题目内容
该网络采用核心层、汇聚层、接入层的三层架构。根据层次化网络设计的原则，数据包过滤、协议转换应在 (11) 层完成； (12) 层提供高速骨=F线路；MAC层过滤和IP地址绑定在 (13) 层完成。
（11）
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根据该网络的需求，防火墙至少需要 (14) 个百兆接口和 (15) 个千兆接口。
（14）
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如何理解“胜人者有力，自胜者强”？
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文： Hello ! Everyone ! I' m Kristine Lu Blake in Los Angeles. And here is a quick update of the headlines of CNN. A 16 year-old schoolboy, Andy Smith was recovered at home yesterday after being trapped all night in the cold store at the butcher' s shop where he works after school. The door swung shut as he was putting meat into the store. He realized he was left all alone after he bad shouted and kicked the door and no one answered. He kept warm by jumping and running for about 13 hours. And we' d like you to make a prediction about Andy Smith at Lu Blake com Poll. Do you believe Andy Smith will remain working at that shop？ And this is prediction now. Now, well, ff you want a prediction, remember, some of all the predictions of "the Blake Factor" of listeners come true. We'll keep you up-to-date on that breaking story on our next hour update that comes your way just after the top of the hour. Stay tuned now, stay with us "World Sports" with Donald Kabuda continues right now, right here on CNN.
(27)
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