Ais an intelligent hub because it knows the addresses of the systems connected on each outbound port. instead of repeating traffic on every outbound port, it repeats traffic only out of the port on which the destination is known to exist.

Switch

Explanation:

A switch is considered to be more intelligent than the hub. Like hub, switch is connection point for computers and also other devices in the network. However, the switch is more efficient and appropriate at passing along the traffic. It records addresses of computers connected to it in the table. Thus, switch is an intelligent hub.