6.2. 10BaseT
Earlier versions of Ethernet, 10Base5, and 10Base2 were built upon interconnected coaxial cables. These coaxial cables are not very flexible. Therefore, the repositioning of a desktop computer in an office might involve efforts of professional installers. 10BaseT is the first version of Ethernet using twisted pair cables. 10BaseT supports a 10-Mbps transmission rate over two pairs of Category 3 or Category 5 twisted pair cable. Because of the convenience of twisted pair wiring in an office environment, 10BaseT and its higher throughput variations have become the norm for most new Ethernet installations. Category 3 or Category 5 twisted pair cable contains four pairs of wires. 10BaseT uses one pair of wires for transmitting data and ...
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