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Layer 6 of the Open System Interconnection (OSI) reference model. This layer
ensures that information sent by the application layer of one system will be
readable by the application layer of another. The presentation layer is also
concerned with the data structures used by programs and therefore negotiates
data transfer syntax for the application layer. Corresponds roughly with the
presentation services layer of the Systems Network Architecture (SNA)
model. See also application layer, data link layer, network layer, physical
layer, session layer, and transport layer.
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