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.
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:
• Virtual Local Area Networks (VLANs)
• IPv6 Multicast Addresses
• IEEE 802.11.x Wireless Standards
• IP version 6 (IPv6) Advantages and Implementation
• What's the Difference Between a Packet and a Frame?
• Network Cabling and Components
• Wireless Standards - 802.11a 802.11b 802.11g 802.11n 802.11i Explained
• TCP/IP Utilities
• The OSI Reference Model
• Free eBook: IPv6 Addressing
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