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An application layer is an abstraction layer that specifies the shared communication protocols and interface methods used by hosts in a communications network. [1] An application layer abstraction is specified in both the Internet Protocol Suite (TCP/IP) and the OSI model . [ 2 ]
The Application Layer of the Internet Protocol Suite includes Session Layer protocols and Presentation Layer protocols from OSI. Subcategories ...
The limited deployment of IP Multicast, a best effort network layer multicast protocol, has led to considerable interest in alternate approaches that are implemented at the application layer, using only end-systems. In an overlay or end-system multicast approach, participating peers organize themselves into an overlay topology for data delivery.
OSI model Layer Protocol data unit (PDU) Function [3]; Host layers 7 Application: Data: High-level protocols such as for resource sharing or remote file access, e.g. HTTP. 6
The Application Layer Gateway service in Microsoft Windows provides support for third-party plugins that allow network protocols to pass through the Windows Firewall and work behind it and Internet Connection Sharing. [citation needed] ALG plugins can open ports and change data that is embedded in packets, such as ports and IP addresses.
Network architecture is the design of a computer network.It is a framework for the specification of a network's physical components and their functional organization and configuration, its operational principles and procedures, as well as communication protocols used.
FTAM, ISO standard 8571, is the OSI application layer protocol for file transfer, access and management.. The goal of FTAM is to combine into a single protocol both file transfer, similar in concept to the Internet FTP, as well as remote access to open files, similar to NFS.
For a typical web application, the application server sits behind the web servers. An application server framework is a service layer model. It includes software components available to a software developer through an application programming interface. An application server may have features such as clustering, fail-over, and load-balancing.