Design And Implementation Of Online Examination System

With the popularity of the computer network in production, life, science and technology, entertainment, it also has gradually deep into the traditional education industry. The computer and network technology in education is the need of modern educational development, but also a necessary means to reform the education model to improve the effectiveness of teaching and teaching efficiency, improve the level of scientific research and management. The current trend is to use a large-scale test database model of computer online examination.Traditional exam test paper, grading methods and student performance management is undergoing tremendous change, therefore, how to make the examination process becomes easy, efficient, fast, fair, is an important subject of modern education. Online examination system is an extension of the traditional examination, it can take advantage of the vast network of infinite space, undertake to the student test anytime and anywhere, greatly simplifies the process of traditional examination, and reduce the test cost. The form of online examination has its advantages of scientific, timely, accurate, fair, etc., many advantages over traditional exam form which cannot be replaced. So the online examination system is the product of electronic teaching under the urgent need.Bluedon Online Examination System is part of the construction of Bluedon Online Education Platform. The system uses Browser/Server three-tier architecture, using the ASP.NET technology, using ADO.NET access to SQL Server 2008 database, meet the needs of the user test anytime and anywhere and reduce test cost, reduce the teacher workload.In this paper, beginning with the structure and function of online examination system, the main research of online examination system is the intelligent test paper composition and the security implementation, including: using Genetic Algorithm to realize the automatic test paper generation, the subjective topic automatic grading, data analysis and mining from behavior and achievement of examinee, finally realizes the exam question bank self-adaptive self-regulation; Using Ajax technology to realize the system anomaly data backup and recovery, according to the role of identity authentication and access control, encrypt the exam question bank, grades and other sensitive data, to prevent students cheating in the process of examination to ensure the safety of system. Maximize the realization of online examination system fair, objective, efficient and convenient features.Through the system function and performance test, it is concluded that all aspects of performance is good, it can meet the use requirements of users and achieve the desired design goals.