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【简答题】
一个 IP 数据报的数据字段为 3000 字节 , 通过第一个路由器的 MTU=1280 。试问应当划分为几个数据报片?说明每一个数据报片的数据字段长度、 MF 标志位(是否最后一片)和片偏移字段的值。并解释 MF 及片偏移字段的含义。( IP 数据报固定首部长度) 数据长度(字节) MF 片偏移 数据报片 1 数据报片 2 数据报片 3 ......
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【单选题】What will the man do this afternoon?
A.
He has an important meeting.
B.
He has a lunch appointment.
C.
He will check his schedule for openings.
D.
He will write a report.
【单选题】What do we know about the man from the conversation?
A.
He has never been to the beach.
B.
He is hard-working.
C.
He has never spent his weekend in the library.
D.
He wishes he had gone to the beach with the woman.
【简答题】A．No, he is not allowed to change his mind. B．Yes, he has the legal right to do so. C．No, because he has already displayed the goods. D．Yes, if the customer allows him to do so.
【单选题】— Do you think he can get the first prize for jumping? —Impossible now. He to do so, but he has just hurt his leg. [ ]
A.
would expect
B.
was expected
C.
has expected
D.
is expected
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