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知识管理的IT实现 IBM知识管理解决的方案
Training target: In this part,our target is to train your reading speed. You should pay more attention to” word group”. Treating a group of words as a whole unit is a short cut to save your time. We have underlined the word groups in some sentences,and the rest can be practiced by yourself. If there are some new words,you may cover the note area with a piece of paper and try to guess their meanings without looking them up in the dictionary. Text 1.Networking hardware Networking hardware includes all computers,peripherals,interface cards and other equipments needed to perform data-processing and communications within the network. Let’s look some networking hardwares. .. (1)Network Interface Card(NIC):The network interface card provides the physical connection between the network and the computer workstation. Most NICs are internal,with the card fitting into an expansion slot inside the computer. NIC is a major factor in determining the speed and performance of a network. It is a good idea to use the fastest network card available for the type of workstation you are using. . (2)Switch(concentrator):A switch is a device that provides a central connection point for cables from workstations,servers and peripherals. In a star topology,twisted-pair is run from each workstation to a central switch. Switches electrically amplify the signal as it moves from one device to another. Switches no longer broadcast network packets as hubs did in the past,they memorize the addresses of computers and send the information to the correct location directly. . (3)Repeater: Since a signal loses strength as it passes along a cable,it is often necessary to boost the signal with a device called a repeater. The repeater electrically amplifies the signal it receive s and rebroadcasts it. Repeaters can be separate devices or they can be incorporated into a concentrator. They are used when the total length of your network cable exceeds the standards set for th
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