Unmanaged switches are basic plug-and-play switches with no management or monitoring options. Compared with other switch types, the cost of unmanaged switches is much lower. They provide basic switching functionality. They do not need an IP address, and do not feature web page or SNMP management or any other advanced functions.
Hubs are essentially like “extension cables” on the network. All incoming messages are retransmitted from the port to each device. Every device sees all other devices’ messages regardless of the intended destination. Due to message collisions, unnecessary traffic will slow down the network speed and may cause long response times.