CBO logo
Focused certification exam prep
About FAQ View plans
Questions, answered

CBO practice questions - frequently asked questions

Plain answers about how CBO Exam Prep works: the exam, the questions, pricing, the free trial, and what you actually get.

No - and you should be wary of any site claiming otherwise. Every question here is original, written to mirror the style, difficulty, and judgment the real CBO exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The CBO exam spans 4 domains: Maintain Energy Using Building Systems, Equipment, and Envelope to Minimize Energy Use (27% of the exam); Operate Energy Using Systems for High Performance (41% of the exam); Perform Technical and Administrative Duties (17% of the exam); Maintain Indoor Environmental Quality to Standards (15% of the exam). Every practice question on this site is tagged to one of these domains.

The domains are not weighted equally on the exam. By share of the marks: Operate Energy Using Systems for High Performance 41%; Maintain Energy Using Building Systems, Equipment, and Envelope to Minimize Energy Use 27%; Perform Technical and Administrative Duties 17%; Maintain Indoor Environmental Quality to Standards 15%.

The CBO exam has 120 questions and is completed in 3 hours. Our timed practice mirrors that length and pacing, so exam day feels familiar.

Try 10 free questions View plans