网络考试系统外文翻译

外文资料：Regard along with the network technology daily popularization and the information construction, now the school generally all compounded the test safe monitoring equipment, and has built the management information system in this foundation, to information construction positive impetus function. But has the software construction in the practical work to fall behind the phenomenon which constructs to the hardware, for example, the education administration level also pauses to examinee's inspection in the traditional test pattern, not only the efficiency is low, moreover also has many malpractices, creates the information resource the waste.Test non- paper, network, not only can effectively reduce the correlation personnel's work load, the better use computer and the network superiority, enhances the working efficiency, also can fairly cause the test, to be fair. Based on this kind of demand, we developed set of performance stably for the test design, safe have been reliable the network which, the ease of operation was allowed to satisfy massively simultaneously uses to take a test the system. Causes the test the security, fairness, fair greatly to enhance. After this system actual movement uses, effect good, not only greatly advanced the test information construction advancement, moreover causes the school to examinee's inspection more scientific, air, fair, to be highly effective andthe network.The network test system should be able to satisfy the massive examinees in any place, any time all can participate in the test, and automatic judgment result. Through to the test service demand multianalysis, the main function which this system should provide as follows:1) The examinee may on-line carry on the test, after the test had finished by computer automatic judgment score, and the recording result, the examinee also may examine the standard answer. If the test time, the system automatic prompt completes an assignment and stops doing answers.2) The teacher may on-line establish the revision question bank, revises the examinee individual material, and monitors the examination place situation and so on.3) the manager may on-line establish reference material and so on the examinee, teacher, the verification question bank, arranges the examinee to take a test, revises the examinee and the examination place condition, inquires the examinee to take a test the result, monitors the examination place situation as well as the establishment test project with tests the test question number and so on.Moreover for the guarantee test fair, is fair, the examination paper test question stochastically extracts by the computer from the questionbank. For strictly will cease the test to cheat the behavior, the system later is best also should provide the function which the fingerprint confirmation will register.Its main flow is: After the user basis is authorized registers, the system basis user jurisdiction difference, establishes the corresponding operation. After the train attendant registers may carry on the test, operation and so on examination result and standard answer; After the teacher registers may carry on revises operation and so on examinee's individual material, revision question bank, revision user password as well as monitoring test situation; After the manager registers besides has teacher's all functions, but also may carry on the verification question bank (only has verified question bank only then to be allowed to carry on test),establishment operation and so on test time, inquiry, printing test result.Also may establish following several items:Test workstation: Carries on the test to the examinee the customer end procedure. Mainly provided has carried on according to the system disposition stochastically sets the topic of a composition, the confirmation registers, test function and so on time prompt, automatic judgment result, examination test result as well as standard answer. Test workstation divides into the customer end procedure and the Web way in the realization way, former allows the examinee (support touchesscreen test pattern) through the customer end procedure the way to carry on the test, latter allows the examinee to carry on the test through the test special-purpose network.The test establishes the workstation: Carries on the establishment tote test service the customer end procedure. Mainly provided the revision question bank, the verification question bank, revised the examinee material, establishes the examinee/examination place condition, the inquiry/printing test result, the question bank inducts/derives function and so on function as well as monitoring test situation.Test application server: Network on-line test system application server. Mainly has realized the data cushion and the test service logic seal and duplicate uses the function, is takes a test the workstation, the test establishes the workstation and the database server connection. Has provided the rich connection using the server, may increase or the reduced service rule through the module way, considered later will take a test the service promotion, also should reserve the new test type connection using the server level, will cause later the system to expand conveniently. Moreover, for guarantee test effectiveness, using server support hot backup database server pattern, namely if presently is using the database server breaks down, then in the system disposition reserve database server automatic cutover for the current database server, allthese is does not know in the user with in the intervention situation carries on. Through application server level effectiveness, truly caused the test service to achieve the use easily, the function formidable, the performances table, the modular degree was strong, has satisfied the new time to an information construction higher request.Furthermore, considered the system the stability with carries out the efficiency, in the analysis network configuration foundation, the system later might select distributional three C/S and B/S will mix with the overhead construction method, namely: The examinee if miscarries on the test in this section, may choose the C/S structure to touch the screen test and the examination site test pattern; If the examinee is carries on the test in the outside areas, may choose the B/S structure the examination site test pattern.The network on-line test system needs to carry on the data through the network the transmission, therefore applies the server, the Web server and the database server security must from the system design time carries on the plan. We might use below the security measure:1) In stalls the reliable firewall, carries on the effective containment to the exterior malicious attack.2) The server (including applies server, database server and the Web server) the hard disk district transformation is the NTFS form, open sure sportive jurisdiction according to the different demand for the user.3) May write the essential code the DLL module, not only streng the need the security, simultaneously also caused the system the modular degree to strengthen, enhanced the system performance.4) May carry on two times of encryptions in the database to the essential data.5) 2,000 data backups with restores the function using SQL the SERVER, guarantees the database information the integrity and the security.The current software quite popular system structural model mainly has: C/S structural model and B/S structural model. These two kinds of structures may divide into two with the multilayered overhead con saturation, the main difference lies in whether has used them idle ware (for example COM+ or CORBA) comes the overhead construction to apply the server level. This structural model unified distributional multilayered C/S and the B/S merit designs, divides into the customer level, business logic level and the data level in the usual situation.Customer level: Below mainly uses for to satisfy the overall system each kind of visit demand and processes works: The receive user's in put, carries on the analysis inspection to user's input and makes corresponding processing; Sends out the data to the server to request that, demonstrated by movement result which transmits using the server. The customer level usually is composed by the customer advancement,the customer advancement mainly includes the advancement in this model which the IE browser dynamic foundation the advancement as well as the customer end test workstation founds and so on.Business logic level: Will be responsible to receive the request which will transmit from the customer end or the tour and to request will bequeath the first floor to carry on processing, simultaneously will request the processing result transmission for the customer end or the brow ser. Business logic level advancement mainly is composed by middle ware MTS/COM+ as well as some related processing advancements.Microsoft Corporation has promoted Windows DNA under the Windows platform (Distributed inter Net Application Architecture, distribution network application structure) strategy. Takes Windows COM+ in the DNA strategy the middleware. In the Windows 2,000 above operating systems, COM+ has become a system part. COM+ was the intermediate level has characteristic provided the load balance, the object pond (Object Pooling), business characteristic and so on a series of force support, and the procedure which worked in COM+ receives the operating system the protection, thus the biggest guarantee system security, stable and was highly effective.In this model, mainly through the ADO realization data dynamic ration, ADO is the Microsoft current mainstream data accessing module,compares with the former data accessing technology, it has provided the extremely simple object model, and has sealed the complex first floor visit technology. Data level: Mainly provides the digital data service for business logic level, like the stored datum operating result, returns to the data retrieval result and so on.This structural model has overcome two C/S malpractice, fully has used distributional multilayered C/S and the multilayered B/S merit, extremely good has used the existing network resources, and is to the existing network resources effective integration, the use as well as the expansion.Then what is XMLXML (eXtended Markup Language) is one kind of mark language, likes HTML which we is familiar with to be same, but the XML label is according to own needs to come by the people to have custom-made, in other words, any word and the character all may do for the label uses, so long as can the accurate expression data attribute. The accurate expression data meaning is the biggest advantage which XML brings. Moreover, the XML use text mode saves its form, is advantageous for between the procedure, the operating system links up, the exchange, the adapt ion at present the Internet development. XML appeared the short several years to obtain the widespread application, at present newly promotes software nearly could support XML. For example Microsoft Netseries software, Office series software and so on. Does not leave for several years, XML can replace HTML to become on Internet the standard mark languageThis system if introduces the XML language expression data the advantage, is causes in the system the customer end data demonstration and the system processing data separation, reduces the development system complex, reduces the system process time, reduces the network transmission quantity, thus enhances the system to carry out the efficiency. The unified modeling language (Unified Modeling Language, UML) is the object-oriented software standardized modeling language. Because its simple, is unified, also can express in the software design the tendency and the static information, at present already became the visible modeling language in fact industry standard.From enterprise information system to base on Web distributional application, even is strict real-time inserts the type system all suitably to come in handy UML to come the modeling. This is one kind of rich expression strength language, may describe each kind of view which the development needs, then take this as foundation assembly system. This system if introduces UML the main superiority enhances the software development efficiency, reduces the development time, saves the development cost. T ake the UML language modeling should be by Rational Corporation's Rose tool as best. But Rose quite expensive, andRose quite is huge, uses is not too convenient. Borland Corporation produces the ModelMaker modeling tool not only supports, moreover also has its original place in the object modeling. Therefore the modeling tool selects ModelMaker.翻译：随着网络技术的日趋普及和信息化建设的出视，此刻学校普遍都配制了考试平安监控设备，并在此基础上搭建了治理信息系统，对信息化建设起到了踊跃的推动作用。