Layer 5, Session, manipulates simplex (one-direction), half-duplex (two-way, but only one direction can send data at a time), and full-duplex (two-way, in which data can be sent in both directions simultaneously) communications.
The Open Systems Interconnection (OSI) model represents seven layers that computer systems utilize to communicate over a network. It was the first standard model for network communications, embraced by all primary computer and telecommunication companies in the early 1980s.
The Open Systems Interconnection model exists as a conceptual model that describes the universal standard of communication operations of a telecommunication system or computing system, without any reference to the system's underlying internal technology and exhaustive protocol suites.
In the OSI reference model, the communications between a computing system exists split into seven distinct abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Hence, Layer 5, Session, manipulates simplex (one-direction), half-duplex (two-way, but only one direction can send data at a time), and full-duplex (two-way, in which data can be sent in both directions simultaneously) communications.
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