87. There are 39 religious networks, shopping networks, 10 News/Sports/Lifestyle networks, 15 general entertainment networks, 15 Spanish networks, 9 Public Television networks, and 5 major American networks. Note, these are just networks, there are millions of stations for each network in the US alone.

social networks .

or

The internet

computer networks

because networks are mad with networks

V. C. Marney-Petix has written:

'Internetworking' -- subject(s): Computer input-output equipment, Computer networks, Wide area networks (Computer networks), Local area networks (Computer networks), Data transmission systems

'Networking and data communications' -- subject(s): Computer networks, Data transmission systems

'Mastering internetworking' -- subject(s): Computer networks, Wide area networks (Computer networks), Internetworking (Telecommunication), Local area networks (Computer networks)

'Bridges, routers, gateways!' -- subject(s): Equipment and supplies, Bridges (Computer networks), Local area networks (Computer networks), Routers (Computer networks), Wide area networks (Computer networks), Gateways (Computer networks), Internetworking (Telecommunication)

Networks that have been switched