Systems Network Architecture

SNA: Systems Network Architecture
SPCS: State Plane Coordinate System
SPOT: Satellite Pour l'Observation de la Terre ...

SNASystems network architecture. Networking protocol popular in IBM environments.
snappingThe process of moving a feature to coincide exactly with coordinates of another feature within a specified snapping distance, or tolerance.

The move to non-proprietary, open systems began as a response to the dominance of International Business Machines (IBM) and its Systems Network Architecture (SNA). In 1979, the Open Systems Interconnection Reference Model (OSI Model) was published.

See also: Model, Fault, Association, Ethernet, Environment