[batch-file] How to ping a server only once from within a batch file?

The only thing you need to think about in this case is, in which directory you are on your computer. Your command line window shows C:\users\rei0d\desktop\ as your current directory.

So the only thing you really need to do is:
Remove the desktop by "going up" with the command cd ...

So the complete command would be:

cd ..
ping XXX.XXX.XXX.XXX -t