The Research And Realization Of Safe And Fault Tolerant Disposal Based On Network Examination System

Recently,in college and university of China, computer basic courses are open to all students even who are curbstone to computer, the ability of computer manipulation is an indispensable skill for students.Although national and provincial computer grade test are carried on every year, it isn't prevalent to take the way of network testing system in computer basic course examination; Besides, there are several deficiencies of function or security in existing examination system. So it's an urgent and important task to research and exploit a more reliable, useful and safe examination system, which can adapt to school computer basic course teaching and testing.Various resolvents of network testing system were investigated and analysed in this paper, emphasize on researching the safe and fault tolerate problem existed in current network examination system, and the correlated technologies were expatiated in detail, which needed in the system exploitation.Based on comparing and analysis of recent existent examination system, network testing system was researched and designed, which aimed at computer basic course teaching. By the technologies of ID attestation, access control and encrypt transmission, the security of test system was guaranteed.Through the technologies of fault tolerate in main and spare servers, double servers push-and-pull communication, single-thread management and failure detection in client, network exam system was designed and realized in this paper, which can achieve the management of fault tolerate in exam system, enhance the reliability and usability of examination system.The testing of system made clear that, network examination system achieved kinds of functions exactly, and it had a better ability of security and fault tolerate.