A WAN is a data communications network that covers a relatively broad geographic area and often uses transmission facilities provided by common carriers, such as telephone companies. WAN technologies function at the lower three layers of the OSI reference model: the physical layer, the data link layer, and the network layer. Topics summarized here include 1- point-to-point links 2- circuit switching 3- packet switching 4- virtual circuits 5- dialup services 6- WAN device ...۱۳۹۵ بهمن ۳۰, شنبه
دانلود پاورپوینت WAN Technologies
A WAN is a data communications network that covers a relatively broad geographic area and often uses transmission facilities provided by common carriers, such as telephone companies. WAN technologies function at the lower three layers of the OSI reference model: the physical layer, the data link layer, and the network layer. Topics summarized here include 1- point-to-point links 2- circuit switching 3- packet switching 4- virtual circuits 5- dialup services 6- WAN device ...
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