Mock tests on oraclestudy.com made me secure 90%

This is very helpful site for preparing for Oracle Solaris 11 System Administrator. It is actually good, I know. There is more than 80 scenario based 1Z0-820 questions on the site. These questions are similar to those in the actual exams. I am happy I knew it in advance and prepared with mock tests on this site. Plus, the site is very reasonable and charges you so less for the mock tests that you can actually practice more with the unlimited access feature for 2 months.