多项选择题 A Bridged 1483 service offering is grouping DSL users into a large subnet.What are three characteristics of this configuration?（）

单项选择题 How does the ERX Edge Router interact with an external DHCP server in a Bridged 1483 network？（）

单项选择题 A service provider is operating a Routed 1483 network where the ATM PVCs are treated as a large subnet.What is a consequence of this configuration？（）