You can select the folders and the asset groups as scope for the asset import job. The asset folders, the asset groups, or the assets that are available for selection depend upon the scope limit that you specify in the Limit Asset Import Scope dialog box.
Assume that you want to import the Windows Files. You limit the scope to Windows Machine, which is default scope for the Windows Files. You select a folder as a scope that contains the Windows Machine and Windows Domain. In this case, the asset import query does not consider the Windows Domain as you have limited the scope to Windows Machine only.