What is the difference in functionality between the hub and the repeater?
The hub (Hub) is a form of repeaters, the difference lies in the hub can provide multi port services, also known as multi port repeater. The physical layer of the hub in the OSI/RM
In general, both ends of the repeater are connected to the same media, but some repeaters can also do the switching of different media. In theory, the use of repeaters is unlimited, and the network can therefore be indefinitely extended. In fact, this is impossible, because the network standards are specific to the delay range of the signal, the repeater can only work effectively within this set of regulations, otherwise it will cause network failure. The Ethernet standard specifies an Ethernet network that allows only 5 segments to be used, with up to 4 repeaters, and only 3 segments can be hooked up to a computer terminal.
The repeater is the most simple network interconnection equipment, mainly to complete the physical layer, is responsible for the physical layer of two nodes according to a transmission of information, copy, adjust and complete the signal amplification function, in order to prolong the network length. It is the location of the physical layer in the OSI reference model.
As a result of loss, the signal power transmitted on the line will be gradually attenuated, attenuation to a certain extent will cause signal distortion, and this will lead to a reception error. Repeaters are designed to solve this problem. It completes the connection of the physical circuit, amplifies the attenuated signal and remains the same as the original data.
