IBM Systems Network Architecture
Systems Network Architecture (SNA) is IBM's proprietary networking architecture created in 1974. It is a complete protocol stack for interconnecting computers and their resources. SNA describes the protocol and is, in itself, not a single piece of software. The implementation of SNA takes the form of various communications packages, most notably Virtual telecommunications access method (VTAM) which is the mainframe package for SNA communications.
Read more about IBM Systems Network Architecture: History, Objectives of SNA, Principal Components and Technologies, Advantages and Disadvantages, Network Addressable Units, Competitors
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