How many official CFAi exams?

CFA Level I
#1

Guys, How many exams are available? Mock, sample- paid vs free. How many questions are in each exam? Thanks S

#2

http://www.cfainstitute.org/cfaprog/resources/

#3

1 free sample (60q) + 2 sample (2x60q) 2 mock exams (2x120q)