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These activities are found at the end of each chapter after the Summary section. Chapter 5: Questions 3, 4, and 8 Chapter 5: Mini Case 2 - Central University 3. What are the parts of TCP/IP and what do they do? Who is the primary user of TCP/IP? TCP/IP stands for Transmission Control Protocol/Internet Protocol and is two parts. The TCP part of the protocol is the one that contains a header of control information as to the source and destination of the packet(s). The destination port tells TCP where to send it, and then the source tells the receiver what layer its from. The IP part is the network layer part of the transmission. There are two versions currently in use, and each one contains source and destination addresses as well as the packet length and number. The whole point of TCP/IP is to provide the information necessary to transmit data. The primary user of TCP/IP clients and servers. ... View Full Document

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