Most Simple REST request to ping Alfresco server

Hello,

I'm developping a Windows 10 Apps and I need to know if the app can join the alfresco server or not.

I Need to test the connectivity between my App and the Alfresco server. Unfortunaly i can't use ping in UWP so I would like to call the most simple REST request to test if my App can succefully call the Alfresco server.

What is the most simple REST request I can do ??

Thx in advance. Regards.