[Yum] Does yum correctly handle arch?

[Neal D. Becker]

I'd like to try out yum for managing my linux boxes.  It looks easy, and I 
love python.

A couple of questions first:

1) Will yum correctly handle arch?  If I'm using an athlon system, I want to 
install the athlon kernel.  I want the i686 version of glibc, etc.

2) If yum included a --test or --dry-run switch, I wouldn't actually have to 
bother asking.