I use boson tests for my practice exams...I download one
exam (contains 200 to 240 questions)...They have it
set up so you can take Exam A, B, C, or D.
I usually pick two exams (A/B, B/C, etc) and stick with them.
When I score in the 90's on a continual basis (usually
over a two week period, along with book study), I know
I am ready. Remember the exams you download or use will
NOT be the actual test questions, but the material you
see on the exam will be very much along the same lines
Good Luck