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CNS practice questions - frequently asked questions

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

The CNS exam spans 8 domains: Principles of Nutrition (13% of the exam); Nutritional Biochemistry (12% of the exam); Nutrients & Human Health (13% of the exam); Nutrition Assessment (13% of the exam); Clinical Intervention & Monitoring (16% of the exam); Medical Nutrition Therapy (MNT) (15% of the exam); Public Health (12% of the exam); Practice Management (6% 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: Clinical Intervention & Monitoring 16%; Medical Nutrition Therapy (MNT) 15%; Principles of Nutrition 13%; Nutrients & Human Health 13%; Nutrition Assessment 13%; Nutritional Biochemistry 12%; Public Health 12%; Practice Management 6%.

The CNS exam has 200 questions and is completed in 4 hours. Our timed practice mirrors that length and pacing, so exam day feels familiar.

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