Which three attribute-value pairs （AVPs） must be present in L2TPv3 ICRQ messages？ （） ["PW capabilities list","Message type","Assigned control connection ID","PW type","Remote session ID","Hostname"]
叠加原理
What is true about SYN cookies？（） [" All TCPoptions are supported， such as largewindows."," The server can have more than8 unique MSS values."," SYN cookies are not implemented as a method of defending against SYN floods."," SYN cookies are implemented as a method of defending against SYN floods."]
（）是宋代设计史上最辉煌的一页 ["丝织业","制瓷业","青铜业","造纸业"]
教学过程是一个认识过程、发展过程、交往过程的统一。我国学者对教学过程本质问题作了一些研究，可以归纳为以下几类：（）、（）、（）。
记忆的结构
