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:
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• Video - The Upper Layers 5 Through 7 of the OSI Networking Model
• Looking at the OSI 7 Layer Reference Model
• PoE (Power Over Ethernet)
• Introducing OpenStack
• Network Operating Systems
• An Introduction to the Types of VPNs
• Video - Network Layer (Layer 3) of OSI Networking Model
• IPv6 Prefix Length Notation
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