ABSTRACT
A layperson’s way of understanding the Internet would be to view it similar to a postal service. The Internet accepts messages (i.e., digital data containing text, images, les, etc.) with a delivery address associated with the message. The TCP/IP protocol takes care of nding various paths to the delivery address and delivering the message to the intended recipient. One major difference between the postal service and Internet analogy is that the Internet does not keep the message intact. Rather, it is broken up in to small manageable pieces called frames. Each of them is routed to the recipient. At the destination, the frames are reassembled in the proper order before the message is delivered.
