It describes a "protocol stack," which is a set of rules and formats that interact with each other. For other protocol stacks, see TCP/IP , SDVoE , ATM , SNA and SS7 . See OSI and ISO .

The layers, and what they represent, are as follows: Layer 7: Application. The Application Layer in the OSI model is the layer that is the “closest to the end user”.

It was my introduction to the OSI model of the Internet. ... On the bottom was the physical layer, next came the “logical” layer or protocols, and on top sat the applications layer. This is good, I ...

The Open Systems Interconnection model (OSI model) is a conceptual model developed by the International Organization for Standardization (ISO) as ISO/IEC 7498-1:1994. It “provides a common basis for ...

According to the OSI Model, the session layer is where connections are established, managed, and torn down. For connection-oriented network protocols, understanding how the session layer works ...

The Internet Protocol layer is comparable to layer 3 in the OSI model. The host-to-host layer is equivalent to OSI layer 4. These are the TCP and UDP (user datagram protocol) functions.

As a matter of fact, when I started writing this post I titled it “Layer 4 of the OSI Model – understanding the application layer,” and then I had to go back and correct myself.