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:
• Routing Datagrams
• IPv6 Prefix Length Notation
• SYN-ACK Handshake to Establish a TCP Connection
• Video - Transport Layer (Layer 4) of OSI Networking Model
• How to Set Up FTP (File Transfer Protocol)
• Video - The Upper Layers 5 Through 7 of the OSI Networking Model
• Remote Control Protocols
• Evolution of the Microsoft NOS (Active Directory)
• Link Aggregation
• IP Addressing and Subnetting
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