ISDS 1100 Lecture : ISDS NOTES
15 Mar 2019
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Document Summary
Even though the u. s. government funded the development of the technologies that spawned the internet, no one really owns it. The particular local networks that constitute the internet are all owned by different individuals, universities, government agencies, and private companies. Some large companies that provide backbone connectivity included. T lines carried digital data over twisted-pair wires. 1 lines were the first to be used and transmitted data at a throughput rate of 1. 544 mbps. T-3 lines, which were developed later, transmit data at 45 mbps. Today, backbones are typically high-speed, fiber-optic lines, designated as optical carrier (oc) lines. Oc lines come in a variety of speeds: whether dialing up through a conventional modem or connecting through high-speed access, individual. Internet users enter an isp through a point of presence (pop), which is a bank of modems, servers, routers, and switches through which many users can connect to an isp simultaneously.
