By Jerry FitzGerald, Alan Dennis
ISBN-10: 0470055758
ISBN-13: 9780470055755
During the last few years, many primary alterations have happened in info communications and networking that may form the longer term for many years to come.Updated with the newest advances within the field, Jerry FitzGerald and Alan Dennis' tenth version of commercial info Communications and Networking keeps to supply the basic ideas and state-of-the-art insurance functions that scholars have to achieve this fast-moving field. Authors FitzGerald and Dennis have built a beginning and balanced presentation from which new applied sciences and functions may be simply understood, evaluated, and in comparison.
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Additional resources for Business Data Communications and Networking, 10th Edition
Sample text
Org. com. Third, there are many useful magazines that discuss computer technology in general and networking technology in particular, including Network Computing, Data Communications, Info World, Info Week, and CIO Magazine. Common Standards There are many different standards used in networking today. Each standard usually covers one layer in a network. 5 outlines some of the most commonly used standards. At this point, these models are probably just a maze of strange names and acronyms to you, but by the end of the book, you will have a good understanding of each of these.
At this point, these models are probably just a maze of strange names and acronyms to you, but by the end of the book, you will have a good understanding of each of these. 5 provides a brief road map for some of the important communication technologies we discuss in this book. 5: For a network to operate, many different standards must be used simultaneously. The sender of a message must use one standard at the application layer, another one at the transport layer, another one at the network layer, another one at the data link layer, and Layer 5.
If a message is received without error, the data link layer will strip off the Ethernet frame and pass the IP packet (which contains the TCP segment, the HTTP packet, and the message) to the network layer. The network layer checks the IP address and, if it is destined for this computer, strips off the IP packet and passes the TCP segment, which contains the HTTP packet and the message to the transport layer. The transport layer processes the message, strips off the TCP segment, and passes the HTTP packet to the application layer for processing.