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Answer Posted / venkatesh
HUB - is a non intelligent device. it just broadcat data
what data will come. it doesnt know what is source host
what is the destination. it is just like multiport repeter.
and it is layer1 device.
Switch - it is a intelligent device. it cant do broadcast.
it can done flooding. also done multicats and unicats. it
is work with mac address. so it is a layer 2 device.
Router - it is mainly used to connet two diff networks. it
is work with ip address. it is a layer 3 device.
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