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The OSI Presentation Layer

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

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:
• The OSI Session Layer
• TCP/IP Protocol Suite
• Networking and Internet Standards Organizations
• Remote Control Protocols
• Network Operating Systems
• A Simple Description of the IPv6 Header and Datagram
• OSI Network Model
• IPv4 Address Classes
• Video - Transport Layer (Layer 4) of OSI Networking Model
• Wireless Standards - 802.11a 802.11b 802.11g 802.11n 802.11i Explained

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