Various websites have sample CFA test questions, including CertGear, My CFA Space and Kaplan University. Some of these websites also provide detailed answers to the questions.
CertGear provides a powerful CFA test simulator plus authentic exam questions and answers that are available for free download. Kaplan University's Schweser Resource Center offers free e-books that contain various chapters that address main CFA topic areas. The books have a series of CFA multiple-choice questions complete with answers and explanations.
My CFA Space allows students to create accounts and access thousands of first, second and third level CFA test questions divided into finance, economics, equity and derivative investments sub-topics.