The development of assessment management system has been discussed for a long time. The motivation always focuses on the evaluation of learners ' ability or on the difficulties of examination. The common examination content could be composed by text or simple figures, and the assistant functionalities could also be developed to meet the individual needs. But these functionalities couldn't interoperate with each others in this situation, and the text content isn't enough to represent the examination content. In this paper, we proposed a novel system architecture to make interoperability realizable based on web service technologies then we also tried to integrate the multimedia streaming resources into our MAMS (MINE Assessment Management System). Through this architecture, we could easily integrate external functionalities without redeveloping the system. Besides, we propose another way to evaluate student's learning performance by duration of exam, and we will discuss the difficulty coefficient and duration of exam.