Know what background processes are doing in detail, DBWR, SMON, PMON, LGWR, etc. No quota means segments cannot grow or be created, only object owner needs quotas. An on-line DB is backed up tablespace by tablespace. YES if you need to preserve integrity between tables. All datafiles must be restored for an incomplete recovery.
Incomplete recovery is to a point in the past.
With V7.3 deferred transaction recovery, rollbacks are done after DB open. Upgrade Exam RMAN cannot write image copies to tape. Some are quite lengthy. This exam is for the real gurus.