问题
问答题 简答题
什么是RIP协议的触发更新（trigger update）？
答案
参考答案：
当路由表发生变化时，更新报文立即广播给相邻的所有路由器，而不是等待下一个更新周期。
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什么是RIP协议的触发更新（trigger update）？
参考答案：
当路由表发生变化时，更新报文立即广播给相邻的所有路由器，而不是等待下一个更新周期。
| 阅读短文，根据短文内容，从短文后的五个选项中选出能填入空白处的最佳选项。选项中有一项为多余选项。 | |
| Everyone enjoys interesting sports. As we all know, 1 . They are often played outside with a ball and thousands of people watch them. Most people are interested in watching their favorite team. They love watching them win. Some interesting sports, like football, is practiced and played in all kinds of' weather. When it is played in the snow or in the rain, 2 . Some games are won or, lost just because the weather is bad. Tickets to important games are not easily bought. Many people can't buy the tickets. but every family has a TV set, 3 .This is better than watching them in the cold rain or snow. When important games are played on weekdays, some people listen to them at work c)n the radio. Sometimes they may make a lot of noise , 4 . They only care about their favorite team . Winning is the only thing they care about.
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