100m网线为什么要用8根线（Why does the 100m cable use 8 lines）.docVIP

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2017-09-05 发布于河南
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100m网线为什么要用8根线（Why does the 100m cable use 8 lines）.doc

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100m网线为什么要用8根线（Why does the 100m cable use 8 lines）

100m网线为什么要用8根线（Why does the 100m cable use 8 lines） Why use 100M cable 8 lines (turn)? _ login miss Dameisha waves - Savage aw blog _ Baidu space Baidu space | Baidu home page | Miss Dameisha surf - Savage aw blog miss Dameisha waves -- savage aw blog homepage blog album | personal files | friends see article Why should 100M cable use 8 lines (turn)? 2010, 03, 22, Monday afternoon, 11:25100M cable, why use 8 lines? First of all, I absolutely agree that only four lines can be used on 100M. In the case that the length of the network is no more than 10 meters, it is almost no difference between the 8 and the latter. The maximum peak transmission rate of the 100M network theory is 100M/8 = 12.5M/S, but in fact only an average of 10M/S (file transfer normal range FTP or network neighborhood rate, and computer hardware can achieve the requirements of the situation, if you use an old hard disk, even if the 1G bandwidth, the 1M/S is normal) are now basically the hardware can meet the requirements of the 6M/S, why do you have? This is the problem of the remaining 4 lines, 100M network devices, network cards, switches, routers, etc., to connect the 4 lines. 10M network equipment, these 4 lines vacant. That is to say, in the standard 586B/A connection, if the 100M device is inserted, the 8 one is used. 10M equipment, and the 4 ones are white there, too. Deployed or used in other small current applications will not have much impact, but the transfer is not 586B/ or A, nor is it allowed. This CPU do not overclocking, use a reason, but if the stability and not too much influence, can super over, net line, can save on the province. Whether 10M or 100M, in fact, has only 4 traces of data transmission, which is correct, but in the 100M standard, the other 4 grounded, for shielding, anti-interference. There is also the role of level reference, in both the two lines of data transmission, but also a positive level, a negative level, which to a great extent, has its own anti-interferenc