IIN and SONA
This sounds too much like FBI and CIA 
IIN – Inteligent Information Network
SONA - Service Oriented Network Architecture
Been reading the Cisco network academy program and this is the first chapter. I felt lost, thought I was in design land. Anyway some great info is there. Thinking of organizing a strong and flexible network? Surely take a look at this as it describes the architecture of an enterprise network all together with SOHO/Mobile workers/Branch offices. I already knew a good deal of this as the layered network structure (access/distribution/core) is a part of the BCMSN that recently succumbed to my brain.
The biggest problem of all the topics seems to be the remote worker connecting to the inside of the network. VPNs, IPSec, MPLS are all parts of the ISCW so can’t wait to get on to those.
Gotta go now 
