Switched point-to-point topologies are the fundamental model of standard telephony. A repeater is an digital system that receives a network signal, cleans it of unnecessary noise and regenerates it. Commercial repeaters have extended RS-232 segments from 15 meters to over a kilometer. In most twisted pair Ethernet configurations, repeaters are required for cable that runs longer than one hundred meters. With fiber optics, repeaters could be tens and even hundreds of kilometers aside. ITU-T G.hn technology uses existing residence wiring to create a high-speed (up to 1 Gigabit/s) local area network.
Share hardware – Hardware gadgets linked to a network could be shared with all users. Below are a few examples of network hardware that is often shared. Networks can include as few as two units or be as giant because the Internet, which connects billions of individuals everywhere in the world. The picture shows a technician working in a server room, an example of an space where network gadgets are stored.