https://javadl-esd-secure.oracle.com :

This is a Java version check that is performed by your operating system.  Since we need to access the client certificate and verify the CA trust store, this call ensures you have the latest CA bundle.  Java has it's own trust store and needs to access data from the internet to keep the data up to date.


http://dmd.metaservices.microsoft.com/dms/metadata.svc  & http://go.microsoft.com/fwlink/?LinkID=109572&clcid=0x409 :

When a device is plugged into the your Windows machine, Windows will go online to grab metadata from Microsoft to ensure you have the correct driver and device data.