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CxA practice questions - frequently asked questions

Plain answers about how CxA 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 CxA exam tests. Each one comes with a plain-language explanation of why the right answer is right and the others aren't.

The CxA exam spans 7 domains: Managing Commissioning Projects (18% of the exam); Preparing Commissioning Documentation (19% of the exam); Conducting Commissioning Activities (24% of the exam); Managing Training Activities (4% of the exam); Completing Warranty Phase Activities (5% of the exam); Conducting Existing Building Commissioning (23% of the exam); Conducting On-Going Commissioning (7% 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: Conducting Commissioning Activities 24%; Conducting Existing Building Commissioning 23%; Preparing Commissioning Documentation 19%; Managing Commissioning Projects 18%; Conducting On-Going Commissioning 7%; Completing Warranty Phase Activities 5%; Managing Training Activities 4%.

The CxA exam has 125 questions and is completed in 4 hours 15 minutes. Our timed practice mirrors that length and pacing, so exam day feels familiar.

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