By William Stallings

Data and machine Communications, 10e, is a two-time winner of the easiest machine technology and Engineering textbook of the 12 months award from the Textbook and educational Authors organization. it's perfect for one/two-semester classes in laptop Networks, info Communications, and Communications Networks in CS, CIS, and electric Engineering departments. This publication can also be appropriate for Product improvement team of workers, Programmers, platforms Engineers, community Designers and others excited by the layout of knowledge communications and networking products.


With a spotlight at the most modern expertise and a handy modular structure, this best-selling textual content deals a transparent and finished survey of the total information and desktop communications box. Emphasizing either the elemental rules in addition to the severe function of functionality in riding protocol and community layout, it explores intimately all of the severe technical components in info communications, wide-area networking, neighborhood quarter networking, and protocol layout.

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Mobility has the potential to unleash higher performance at all business levels: personal, workgroup, and enterprise-wide. This provides compelling rationale for further business investment in wireless technologies. Despite the growth in the capacity and the drop in cost of transmission facilities, transmission services remain the most costly component of a communications budget for most businesses. Thus, the manager needs to be aware of techniques that increase the efficiency of the use of these facilities.

As shown, usage statistics indicate that Internet backbone data rate demand in the ­network core doubles approximately every 18 months, while demand in enterprise/LAN ­applications doubles approximately every 24 months. 2. Today’s networks are more “intelligent” than ever. Two areas of intelligence are noteworthy. First, today’s networks can offer differing levels of quality of service (QoS), which include specifications for maximum delay, minimum throughput, and so on to ensure high-quality support for applications and services.

This, in turn, has resulted in a need to increase the speed and efficiency of the Internet. On the other hand, it is only such increased speed that makes the use of Web-based applications palatable to the end user. In this section, we survey some of the end-user factors that fit into this equation. We begin with the need for high-speed LANs in the business environment, because this need has appeared first and has forced the pace of networking development. Then we look at business WAN requirements.

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