The 7 layers of the OSI Model
	The OSI model consists of 7 layers : Each layer deals with a specific aspect of communication. Each layer provides an interface to the layer above. The set of operations define the service provided by that layer. As a message sent by the top layer is passed on to the next lower layer until the most bottom layer. At each level a header may be prepended to the message. Some layers add both a header and a trailer. The lowest layer transmits the message over the network to the receiving machine. It communicates with the most bottom layer of the receiver. Each layer then strips the header (trailer), handles the message using the protocol provided by the layer and passes it on to the next higher layer. Finally to the highest layer in the receiver. Do you want to see a more detailed description of the 7 OSI layers?