The main function of the hub is to regenerate, shape and amplify the received signal, so as to expand the transmission distance of the network. At the same time, all nodes are concentrated on the node centered on it (the repeater receives the signal from a network cable,
Amplified and sent to the next cable. Comparatively speaking, bridges are more sensitive to information uploaded from checkpoints. A bridge is a technology for forwarding frames)
Switch is a kind of network equipment used for electric signal forwarding. It can provide a dedicated electrical signal path for any two network nodes accessing the switch. (Provide collision detection)
Routing is a three-layer device, and a three-layer switch is also a three-layer device, working in the network layer.
Routing is a device used for complex work, such as finding a better way for data packets and arranging the order of data packets.