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:
• Networking Routing Believability and Administrative Distance
• IP Addressing and Subnetting
• RADIUS Protocol
• IPv6 Multicast Addresses
• Internet Security and VPN Network Design
• T-Carrier - A Complete and Comprehensive Guide
• An Introduction to the Types of VPNs
• Network Routing Protocols - IGRP, EIGRP, OSPF, ISIS, BGP
• Remote Control Protocols
• PoE (Power Over Ethernet)

RSS Feed

 Follow @Stephen Bucaro

 Basics and Certification
 Technologies and Media
 Protocols and Standards
 Troubleshooting and Support
 Network Security
 Cisco Certification