题目内容
14. Active mode vs. passive mode in FTP? (Describerom whose perspective is the mode and how the dataconnection is established.)
查看答案
搜索结果不匹配？点我反馈
更多问题
15. Control and data connections in FTP? (Explain whywe need two connections.)
16. What protocol messages on the control connection areexchanged in downloading and uploading a le in FTP,using active mode and passive mode, respectively?
17. Why is streaming quite robust to Internet delay, jitter,and loss?
在 Google Analytics（分析）中，什么是“再营销”？
微信支付 
支付宝支付