1.Which is the most suitable file format to transmit voice and video on the Internet?How to download these files?
1哪一种是在互联网上传输音频和视频的最合适文件格式?怎样下载这些文件?
2.What technique can skype ip telephone apply to guarantee safety?How to provide speedy routing mechanism?
2 什么技术可以用于使Skype IP电话确保安全?如何提供高速的路由机制?