Sometimes it may be handy to PXE boot live image (running only in memory) over the network.
On this page https://lukas.zapletalovi.com/2016/08/hidden-feature-of-fedora-24-live-pxe-boot.html I found a easy way how to boot Fedora Live CD over the network.
In my case I prefer to build my own image to reduce the size, because I do not need GUI and many other applications located on Fedora Live CD.
Here are few steps how to do it using Lorax project.