节点文献
网络考试系统安全及容错处理的研究与实现
The Research and Realization of Safe and Fault Tolerant Disposal Based on Network Examination System
【作者】 肖毅；
【导师】 刘连浩；
【作者基本信息】 中南大学 ， 计算机应用技术， 2009， 硕士
【摘要】 在现今中国高校中,非计算机专业学生均开设了计算机基础课程,计算机操作能力已成为学生必备的一项技能,虽然每年都有相应的国家和省级计算机等级考试,但在各学校中采用考试系统对计算机基础课程进行测试尚未普遍,且已有的考试系统都存在功能和安全方面的问题,因此研究并开发适合高校计算机基础教学与测试的高可靠、高可用和高安全性的考试系统,成为当前一个重要研究课题。论文深入调查和分析了各种网络考试系统解决方案,着重研究了当前网络考试系统存在的安全和容错性问题,并详细阐述了系统开发中需要采用的相关技术。论文在比较和分析已有考试系统的基础上,研究并设计了针对高校计算机基础教学的网络考试系统,并通过采用身份认证、访问控制、加密传输等技术,保证了考试系统的安全性。本文设计并实现的考试系统通过采用服务器主备双机容错技术、双服务器推拉式通讯技术、客户端单线程管理技术以及客户端失效检测技术,实现了对考试系统的容错管理,提高了考试系统的可靠性和可用性。系统测试表明:考试系统正确地实现了各项功能,并具备较强的系统安全性和容错性。
【Abstract】 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.