I'm running F17 and inside of
yum.repos.d. I see multiple repos listed like
google-chrome.repo, etc. When I
yum install are some files being downloaded from multiple different repos or all from one?
Most of the repositories specify a
When downloading multiple packages, yum can download from multiple sites in parallel, though this isn't always obvious in the terminal unless you watch very carefully.
Most packages would be downloaded from fedora.repo. Adobe packages would be downloaded from adobe-linux-i386.repo. Google Chrome packages would be downloaded from google-chrome.repo
Normally the contents of repository do not have the same rpms (like in your example). If you had "conflicting" rpms you can use yum_priorities to choose which one to use first.
But in the end a single rpm will be downloaded from a single (mirror)-server that is mentioned in a single repository (directly or via mirror-list).