Question

Which is the best among a switch, router,hub?

Answer 1

Hubs, containing multiple ports, generally connect devices to a network, as segments of a LAN

A switch filters data between LAN segments

A router delivers data along a networks, being connected to at least two networks, in order to perform its mission

Recent models of routers include the featurs of hubs, so you can save some money by purchasing one of them

Answer 2

If we talk about cost then hub will cost less among all. But when it comes to network security then Routers are best.Routers are decision making devuces, you specify a route for data trasmission. And collision does not occur because every port is a seperate collision domain and a seperate broadcast domain.