The OSI Presentation Layer
By Stephen Bucaro
At the presentaion layer, layer six of the OSI model,source and destination applications
communicate on a format for exchanging data. The sending computer may convert text to a
generic format ( ASCII) for transmission over a network. The receiveing computer converts
the ASCII to the format required by the destination application.
![OSI Presentation Layer OSI Presentation Layer](../images/layer6.gif)
Data Transformation Services Provided by the Presentation Layer
• Text format conversions
• Binary and graphics format conversions
• Compression and expansion
• Encryption and decryption
When you think of the Application layer, keep in mind that the OSI is only a model. Actual network
operating systems may handle the data conversion functions at the application and session layers.
More Networking Protocols and Standards: • Comparing IPv4 and IPv6 at a Glance • Network Routing Protocols - IGRP, EIGRP, OSPF, ISIS, BGP • Networking Protocols, Ports, Standards, and Organizations What Does it All Mean? • IPv6 Payload Length Field and Jumbograms • IPv4 to IPv6 Transition With the Dual-Stack Technique • IPv6 Multicast Addresses • PoE (Power Over Ethernet) • T-Carrier • Active Directory : How Objects Are Stored and Identified • Integration of IPv6 with IPv4
|