Re: Distributed Operating System

Distribued and Centralized environments are simple terms.  Nowadays we use 
terms like Thin Client and distriguted computing (some).

There are some people using thin clients where most of the functionality
and 
the applications are on the server/s, and even the word processing is
loaded 
at the time it is needed.  Do a search for "Thin Client" on an Internet 
Search Engine.  Thin clients require very robust networks because there is

so much data being accessed just to load the software.  Even the the
client 
sotware may be loaded off a network boot server.

If the users and departments have any influence, I think most of them will

opt for every user having their own fully functional PC.  This gives users

and departments more flexibility.

Many systems are built with several layers:
Client - Users and Outside Interfaces???
Network system (between all layers) -
  (Internet -Email -Voicemail- fax server - IP phones)
Application and/or Re****t Servers/3rd party applications
SQL Server
Database Server

There is much more to modern computer systems.