【简答题】组播IP地址空间范围? 保留的组播IP地址空间?公网组播IP地址空间?私网组播IP地址空间?
【单选题】电路如图所示,电路中有 ( ) 个结点?
【简答题】________China has successfully launched its Shenzhou Ⅵ with two astronauts in it has shocked the world. A.What B.As C.It D.That
【单选题】组播IP地址为229.130.130.1,其对应的组播mac地址为---_____.