There are several questions/answers different from 7-mode to C-mode.
But if you know the parts for 502, know how C-mode works and read how FCoE and iSCSI works on C-mode, you'ĺl be fine.
And practice a lot, hand-on experience is a must.
Use the study guide on the NetApp site(http://www.netapp.com/us/system/pdf-reader.aspx?cc=us&m=nso-504-study-guide.pdf&pdfUri=tcm:10-101912)
There are a few specific questions to Cisco and Brocade, but if you know the basics, it's OK.
Good luck with your test.
Arco