Ring networks
Telephone networks
Physical layer (OSI)
Data transfer
Local area networks
Teleprocessing
Data processing
Bus networks
Data link layer (OSI)
Addresses (data processing)
Interfaces (data processing)
Packets (data transmission)
Metropolitan area networks
Start-stop transmission
Data transmission
Packet switching networks
Open systems interconnection
Data transmission control procedures
Information exchange
Telecommunication
Communication networks
Computer networks