$1.$what were the first four locations hooked upto the internet? $2.$what does the term packet mean? $3.$which came first? the internet or the world wide web? $4.$what was revolutionary about web $2\mathrm{.}0?5.$what was the so called killer app for the internet? $6.$what does the term VoIP mean? $7.$what is a LAN? $8.$what is the difference between an intranet and extranet? $9.$ what is metcalfe's law?