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3.0 WAN Technologies - CCNA (ICND2) Packet Tracer Lab
Автор: CCNADailyTIPS
Загружено: 2018-11-12
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https://ccdtt.com/3-0-wan-technologie...
A WAN is a data communications network that covers a relatively broad geographic area and that often uses transmission facilities provided by common carriers, such as telephone companies. WAN technologies generally function at the lower three layers of the OSI reference model: the physical layer, the data link layer, and the network layer.
3.0 WAN Technologies - CCNA (ICND2) Packet Tracer Lab
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