Treatment and Maintenance Strategies for Common Faults in Computer Network.doc

1、1Treatment and Maintenance Strategies for Common Faults in Computer NetworkAbstract. Computer network has many advantages such as resource sharing, wide-area coverage and high efficient operation, etc. Strong data procession function has satisfied the application requirements of users on multiple fu

2、nctions. This paper has summarized the manifestations of common faults in computer network under this background. It makes analysis on the relevant elements of computer network fault and puts forward the efficient strategies for perfecting the network daily maintenance. It hopes to offer help to the

3、 future research. Key words: Computer; network; common faults; treatment; maintenance strategies The promotion of computer technology has created beneficial conditions to the modernization operation of enterprise. Users make use of the computer operation platform and the relevant supporting technolo

4、gies to realize high efficient treatment of data information. However, the excessive dependence on computer operation would cause the occurrence rate of network failures 2to increase, which seriously affects the ordinary application of the users. In order to avoid the adverse effects brought by the

5、network failures, users should adopt comprehensive maintenance treatment measures focusing on the possibly occurred failures. 1 Manifestations of Common Faults in Computer Network Computer network has many advantages such as resource sharing, wide-area coverage and high efficient operation, etc. Str

6、ong data procession function has satisfied the application requirements of users on multiple functions. The promotion of computer technology has created beneficial conditions to the modernization operation of enterprise. Users make use of the computer operation platform and the relevant supporting t

7、echnologies to realize high efficient treatment of data information. However, the excessive dependence on computer operation would cause the occurrence rate of network failures to increase, which seriously affects the ordinary application of the users. In network management, fault management is the

8、set of functions that detect, isolate, and correct malfunctions in a telecommunications network, compensate for environmental changes, and include maintaining and examining error logs, accepting and acting on error detection notifications, tracing 3and identifying faults, carrying out sequences of d

9、iagnostics tests, correcting faults, reporting error conditions, and localizing and tracing faults by examining and manipulating database information. An alarm is a persistent indication of a fault that clears only when the triggering condition has been resolved. Under the influences of multiple fac

10、tors, the occurrence rate of computer network faults apparently increases. The common network faults are shown in Fig.1. 1.1 Page fault In the electronic commercial mode, network page has been the major platform for enterprises to promote their commercial products. A fault management console allows

11、a network administrator or system operator to monitor events from multiple systems and perform actions based on this information. Ideally, a fault management system should be able to correctly identify events and automatically take action, either launching a program or script to take corrective acti

12、on, or activating notification software that allows a human to take proper intervention. Some notification systems also have escalation rules that will notify a chain of individuals based on availability and severity of alarm. The page faults would destroy the relevant operational functions, causing

13、 the users 4to unable to click the execution button and open the page. The hyperlink cannot be open as well. When the circumstance is severe, the computer network page will be in a state of destruction. 1.2 Circuit fault For enterprise users, single computer network can no longer satisfy their requi

14、rements on internal business treatment. Many enterprise users start to operate the computer connection network with multiple computers. The computer network fault is of typical nonlinear and small sample data, and the traditional mathematical model and artificial intelligence method cannot obtain go

15、od results. In order to improve the accuracy of computer network fault diagnosis, we applied the least squares support vector machines to computer network fault diagnosis field. Circuit faults involve circuit wariness, wrong connection, and connection disturbance and so on. These are the common phen

16、omena common exist in computer network faults. 1.3 Program fault Program fault will disturb the good operation environment of network. This kind of faults is shown in the following two aspects: software program and operation program. In consideration on the complexity and diversity of network fault,

17、 5formalized study on network fault management was conducted. By expanding the program with new concepts and definitions, the data type support for description of complex fault information was provided. At the same time, the fault model was built up to provide precise formal description of network f

18、ault collection and analysis. And a reliable mathematical foundation was also provided for the correctness and validity of network fault management system design. 1.4 Network interface controller A network interface controller is a computer hardware component that connects a computer to a computer n

19、etwork. Whereas network interface controllers were commonly implemented on expansion cards that plug into a computer bus, the low cost and ubiquity of the Ethernet standard means that most new computers have a network interface built into the motherboard. The network controller implements the electr

20、onic circuitry required to communicate using a specific physical layer and data link layer standard. This provides a base for a full network protocol stack, allowing communication among small groups of computers on the same local area network and large-scale network communications through routable p

21、rotocols. The faults would result in the normal operation of computer network, for example, network 6loose would lower the normal operation efficiency of the network. 2 Relevant Factors that Cause Computer Network Failure It is certain that computer network has brought convenience to enterprises or

22、users. However, the potentially hidden computer faults cannot be neglected as well. Strong data procession function has satisfied the application requirements of users on multiple functions. This paper has summarized the manifestations of common faults in computer network under this background. The

23、author thinks that the analysis of causes on computer network faults should be summarized from the subjective and objective aspects. 2.1 Virus Currently the computer network is being attacked by virus, which is quite common. Computer virus is computer program designed to copy itself into other progr

24、ams, with the intention of causing mischief or damage. A virus will usually execute when it is loaded into a computers memory. On execution, it instructs its host program to copy the viral code into any number of other programs and files stored in the computer. The corrupted programs may continue to

25、 perform their intended functions while also executing the viruss instructions, thus 7further propagating it. The infection may transfer itself to other computers through storage devices, computer networks, and on-line systems, which can be seen in Fig.2. A harmless virus may simply cause a cryptic

26、message to appear when the computer is turned on; a more damaging virus can destroy valuable data. Antivirus software may be used to detect and remove viruses from a computer, but the software must be updated frequently for protection against new viruses. The Internet, with its global reach and rapi

27、d delivery times, provides the ideal breeding ground for viruses. Typically, someone who wants to spread a virus does so by sending out an email message containing an infected attachment. The subject line on such a message sounds innocuous, so unsuspecting recipients open the message, unwittingly in

28、fecting their computers. 2.2 Collocation Computer collocation is the basic function of computer operations. It has included the collocation on software and hardware. In terms of computer software, it is a series of instructions that a computer can interpret and execute; programs are also called soft

29、ware to distinguish them from hardware, the physical equipment used in data processing. These programming instructions cause the computer to perform 8arithmetic and logical operations or comparisons or to input or output data in a desired sequence. In conventional computing the operations are execut

30、ed sequentially; in parallel processing the operations are allocated among multiple processors, which execute them concurrently and share the results. Programs are often written as a series of subroutines, which can be used in more than one program or at more than one point in the same program. In t

31、erms of hardware, the operation performances of equipments connected to the network is not strong. It refers to power or process of recalling or reproducing what has been learned or experienced. Research indicates that the ability to retain information is fairly uniform among normal individuals; wha

32、t differ are the degree to which persons learn or take account of something to begin with and the kind and amount of detail that is retained. 2.3 Personnel The computer professional skills of the operation personnel are as well one of the causes that affect the faults. Network is expanding its influ

33、ential power for a large number of users. The network operations faced by users are becoming more and more complicated. The network can be well operated only by fully equipped with sufficient professional skill and 9theoretical knowledge. However, enterprises are in lack of good technique training s

34、ystem. The employees can hardly adapt to the office automation. Faults can be made when the network operators or administrators do something wrong on operations. 3 Effective Strategies on Perfecting Network Daily Maintenance Facing the new situation that market economy develops rapidly, computer net

35、work has been applied widely in enterprises. The network operations have stricter requirements on office automation system based on computer platform. It is computer networks that usually cover a limited range, say, within the boundary of a building. A computer network is two or more computers that

36、communicate with each other through some medium. The primary usage of local-area networks is the sharing of hardware, software, or information, such as data files, multimedia files, or electronic mail. Resource sharing provided by local-area networks improves efficiency and reduces overhead. It is n

37、ecessary for enterprises to introduce computer network service. During the process of applying network, the daily maintenance work should be strengthened as well. Therefore, network administrators should strengthen the maintenance and management work. 2.1 Technology maintenance 10Technology is the f

38、undamental strategy for the computer network security. The good operation situation can be maintained only by realizing breakthrough on network technologies. The maintenance is the updating of application programs in order to meet changing information requirements, such as adding new functions and c

39、hanging data formats. For example, the antivirus technology can make regular check on the potential threats in the network. Users can finish the network operation so as to avoid the security failures caused by virus risks. 2.2 Equipment maintenance The performance on software and hardware equipments

40、 of computer determines to a great extent the failure situation. The effects of equipment are to create a safe, stable and high efficient operation environment for users through renewing equipment and supporting sets. Information system maintenance is the routine updating of master files, such as adding and deleting employees and customers and changing credit limits and product prices. It is shown in Fig.3. Improve the operation rate of the current system. Change the connected hardware equipments to new sets in time and improve the ability to resist failures.