Practice Test GeeksStudy Forums

Finally passed my DOD security clearance exam after two attempts — here's what worked

by James R. 8 views3 replies
J
James R.OP
May 27, 2026

Okay so I've been lurking here for months and figured it was time to actually contribute something useful. Failed my first attempt back in March — not by a lot, but enough to sting. I work in IT contracting and my job basically depends on getting this cleared, so the pressure was real. Second time around I completely changed my approach.

The biggest shift was ditching the random YouTube videos and actually using a proper DOD practice test to gauge where my weak spots were. Turns out I was solid on access controls but completely shaky on NIST frameworks and incident response procedures. Once I had a real picture of my gaps, I built a study guide around those specific areas instead of reviewing everything equally. Spent about 3 weeks, maybe 90 minutes a night.

Scored an 84 on my second attempt. If you're in the middle of prep right now, what topics are giving you the most trouble? Happy to share the specific exam tips that actually moved the needle for me versus the stuff that was just noise.

C
Chris D.
May 28, 2026
This mirrors my experience almost exactly. First attempt I went in way overconfident because I've been in IT for 12 years. The exam doesn't care about real-world experience, it cares about whether you know the specific terminology they're looking for. The study guide I used broke everything into domains with weighted percentages and that reframing honestly saved me. Domain weighting changes how you allocate study time completely.
H
Hannah K.
May 28, 2026
Congrats on passing! I'm scheduled for mine in six weeks and the NIST stuff is killing me too. Can I ask which framework sections tripped you up most — 800-53 or 800-171? I keep confusing the control families and I'm worried that's going to tank me. Also did you do timed practice tests or just work through questions at your own pace?
R
Ravi S.
May 28, 2026
84 is a solid score, well done. For anyone reading this still in prep mode — do NOT skip the physical security questions. Everyone focuses on cyber and gets blindsided by the facility access and visitor control stuff. Cost me points my first time through.

Join the Discussion

Sign in or register to reply with your account, or reply as a guest below.

Related Discussions

← Back to Forum