How to discover hostname in an iPad?

I need to give an iPad Air II access to my WiFi network and I need to find its hostname (not sure what Apple calls it) so I can give it a DHCP (IPV4) reservation. But I can't figure how to find it. The method outlined in Apple's FAQs assumes the device already is networked but isn't applicable to discovering the hostname if it isn't already networked. I'm thinking I could find it (with what I know of *NIX CLI) if I could access a terminal window, but I can't find that either.

So how can I determine the device's hostname? Or open a terminal session?