In the process control industry‚ two sets of wires – one for communications and the other for power- were utilized. This‚ however‚ is quite costly and impractical. It didn’t take long enough for engineers‚ being ingenious species1‚ to find a way to alleviate the growing need; thus‚ challenging them to find an answer to how structured cabling could be more economical and still efficient at the same time. And so the concept of Power over Ethernet (PoE) was born. This paper provides a research of PoE
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7. How do local area networks (LANs) differ from metropolitan area network (MAN)? A local area network (LAN) is a group of microcomputers located in the same general area. It covers a clearly defined small area‚ such as an office‚ home network ‚one floor or work area‚ a single building‚ or a group of buildings. While a metropolitan area network (MAN) connects LANs and BNs located in different areas to each other and to WANs. MANs typically span between three and 30 miles. For example a large university
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Ethernet-over-Sonet Tutorial In order to support increasing data traffic levels‚ equipment developers must build systems that map Ethernet packets over Sonet/SDH links. In this two-part series we’ll lay out the encapsulation techniques required to make Ethernet-over-Sonet come to life. Today’s incumbent service providers are seeking to accommodate increasing demands for bandwidth‚ security and service level management resulting from the proliferation of LAN-based applications. According to RHK
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The case‚ “The battle of the Asian Transshipment Hubs”‚ discusses the struggle of PSA (Port of Singapore Authority) against emergent challengers and the consequent strategies adopted in order to handle these offensives. As far as the port industry is concerned‚ it consists of import/export gateways and transhipment hubs and they can be owned by the state‚ privately through a lease agreement or a joint venture with a port operator. Their competitive advantage is derived from their geographic location
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normal LAN vs. wireless LAN. Computer networks for the home and small business can be built using either wired or wireless technology. Wired Ethernet has been the traditional choice in homes‚ but Wi-Fi wireless technologies are gaining ground fast. Both wired and wireless can claim advantages over the other; both represent viable options for home and other local area networks (LANs). Below
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and our lives in general through technological advancements. Just as the utilization of fire and carving of the wheel gave us advantages over the perils of life‚ the networking of computers has brought an unreachable far off world closer to each and every one of us. First and foremost we are now able to nearly instantaneously share information with an unreachable world. The engineering that made this possible began not on some other planet‚ or from the depths of a holy shrine. But from the ingenuity
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Teknik Instalasi Fisik LAN untuk WARNET Onno W. Purbo Dalam tulisan ini saya mencoba memberikan gambaran tentang beberapa teknik praktis untuk membangun Local Area Network (LAN) khususnya untuk kepentingan Warung Internet (WARNET). Topologi LAN Yang dimaksud dengan topologi dari sebuah LAN adalah bentuk / konfigurasi yang digunakan untuk menyambungkan antar komputer untuk membentuk sebuah LAN. Secara historis & teoritis‚ pada dasarnya ada bebeberapa tipe topologi yang mendasar‚ yaitu:
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Ethernet Systems communicating over Ethernet divide a stream of data into shorter pieces called frames. Each frame contains source and destination addresses and error-checking data so that damaged data can be detected and re-transmitted. The Ethernet provides services up to and including the data link layer. Since its commercial release‚ Ethernet has retained a good degree of compatibility. Features such as the 48-bit MAC address and Ethernet frame format have influenced other networking protocols
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Page 1 The Ten Rules of Industrial Ethernet I. Thou shalt place high priority on security‚ for hackers lurketh‚ thieves stealeth and employees bungleth A Wi-Fi-enabled computer can connect to multiple networks at the same time. Your employees can give a hacker a pathway into your internal network simply by powering up a laptop. Imagine the mess an eco-terrorist could make if he didn’t like the look of your smokestack. Even your well-intentioned employees can bring a network down‚ simply by
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LAN Consulting Plan Yesterday I was hired by Taylor and Sons Financial Consulting set up a local area network with a firewall for a Windows® network. Taylor and Sons Financial Consulting is a medium-sized company that is physically located on the first three floors of one building. Taylor and Sons Financial Consulting have approximately 100 employees. For this task I will use a traditional systems development life cycle (SDLC) that consist of planning‚ analysis‚ design‚ development‚‚ testing
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