That one is easy ! Because in a few years (remember, you're 5), you'll be a scout ! And to collect a few dollars for your summer camp, you'll sell pastries to the neighborhood. It's easier than ever because it's 2030, and everyone can just order the pastries on your website, and pay online. All you have to do now is hop on your bike, and deliver the pastries (network connections) to your neighbors (online servers). So you grab the first package, and read the label on it:

• Mrs. Britneak

And that's it ! You have no idea who this person is, or where they live ! So you call out your leader (DNS server):

• Hi Mr. Leader !
• ... (nobody ever get my UDP jokes)
• So I got this package to deliver to mrs. Brtineak. But I don't know where she lives
• Oh sure, let me lookup the register (zone file). Hold on for a sec... Alright, she's here: 62.644888, -160.194309

And then he hangs up immediately (this is UDP, remember?).

You write it down (local caching DNS server), and look it up. You're a scout, so you're trained to read and find GPS coordinates. You go there in a few minutes and deliver the package in time ! Mrs Britneak is happy, and you go on to the next package:

• Mr. Tomburgh

Time to call leader again !