单项选择题 What is the purpose of the inverse ARP？（）

单项选择题 X.25协议提供给用户的可用的逻辑信道最多为（）条。

单项选择题 The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?（）