Copyright 2002 by
Prentice Hall, Inc.
6-5
OSI
Reference Model
nThe worldwide telephone system has been so effective in connecting people because it has been based on common standards worldwide.
nClosed vs. open networks: closed network - one that is offered by one supplier and to which only the products of that supplier can be attached. Open
networks are based on international standards
so products of many manufacturers can
be attached.
nSeven layer OSI reference model guides the development for computer networks.