it so every single device that can talk on 646-206  the Internet does not need it own absolute unique IP address in the entire world if NAT did not did not exist arm then literally every single device the connected to the internet would need its own IP address and simply there are not enough to IP addresses out there so with this we talk about the IP address every single computer or device on a TCP IP version 4 network needs anis address both to send and receive information we talked about that the subnet mask this is how you subnet more talk about that more in second we talk about default gateway to default gateways or routers are what connects different sub networks so whether it you have multiple sub networks in one building or whether you are trying to connect your law office that work off to the internet the default gateway or routers what separates those two networks about DNS remember domain names CNN dot com Face book dotcom yahoo dot com pica cetera don't mean anything to your computer your computer will go out and talk to a DNS server and all. http://646-206dump.com/