What you see in that sample file is all you need to configure that static IP address. Do notice, you aren’t setting the address is the same fashion as you did with Ubuntu 16.04.

its resources can find the system. It is more easily found if the IP addressdoes not change and is static. This is not important for the Linux client workstation and thus it is easier to use ...

An IP address is like your physical mailing address. Once you connect a Linux distribution like Ubuntu to the Internet or a ...