Design And Achieve Of On-line Test System

With the development of education and science technology, the drawback of traditional testing method of paper and pen is becoming more obvious, especially on computer knowledge testing. Therefore, it is necessary to develop and apply the software of on-line test. Based on Java, an on-line test system suitable for all majors and subjects has been designed and applied to practical use.Having a research on the prospects of all the on-line test system, the thesis has a detail analysis on the organization, operation, network database and management of the system.In the thesis, the design method and technologies adopted are mainly focused:Thread, TCP/IP, Stream Socket are applied for the server stability; well-designed database for the safety of SQL server processing; Data Encryption, Random Test generation algorithm are applied to realize the functions of random test, client off-line safety, examination room control and on-line monitor. Network Safety Technology is discussed.Through requirements analysis, the characteristics and function of the system includes:1. Universality: suitable for all subjects;2. Flexibility, convenient for testing and the test base can be renewed whenever necessary;3. Remote, real-time and on-line monitoring of the client;4. Stability: off-line processing function of the client;5. Advanced: remote control of the client off-line and connection to the server;6. Safety: insure the on line management.The defects of the system are analyzed and both the improving methods and resolutions are introduced in the last section.