest I'd only deploy either if you specifically require them.
.NET Framework 1.1 also needs .NET Framework 1.1 SP1 in addition to a security hotfix installed to patch various holes.