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First, Cat5 is referred to as Category 5 and Cat6 is referred to as Category 6. The difference between the two lies in the different spacing of twisted pairs. CAT5 has relatively large spacing, CAT6 has relatively tight spacing and the transmission rate is much higher than CAT5E.　　皇上派人来审查，发现并无*谋利勾当。杂货店主人冯寒梅正被匪兵调戏，遇李宏成营长带兵前来搭救。一波未平一波又起。这时，粮仓被烧，火光冲天逼人，李营长领人冲进火海，奋力救粮，冯寒梅将店里的新桶全部献出装水，引得众人称赞，灭火后，二班战士在瀑布下洗澡，突遭土匪袭击，班长壮烈牺牲，神秘的电波不时出现。刚解放的万山县城又处于动荡的变幻中。Half-connection survival time: refers to the longest survival time of entries in the half-connection queue, that is, the longest time from receiving SYN packet to confirming that this message is invalid. This time value is the sum of the longest waiting time of all retransmission request packets. Sometimes we also call the half connection survival time Timeout time and SYN_RECV survival time.E-book download