A Network Paperless Examination System Research And Implementation

Exam to test students an important means of knowledge and ability, with the rapid development of information technology and networks in general, the traditional mode of examination can not meet the requirements of the existing test, the network will not only allow students to easily test and save the required marking papers human, material and financial resources, etc., so that one can also reflect the fairness test. Therefore, greater use of network test, become a major public institutions and schools, often mentioned topic. Most of the past few years, with the popularity of college their campus, university implemented a paperless computer basic course examination, and achieved significant result.In response, the paperless examination system came into being, the paperless examination system is a topic worthy of further study, there are a lot of paperless examination system, through a similar system in-depth study, for Now, some shortcomings and limitations of the system based on the past experience, not only on the multiple choice questions, etc. can be automatically determine the mark, but also for correcting the program questions. In this paper, Microsoft visual studio 2008 as development platform, combined with Microsoft Access 2003 database, use the C# language design and development, this system is a B/S three-tier examination system. The system uses the B/S mode, the students test site is divided into front, back-end server software in two parts. This separate, independently of each other, strong visibility, students can see their programming right or wrong or not, the background of teachers can be seen through the server programming students right or wrong.Innovative and practical aspects of this key is:by the compiler on the server side method of construction, students can read the program code to realize the automatic question mark on the program. According to the different roles, set access control permissions, combined with the development of the database to achieve the kinds of questions for future expansion. Another innovation this paper is that teachers according to their needs, their access to the system, fill in the subject they need and set the score of the subject, to overcome all of the topics in advance to be in the database, so to some extent, overcome the leakage Question of the phenomenon. Website by N-tier structure, the interface layer, business layer, data access layer division, each layer to complete their duties, and provide access to data from the lower to the upper needs. Educational theory to dynamically adjust according to item difficulty and discrimination by teachers set up their own questions of the score, the questions set scores more reasonable.Practice shows that, as a Web-based online examination system for functional test and data tracking, the system can be used to test the theme of university computer programs to go to meet the needs of university computer test, with good scalability.