CAD exam passed — here's my section-by-section study breakdown

The design pattern recognition framing you described is exactly right. The exam doesn't ask "what is the Observer pattern" — it shows you a system and asks what pattern would solve this problem or what pattern is already being used. That distinction matters a lot for how you study.

10 weeks at 8-10 hours per week is about 90-100 hours total — that's on the higher end of what I hear people putting in. I did closer to 60 hours and passed with a 79%. You probably had a bigger buffer than you needed but 84% is nothing to complain about.

The ORM lazy vs. eager loading questions are sneaky because they assume you've actually debugged an N+1 query problem, not just read about them. I had 3 questions on that topic and only got 2 right. 84% is a great score — what practice materials did you use?

OWASP Top 10 being the de facto study guide for the security section tracks exactly with my experience. If anything I'd say knowing SQL injection and XSS mitigation patterns really well covers a disproportionate number of those questions.

Nice writeup, this is exactly the kind of breakdown I was hunting for. Quick update from my side since I'm a few weeks out from sitting it. I just took a full practice exam this morning and pulled a 71%, which is up from the low 60s I was stuck at a couple weeks ago. Still not where I want to be but the trend's going the right way.

I'm planning to sit the real thing in about three weeks, probably the second week of July if I can keep my study schedule tight. The sections you mentioned line up with where I'm weakest, so I'll be hammering those next. Thanks for posting this, it didn't really click for me how granular I needed to get until I read your breakdown.

The structure design section is what surprised me most. I'd been ignoring it thinking it was straightforward, but it's actually where a lot of points hide. Once I started drilling free cad structure design questions specifically, my weak spots became obvious fast.

That targeted practice changed everything for me. It's not enough to just review the material passively — you've got to test yourself on the exact question types they throw at you. If I hadn't shifted my focus there in the final two weeks, I don't think I would've cleared 80%.

I almost bailed around week six, not gonna lie. I hit the application logic section and just felt like none of it was clicking, and I seriously considered postponing the exam. What kept me going was honestly just the sunk cost of how many hours I'd already put in. Glad I didn't quit.

The breakdown you shared matches almost exactly what I experienced. I'd add that the sections that seemed lighter on paper actually took me longer because I underestimated them and didn't leave enough buffer time. If you're feeling behind midway through, don't panic -- it's normal, and the last two or three weeks tend to be where it all finally starts to connect.

I failed my first attempt by 6 points and honestly it came down to performance optimization — I'd spent way too much time on the deployment sections thinking that's where I'd pick up easy points. Second time I completely restructured my prep. I drilled specifically on the areas I'd flagged as weak instead of doing general review, and I did a ton of targeted practice. The cad cad performance optimization 3 set was actually what clicked it for me on that topic — it's harder than what shows up on the real exam which means the actual test felt manageable.

The other thing I changed was timing. First attempt I wasn't pacing myself and ran out of time on two sections. Second time I set a hard cutoff per section and moved on even if I wasn't sure. You lose more points second-guessing slow than you do making a quick educated guess and keeping momentum. If you failed once don't overthink the content overhaul — figure out your two weakest areas and go deep there instead of redoing everything.