一个1400字节长的TCP报文段传到IP层，加上20字节的首部后成为IP数据报。下面的互联网由2个局域网通过路由器连接起来。但第2个局域网的MTU为500字节。因此数据报在路由器处必须进行分片。请在题46表中给出各个数据报片的总长度、标识、片偏移字段的值。
参考答案：[*]C:\Documents and Settings\Administrator\My Documents\图片\2.jpg
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| Bobby was getting cold in the snow. The thin 1 he wore had a few holes in them and people could 2 his toes (脚趾). Bobby had been there for about an hour already. 3 he tried, he still didn't have any 4 of what he could give his mother as a Christmas gift. He didn't have any money. Bobby's mother 5 at night in the hospital, but the little money she made just 6 seemed to be enough. The family was always short of money and material things. 7 , it was never lacking in love. Both Bobby's elder sisters had made beautiful gifts for their 8 . It was Christmas Eve already, but Bobby had 9 . Then suddenly his 10 were caught by something on the road. It was a shiny coin. Never before had Bobby felt he was so 11 . Bobby went into the shop, but his 12 quickly turned cold when a salesgirl told him that he 13 buy nothing with only one coin. Then he noticed a 14 shop. The shop owner asked Bobby if he could 15 him. Bobby gave him the coin and asked if he could but one rose for his mother. The shop owner put his hand on Bobby's shoulder and 16 , "I just happened to have some roses on 17 for a coin of a dozen. Would you like them?" Bobby was 18 . Could this be true? Minutes 19 , the shop owner came to Bobby with a box of twelve beautiful red roses. Bobby knew it was true. He 20 the shop owner, and then left with the beautiful flowers. He didn't feel cold at all. | ||||
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