>I would like to learn the basic "processing path" for the completion of I/O that started with the opening of a file named using UNC and resident on another machine.
>...
I don't yet have all the details clear. But from my study of network basics (first semester of the CCNA course), I understand that an important process involved is called the "Network Redirector".
This component makes network requests - whether through UNC or mapped drives, in the case of Windows - "transparent" to the specific application. That is, a program like Microsoft Word can save a file, without knowing anything very specific about the specific network involved - or print to a printer connected to another computer. If I understand correctly, the "network redirector" will then intercept this request to save, for instance, translate the request to the required network commands to the remote computer, and the remote computer will do the saving - without MS-Word being aware of all the details.
Hilmar.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)