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Unformatted text preview: IP protocol provides the basic naming scheme and a delivery mechanism that can send packets known as datagrams from one Internet host to any another host. The IP mechanism is unreliable in the sense that it makes no effort to recover if datagrams are lost or duplicated in the network. UDP (Unreliable Datagram Protocol) extends IP slightly so that packets can be transfered from process to process, rather than host to 612 CHAPTER 12. NETWORK PROGRAMMING host. TCP is a complex protocol that builds on IP to provide reliable full-duplex connections between processes. To simplify our discussion, we will treat TCP/IP as a single monolithic protocol. We will not discuss its inner workings, and we will only discuss some of the basic capabilities that TCP and IP provide to application programs. We will not discuss UDP. From a programmer’s perspective, we can think of the Internet as a worldwide collection of hosts with the following properties: ¯ ¯ ¯ Hosts are mapped to a set of 32-bit IP addresses. The set of IP ad...
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This note was uploaded on 09/02/2010 for the course ELECTRICAL 360 taught by Professor Schultz during the Spring '10 term at BYU.

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