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Template:OSI model table

From Wikipedia, the free encyclopedia
OSI model
Layer Protocol data unit (PDU) Function[1]
Host
layers
7 Application Data High-level protocols such as for resource sharing or remote file access, e.g. HTTP.
6 Presentation Translation of data between a networking service and an application; including character encoding, data compression and encryption/decryption
5 Session Managing communication sessions, i.e., continuous exchange of information in the form of multiple back-and-forth transmissions between two nodes
4 Transport Segment, Datagram Reliable transmission of data segments between points on a network, including segmentation, acknowledgement and multiplexing
Media
layers
3 Network Packet Structuring and managing a multi-node network, including addressing, routing and traffic control
2 Data link Frame Transmission of data frames between two nodes connected by a physical layer
1 Physical Bit, Symbol Transmission and reception of raw bit streams over a physical medium
  1. ^ "Windows Network Architecture and the OSI Model". Microsoft Documentation. Retrieved 24 June 2020.