It happens many times that the system is downloading a file from somewhere. Sometimes it is an application, and sometimes it is my very own browser.
I have looked through http://www.sysinternals.com but I cannot tell nothing about the WHERE of the file is located remotely.
sometimes just for example, your antivirus would download the update, but this would take years, where you could use FDM to speed up the process.
Sometimes you could speed up the browser's only source of download.
Thanks for any enlightments.