| With the rapid development of Internet, more and more web-based (or Internet-based) applications came into being in recent years. The Online Testing System (OTS) come into being in this condition. The Online Testing System, as a result of the combination of computer network technology and database technology, is an expansion of conventional exam room. It can realize automation examinations on many courses, using the resources of campus network.The article presented on-line examination system theory and technical background for the function of the system characterized by the use of the ASP.NET technology, the use of object-oriented methods and the development of the popular three-tier architecture; and the development of the system environment Introduced.Reasonable and scientific are the basis of the Online Testing System, the algorithm of generating test paper decides the quality of the test paper, for this article the algorithm of generating test paper is designed. Through the analysis of exist algorithm of generating test paper and genetic algorithms, a generating test paper algorithms based on improved genetic algorithm is designed. This article also detailed the design and implementation of the Online Testing System are introduced, including the design of database, the design and implementation of the main functional models, etc.The Online Testing System also has higher request to the security, the last chapter of the thesis carries on the analysis to the security, and design a kind of project that can ensure security of the system.This Online Testing System have many advantages of generality, good scalability and security. It also can satisfy the requirements of the complex restrictive condition of generating the test paper. The system will contribute the school to hold the separation of teaching and examination in the examination reform. |
