Abstract: In order to solve the problem of wasting network resources caused by the dispersion, no communication with each other and unbalanced existing in online examination systems, a shared network examination system based on the service on demand and dynamic expansion capability of cloud computing technology was designed and implemented. By the deployment structure of SaaS model, with three-tier architecture of MVC, taking Java as a modeling language, using XFie, JSON, Web Service, DES and other technologies, and combining with the MySQL database, some functions were achieved such as data reception and distribution, authentication, online exam and exam results collection. The results show that the system improves the efficiency of resource utilization and examinations, ensures the fairness and impartiality of the examination, and helps businesses or educational institutions with less cost to complete the candidates geographically dispersed easily in real-time online jobs or exams.

Key words: cloud computing, network examination, cloud examination system, SaaS service