单项选择题
When two hosts are trying to communicate across a network, how does the host originating thecommunication determine the hardware address of the host that it wants to "talk" to?（）
A.RARP request B.Show Network Address request C.Proxy ARP request D.ARP request E.Show Hardware Address request
单项选择题 Which network protocol does DNS use?（）
单项选择题 DNS servers provide what service?（）
单项选择题 Which statement describes the process of dynamically assigning IP addresses by the DHCP server?（）
