Connecting one switch to multiple networks - what is needed?

Joined
Aug 21, 2009
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588
It's been awhile since I've done networking and I forget the terminology/feature that allows a switch to isolate ports and allow for different networks. Is this vlan?

What I need is a switch that could allow for 3 seperate networks and they don't need to talk to each other. I could get 3 5 port switches but if this can be done with a single switch it would be preferable.

What do I look for to find this feature?
 
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