The Open Systems Interconnection (OSI) model defines a networking framework to implement protocols in layers, with control passed from one layer to the next.
It conceptually divides computer network architecture into 7 layers in a logical progression.
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It consists of protocols that focus on process-to-process communication across an IP network and provides a firm communication interface and end-user services.
Serves as the data translator for the network. It is sometimes called the syntax layer
The session layer provides the mechanism for opening, closing and managing a session between end-user application processes
conceptual division of methods in the layered architecture of protocols in the network stack in the Internet Protocol Suite and the Open Systems Interconnection (OSI).
The protocols of the layer provide host-to-host communication services for applications.
responsible for packet forwarding including routing through intermediate routers.
This layer is the protocol layer that transfers data between adjacent network nodes in a wide area network (WAN) or between nodes on the same local area network (LAN) segment
deals with bit-level transmission between different devices and supports electrical or mechanical interfaces connecting to the physical medium for synchronized communication.