When the system upon which a transport entity is running fails and subsequently restarts, the （） information of all active connections is lost. The affected connections become half-open, as the side that did not fail does not yet realize the problem.
The still active side of a half-open connection can close the connection using a （） timer. This timer measures the time the transport machine will continue to await an （） of a transmitted segment after the segment has been retransmitted the maximum number of times. When the timer （）, the transport entity assumes that either the other transport entity or the intervening network has failed. As a result, the timer closes the connection, and signals an abnormal close to the TS user.
In the event that a transport entity fails and quickly restarts, half-open connections can be terminated more quickly by the use of the RST segment. The failed side returns an RST i to every segment i that it receives. When the RST i reaches t
A. data
B. state
C. signal
D. control
Passage Three
When Walt Disney was drawing one night, he suddenly heard a strange sound. The sound came from the waste basket. Walt looked at it and saw a family of mice eating pieces of bread in it. For many nights, they played there. And Walt began to like them.
Walt liked one little mouse better than any of the others. This little animal gave him some new ideas for his drawing. He began to draw it. But in the picture, it did not look like a mouse, but more like a funny man. He showed it to his wife and she liked it very much, too.
Walt named this little mouse "Mickey Mouse". He hoped his Mickey Mouse would be different from the other pictures of his. He wanted to make Mickey talk. He put his fingers on his nose and made a strange sound. Then he recorded the voice this way. Later he sold his sound pictures to a cinema. When the film was shown, many people went to see it. Mickey Mouse in the film sang and danced and did all kinds of fun n
A. reading
B. singing
C. drawing
D. playing
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