Define the difference between a hub and a switch

Question

Loki · Accepted Answer

A hub works on the physical layer (layer 1) and doesn't separate collision or broadcast domains.  A switch works on the data link layer (layer 2) and separates collision domains.  This allows multiple devices to talk at full duplex using one switch.  A router works on the network layer (layer 3) and separates both collision domains and broadcast domains.

atelesco · Answer

A hub works on the physical layer, where as the switch works on the datalink layer .  A Switch creates a broadcast domain for each port and allows for full duplex of data allowing you to TX and RX at the same time.  A hub is a shared device, it will propagate  broadcast traffic. Most are only half duplex .

Anonymous · Answer

Network topology.  haven't used since collage.  Googled and found hub propogates to many servers at once (Token Ring) and Switch uses propogation to different subnets.

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