TelecommunicationandComputerNetworks
Manhasalwayshadadesiretoexchangeinformationamongstfellowman.Notsolongago,peoplegatheredonthetownsquaretogossipabouttheaffairsofthetownanditsinhabitants.TheInternethasnowturnedtheWorldintoonebigElectronicTownSquare.Asintheearlydays,thevalueoftheinformationthusdisseminatedshoul
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应该是有用的资料吧，仅看到电路交换、报文交换的插图，还是挺好的。 谢谢分享！
开始看了，感觉还不错。找了好多地方才找到