单项选择题
A. service dhcp-external
B. set dhcp external server
C. set dhcp-external server
D. dhcp external server
单项选择题 Which command is used to display a address pool for a DHCP Local Server?（）
单项选择题 In a Bridged 1483 network, which CLI commands are used to baseline an IP interface on ATM 6/1.1 and display recent IP transmit and receive statistics?（）
单项选择题 In a Bridged 1483 network, which set of commands is used to configure an ATM sub-interface?（）