the number of layers in iso osi reference model is four.
the number of layers in iso osi reference model is four.
the number of layers in iso osi reference model?
four
hl7 was founded in 1987 to produce a standard for the exchange of data with hospital information systems. donald w. simborg, the ceo of simborg systems took the initiative to create the hl7 organization with the aim to allow for wider use of its own exchange protocol (known as the statlan protocol, originally defined at the university of california, san francisco in the late 1970s). membership initially consisted of those that had already implemented the statlan protocol. the name "health level-7" is a reference to the seventh layer of the iso osi reference model also known as the application layer. the name indicates that hl7 focuses on application layer protocols for the health care domain, independent of lower layers. hl7 effectively considers all lower layers merely as tools.
health level seven international
in 1983, these two documents were merged to form a standard called "the basic reference model for open systems interconnection". the standard is usually referred to as "open systems interconnection reference model", "osi reference model", or simply "osi model". it was published in 1984 by both the iso, as standard iso 7498, and the renamed ccitt (now called the telecommunications standardization sector of the international telecommunication union or itu-t) as standard x.200.
osi model