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Kevin2014-11-15 19:57:24
Computer networks
Kevin, 2014-11-15 19:57:24

Terminology in computer networks: technologies or protocols?

Very often I come across such sentences, like "Most often, local networks are built on Ethernet or Wi-Fi technologies. It should be noted that the Frame Relay, Token Ring protocols were previously used ...", but at the same time everyone knows that the same Token Ring - this is a technology for building local networks, then why is it called a protocol?
In general, the question is: why are technologies called protocols, and is it really so? That is, can Token Ring be attributed to the class of network protocols?

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4 answer(s)
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Alexey Cheremisin, 2014-11-16
@Klanc

technology - a set of protocols and transmission media
protocol - an agreement to transfer information in a certain way
For example, ethernet technology includes: ethernet data transfer protocols, a specification for physical transmission media (twisted-pair copper, optics, wifi).
Sometimes it is enough to say that there is an interface that implements the ethernet protocol. But in fact, this protocol is implemented, for example, through the hdsc, framerelay or infiniband transmission medium, which also have their own transmission protocols.
Those. when talking about technology, they mean a combination of protocols and physical organization. And speaking of the protocol, they mean only the protocol, and it doesn’t matter what transmission medium it goes through.
After all, it is possible to transmit ethernet traffic inside the vpn channel via the Internet with an infiniband connection.

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Dmitry, 2014-11-15
@zmeyjr

en.wikipedia.org/wiki/OSI_model

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throughtheether, 2014-11-15
@throughtheether

That is, can Token Ring be attributed to the class of network protocols?
Yes.
technologies or protocols?
Technology is a description (logos) of some skill (technos). Technology describes exactly how we do something.
Protocol [data transfer] - a set of agreements that define a certain process [data transfer].
Often these concepts are interchangeable (Ethernet protocol, Ethernet technology). In general, in my opinion, the concept of "technology" is more specific. For example, there is an Ethernet protocol (family of protocols) and Metro Ethernet, Industrial Ethernet technologies (context-specific applications of the Ethernet protocol) built on its basis.

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Spetros, 2014-11-15
@Spetros

Token Ring is a local area network (LAN) technology of a ring with "token access" - a local area network protocol that resides at the data link layer (DLL) of the OSI model.
https://ru.wikipedia.org/wiki/Token_ring

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