Questions about translators

[Hiran Watson]

I have three questions about translators.

The first is what happens when a server executes a translator? That is, is 
the translator run as a layer between the kernel and user app (thereby 
making system calls to accomplish things like internally opening 
files/directoris as well as using the original port for information to and 
from the user app and server)? Or is it run as a layer between the server 
and kernel (thereby making server-specific function calls to accomplish the 
same things mentioned above)?

Secondly, are the servers and translators run as user processes or system 
processes? What about the kernel?

Thirdly, why is there a need for translators? They just seem like an extra 
layer (or "middle-man") between the user app-kernel-server connection that 
would otherwise occur.

Thanks for the help.

God bless
Hiran

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