There are several scenarios where using the CAB file is preferable or necessary:
This CAB contains the binaries required to install .NET Framework 3.5 (which includes 2.0 and 3.0) without downloading from Windows Update.
For enterprise administrators, the CAB file is included in the Volume License versions of Windows.
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /Source:C:\Temp /LimitAccess
There are several scenarios where using the CAB file is preferable or necessary:
This CAB contains the binaries required to install .NET Framework 3.5 (which includes 2.0 and 3.0) without downloading from Windows Update. cab file for .net framework 3.5
For enterprise administrators, the CAB file is included in the Volume License versions of Windows. There are several scenarios where using the CAB
DISM /Online /Enable-Feature /FeatureName:NetFx3 /All /Source:C:\Temp /LimitAccess cab file for .net framework 3.5