<Table> <Tr> <Th colspan="5"> OSI Model </Th> </Tr> <Tr> <Th colspan="2"> Layer </Th> <Th> Protocol data unit ( PDU ) </Th> <Th> Function </Th> </Tr> <Tr> <Th> Host layers </Th> <Td> 7 . Application </Td> <Td> Data </Td> <Td> High - level APIs , including resource sharing , remote file access </Td> </Tr> <Tr> <Td> 6 . Presentation </Td> <Td> Translation of data between a networking service and an application ; including character encoding , data compression and encryption / decryption </Td> </Tr> <Tr> <Td> 5 . Session </Td> <Td> Managing communication sessions , i.e. continuous exchange of information in the form of multiple back - and - forth transmissions between two nodes </Td> </Tr> <Tr> <Td> 4 . Transport </Td> <Td> Segment , Datagram </Td> <Td> Reliable transmission of data segments between points on a network , including segmentation , acknowledgement and multiplexing </Td> </Tr> <Tr> <Th> Media layers </Th> <Td> 3 . Network </Td> <Td> Packet </Td> <Td> Structuring and managing a multi-node network , including addressing , routing and traffic control </Td> </Tr> <Tr> <Td> 2 . Data link </Td> <Td> Frame </Td> <Td> Reliable transmission of data frames between two nodes connected by a physical layer </Td> </Tr> <Tr> <Td> 1 . Physical </Td> <Td> Symbol </Td> <Td> Transmission and reception of raw bit streams over a physical medium </Td> </Tr> </Table>
<Table> <Tr> <Th colspan="5"> OSI Model </Th> </Tr> <Tr> <Th colspan="2"> Layer </Th> <Th> Protocol data unit ( PDU ) </Th> <Th> Function </Th> </Tr> <Tr> <Th> Host layers </Th> <Td> 7 . Application </Td> <Td> Data </Td> <Td> High - level APIs , including resource sharing , remote file access </Td> </Tr> <Tr> <Td> 6 . Presentation </Td> <Td> Translation of data between a networking service and an application ; including character encoding , data compression and encryption / decryption </Td> </Tr> <Tr> <Td> 5 . Session </Td> <Td> Managing communication sessions , i.e. continuous exchange of information in the form of multiple back - and - forth transmissions between two nodes </Td> </Tr> <Tr> <Td> 4 . Transport </Td> <Td> Segment , Datagram </Td> <Td> Reliable transmission of data segments between points on a network , including segmentation , acknowledgement and multiplexing </Td> </Tr> <Tr> <Th> Media layers </Th> <Td> 3 . Network </Td> <Td> Packet </Td> <Td> Structuring and managing a multi-node network , including addressing , routing and traffic control </Td> </Tr> <Tr> <Td> 2 . Data link </Td> <Td> Frame </Td> <Td> Reliable transmission of data frames between two nodes connected by a physical layer </Td> </Tr> <Tr> <Td> 1 . Physical </Td> <Td> Symbol </Td> <Td> Transmission and reception of raw bit streams over a physical medium </Td> </Tr> </Table>
what are the 7 layers of osi model in networking
what are the 7 layers of osi model in networking
7 . Application 6 . Presentation 5 . Session 4 . Transport 3 . Network 2 . Data link 1 . Physical
7 . Application 6 . Presentation 5 . Session 4 . Transport 3 . Network 2 . Data link 1 . Physical