单项选择题
A. single ATM header
B. single Ethernet header
C. ATM header followed by a PPP header
D. ATM header followed by an Ethernet header
单项选择题 In a Bridged 1483 network, which set of configuration commands allows the router to forward requests from the PC to an external DHCP server at 3.3.3.3?（）
单项选择题 Which configuration command assigns a host route to the CPE workstation address of 192.168.10.1 in a Bridged 1483 network?（）
单项选择题 A Bridged 1483 network is grouping all DSL users into a single logical subnet. Which configuration command prevents the end users from directly communicating with each other?（）