Preparation for the CNA test Here are links to sites with resources and applications to help you prepare for your C.N.A. Written Exam. Online resources: CNA TESTFree 2019 CNA Practice TestPractice Tests, Flashcards, and Study Guides iPhone apps: CNA Practice Exam PrepCNA Pocket Prep Android Apps: CNA Pocket PrepCNA Practice Test Prep 2019CNA Practice TestCNA Practice Test 2019