Data Structures and Algorithms (DSA) is one of the core courses of Computer Science (CS) education. The course has several abstract concepts. In this study, misconceptions made by students relating to the Lists, also known as Linked Lists (LL), have been identified. The main and sub-problems were first identified, and then a three-tier multiple-choice conceptual understanding diagnostic test (or three-tier test) was prepared and administered to 291 students. The results were analysed and information about 14 misconceptions were obtained.