请简述ADSL的快速模式Fast与交织模式Interleaved的区别与应用场合？
参考答案：
快速模式和交织模式的区别在于：快速模式在信元调制和纠错方面的手段比交织模式要简单的多，快速模式只有前向纠错，而交织模式具有加扰（增加BIT相关性，用于纠错），交织深度及一些缓存等方面的纠错手段。交织模式对数据包文先进行校验处理，利用芯片的纠错能力，增强了线路的抗干扰性，使ADSL线路稳定性增强，但交织模式会增加线路传输的时延。
根据实际线路情况，在线路情况较使用Fast，线路情况不好使用Interleaved。
| 完形填空。 | ||||
| Do you like comics (漫画)? Many of the world's most popular comics 1 Japan. The drawing is excellent. The stories are interesting. 2 they are fun to read. 3 , Japanese artists often have new ways of drawing. They influence artists in 4 countries. These comics are often made into cartoons 5 are watched by millions of people in Asia, Europe and America. Also, toys are made from the comics. So you can see, it's a very 6 business! Each person 7 his own favorite comic. Some popular 8 are Black Jack, Conan, and Sakura Many artists who draw comics become 9 in Japan. Some of them are like movie stars. People love and respect their 10 . | ||||
|