Session Layer is a Communication Layers
and conceptual division of methods in the layered architecture
in the network
Session Layer provides the mechanism for opening, closing and managing a session between user application processes, i.e., a semi-permanent dialogue.
Communication sessions consist of requests and responses that occur between applications.
Session Layer services are commonly used in application environments that make use of Remote Procedure Calls (RPCs).
Within the service layering semantics of the OSI-Model
network architecture, the Session Layer responds to service requests from the presentation Layer
and issues service requests to the transport Layer
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