Design And Development Of College Foreign Language Network Examination System

Network examination refers to the network information platform based on the database of test questions with processed,so as to realize the paperless,information and automation of the whole process of the College English test,including basic information management,curriculum management,database management,automatic scoring,with the basic functions of user information management.Traditional college foreign language tests need to be done in advance,such as manual examination,examination paper printing,examination organization,teacher marking,assessment analysis,test paper filing and so on.The networked examination platform can control all the testing processes through information technology and link all links in the college foreign language testing,and provide a solid data foundation for further exploring and exploring the reform of foreign language teaching and teaching reform.Aiming at the actual use of college foreign languages,this paper designs and implements a web based university foreign language testing system,which should be able to help university teachers establish a complete test bank.The author carefully read all kinds of documents,initially grasp the characteristics and various technologies of the networked examination platform,and communicate with the foreign language colleges of the cooperative colleges and universities,grasp the business characteristics of the college foreign language test and analyze the needs of them.Then demand analysis with the results of foreign teachers repeated communication,to determine the system model based on the demand of the design of the system function module,system architecture,database information.In order to solve the problem of the safety and non repudiation of examination papers,we use symmetric cryptography and public key cryptography to solve the two problems of examination paper's confidentiality and non tampering.When the test paper is released,the server generates random symmetric key,and encrypts the examination information with symmetric key,then encrypts the symmetric key with the public key of the teacher machine,then sends it to the teacher machine.The teacher's machine decrypts it with his own private key,and gets the symmetric key of the session.When the exam is ready,the teacher calls the symmetric key to decrypt and sends out the papers to the student side.Through cooperation with colleges and universities,two tests have been carried out on the developed system,which strongly proves that the system can well support the test of the university foreign language.