What are the OSI layers and explain about each one

Question

Accepted Answer

OSI layers are a conceptual model for communication systems. There are 7 layers, each with a specific function.

Layer 1 - Physical layer: deals with the physical aspects of data transmission
Layer 2 - Data link layer: responsible for error-free transfer of data between nodes
Layer 3 - Network layer: handles routing and forwarding of data packets
Layer 4 - Transport layer: ensures reliable data transfer between end systems
Layer 5 - Session layer: establishes, manages and terminates sessions between applications
Layer 6 - Presentation layer: responsible for data formatting and encryption
Layer 7 - Application layer: provides services to end-user applications

Accepted Answer

OSI is a reference of framework under stand between different layout device communication stablish 
1 application layer 
2 presentation layer 
3 session layer 
4 transport layer 
5 network layer 
6 data link layer 
7 physical layer

What are the OSI layers and explain about each one

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