By Behrouz A. Forouzan
Data Communications and Networking, 3/e offers a finished and present creation to networking applied sciences. The e-book is on the market to scholars from all backgrounds and makes use of countless numbers of figures to visually symbolize suggestions.
the hot variation has been thoroughly up to date to mirror the continuously altering international of community applied sciences. greater insurance of bluetooth, instant, satellites, in addition to 4 new chapters on protection were additional. The e-book has additionally more advantageous its assurance of excessive velocity entry to the web with extra on DSL, Cable television, and SONET.
The 3rd variation has transitioned from utilizing the 7-layer OSI version to the 5-layer web version. extra time is spent on TCP/IP within the new association.
Forouzan's ebook remains to be supported via an online studying heart (OLC) that includes many additional assets for college students and teachers. a number of the beneficial properties comprise PowerPoints, ideas, self-quizzing, and Flash animations that illustrate suggestions
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Additional info for Data Communications and Networking
Org, discuss ANSI's activities. 28. org, discuss IEEE's activities. 29. org/, discuss the different types of RFCs. CHAPTER2 Network Models A network is a combination of hardware and software that sends data from one location to another. The hardware consists of the physical equipment that carries signals from one point of the network to another. The software consists of instruction sets that make We can compare the task of networking to the task of solving a mathematics problem with a computer.
A node can be a computer, printer, or any other device capable of sending and/or .. receiVmg data generated by other nodes on the network . Distributed Processing Most networks use distributed processing, in which a task is divided among multiple eomputers. Instead of one single large machine being responsible for all aspects of a process, separate computers (usually a personal computer or workstation) handle a subset. Network Criteria A network must be able to meet a certain number of criteria.
Devices may be arranged in a mesh, star, bus, or ring topology. A network can be categorized as a local area network or a wide area network. A LAN is a data communication system within a building, plant, or campus, or 0 A WAN is a data communication system spanning states, countries, or the whole 0 An intern et is a network of networks. 0 0 There are local, regional, national, and international Internet service providers. 0 0 A protocol is a set of rules that govern data communication; the key elements of a protocol are syntax, semantics, and timing.