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The OSI Application Layer

The Application layer, layer seven of the OSI model, provides the interface between applications and the Network Operating System (NOS). The Application layer provides network services and applications such as HTTP (Hypertext Transfer Protocol), FTP (File Transfer Protocol), TELNET, SNMP (Simple Netwrok Management Protocol) and SMTP (Simple Mail Transport Protocol).

OSI Application Layer

When you think of the Application layer, don't think in terms of applications, but rather protocols. For example there are several different FTP applications that use the FTP protocol at the Application layer.

More Networking Protocols and Standards:
• Video - Transport Layer (Layer 4) of OSI Networking Model
• IPv6 Address Auto Configuration
• Networking Protocols, Ports, Standards, and Organizations What Does it All Mean?
• Routing Datagrams
• IPv4 Address Classes
• RADIUS Protocol
• IPv6 Packet Fragmentation
• Integration of IPv6 with IPv4
• IPv6 Address Types and Scopes
• Network Operating Systems

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