I gave so many OG0-091 practice tests online and by the time i gave the actual TOGAF 9 Part 1 certification exam, i could answer the questions even in my sleep. However, this was not the same when i began attempting the mock tests. A particular topic How Architecture Governance contributes to the Architecture Development Cycle was very troublesome for me. However, i resolved the troubles by means of practice questions and answers which paid off in the end.