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Will segmenting wi-fi SSIDs limit the spread of viruses, trojans and the like?
Seeing I am new to the world to networking and need to set up a router, what is the purpose of having multiple SSIDs. Not sure if this qualifies as a separate question (and if it does let me know and I'll post it as a separate question), what is the purpose of having multiple antennas on the router/modem?
Having a wireless router broadcast multiple SSIDs means that it creates multiple networks. This is useful, for example, for creating a password-protected internal network and a public guest network. The router separates traffic so that people on the guest network can't interact with people on the private one.
As far as I know, multiple antennas are just for increasing range.