1. Hub: used to centralize all network devices (computers and other hubs, etc.). ) and distribute the network bandwidth evenly to all network devices. ...
2. Router: Connect multiple machines in the local area network to the external network (beginners can understand this), and the general router is compatible with the switch function. ...
3. Switch: The function is basically the same as the hub, but it can be said to be an advanced hub with VLAN division, and it can also make every machine in the LAN flexibly use the total network bandwidth (theoretically, the bandwidth of each machine is the same as the total network bandwidth). ..