Application Layer	This is where the user interacts with the system. In an embedded internet application, this would be the browser.
Transport Layer	The Transport Layer manages the flow of data between two hosts.  TCP/IP uses one of two transport protocols, TCP (Transmission control protocol), for reliable connections, and UDP (User Datagram Protocol), a much simpler protocol with no delivery guarantees.
Network Layer	The Internet Protocol (IP) encapsulates the TCP frame and adds the datagram's source and destination to the message.
Data Link Layer	This routes the data across the network. An example is Ethernet.  Also known as the Network Interface Layer
:
Physical Network

TCP creates a virtual circuit between the web server and the client. TCP is a suite of protocols. It's two most important protocols are:
- HTTP for web pages,
- FTP for data transfer between nodes