olemus
eriotstarbeline piirangutega sidevõrk
=
a communications network that is used for a specific purpose

ülevaateid
https://www.igi-global.com/dictionary/open-vs-closed-network/21242

http://www.fiber-optical-networking.com/open-network-vs-closed-network-choose.html

https://resources.sei.cmu.edu/asset_files/presentation/2011_017_101_57167.pdf

näiteid
- SWIFTNet
- JWICS
- NIPRNet