Difference between revisions of "Data network"
From Computer History Wiki
m (better cat) |
m (+Better cat) |
||
| Line 9: | Line 9: | ||
{{semi-stub}} | {{semi-stub}} | ||
| + | [[Category: Communication Basics]] | ||
[[Category: Networking Basics]] | [[Category: Networking Basics]] | ||
Revision as of 23:43, 19 June 2023
A data network is a communication network used to carry data. There have been several kinds:
- analog circuit-switching networks: the original analog voice communication system can be used to carry data by use of a modem
- digital virtual circuit-switching networks: the first generation of pure data networks, such as the ARPANET and X.25 networks; although they used packets internally, the service model presented to the user is virtual circuits only
- packet switching networks: in these, the datagram service is exposed to the software on the user's host, which has to build reliable byte streams on top of them; the first was CYCLADES, and the later PUP and TCP/IP protocol suites followed this example
The latter are now the basic information carrying substrate for all communication networks.
