<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 layers of the osi model
what are the layers of the osi model
Physical Data link Network Transport Session Presentation Application
Physical Data link Network Transport Session Presentation Application