LANs can be connected over any distance via telephone lines and radio waves. Some networks do without connecting media altogether, communicating instead via radio waves. Network A network is a group of two or more computer systems linked together. OC3 OC3 is an optical fibre line. OSPF is an interior gateway protocol that uses link-state technology for routing within a group of routers.
PING sends a packet to the specified address and waits for a reply.
PPP provides a common solution for the easy connection of a wide variety of hosts, bridges and routers. Protocol A protocol is a format for the transmission of data between two devices. Routers use headers and a forwarding table to determine where data packets go. The primary innovation of T1 was to introduce digitized voice and to create a network fully capable of digitally representing what was up until then, a fully analog telephone system. The amount of data transferred or processed within a specified amount of time.