单项选择题
A. Drop the data.
B. Send the data frames to the default gateway.
C. Create an ARP request to get a MAC address for the receiving host.
D. Send a TCP SYN and wait for the SYN ACK with the IP address of the receiving host.
单项选择题 When two hosts are trying to communicate across a network, how does the host originating the communication determine the hardware address of the host that it wants to "talk" to?（）
单项选择题 Which network protocol does DNS use?（）
单项选择题 Which statement describes the process of dynamically assigning IP addresses by the DHCP server?（）