The model represents a standard for connecting network systems. The model does not specify the ways in which the individual systems are connected but serves as a description of its layers, functions and services.
The OSI Model consists of seven layers, each of which, as was already stated, receives the services of the layer below and provides services to the layer above.
1. Physical layer
2. Data Link layer
3. Network layer
4. Transport layer
5. Session layer
6. Presentation layer
7. Application layer
Description of the individual layers
Physical Layer
The Physical layer comprises the lowest layer of the OSI model. Its function is to establish, terminate and manage either a point-to-point connection or a point-to-multipoint connection, to effectively distribute the communication resources to the users and to convert the digital data into signals transmitted by the medium.
Data Link Layer
The Data Link layer provides the link between two adjacent network entities, establishes transmission parameters and signals those errors in the physical layer that it cannot correct. The Data Link layer...
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