单项选择题
A. When the discovery packet enters the router from the DHCP client.
B. Only when the offer packet enters the router from the DHCP server.
C. When the acknowledge packet enters the router from the DHCP server.
D. Only when the discovery packet leaves the router going to the DHCP server.
单项选择题 Which CLI command is used to display the IP address assigned to Dynamic Subscriber Interface and related hardware address using the DHCP Relay Proxy function?（）
多项选择题 Which two E-series functions allow Bridged Ethernet subscribers the ability to recieve a dynamic IP address? （）(Choose two.)
单项选择题 What is true about the functions provided by a DHCP Relay Proxy over the DHCP Relay agent?（）