Question

why is a switch known as the intelligent hub

Answer 1

A network switch is a switch known as intelligent. Hub

Answer 2

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...The reason switches are known as intelligent hubs is because they build address table in hardware to keep track of different hardware addresses and the port to which each hardware address is associated. The reason why they are compared to hubs because a switch, when started fresh, acts just like a hub.
... Changa ji....Hope this help u