diff --git a/cloud/training/101.md b/cloud/training/101.md
index 364d5d5..8ed1203 100644
--- a/cloud/training/101.md
+++ b/cloud/training/101.md
@@ -316,6 +316,10 @@ When the instance is booted, ssh into it and check the result of the file:
 cat /var/log/postinstall.log
 ```
 
+Q: what is the name of the service running inside your instance that execute this `user-data` script?
+
+Q: from which url this service retrieve the script?
+
 ## demo-flask
 
 Try to deploy `demo-flask` with a custom `user-data` script.