多选题A Bridged 1483 service offering is grouping DSL users into a large subnet.What are three characteristics of this configuration？（）AIt burns IP addresses.BIt conserves IP addresses.CA group of PVCs is a subnet.DIt provides an umbered IP address to the ERXEIt provides an IP unnumbered address to ERX
多选题
A Bridged 1483 service offering is grouping DSL users into a large subnet.What are three characteristics of this configuration？（）
A
It burns IP addresses.
B
It conserves IP addresses.
C
A group of PVCs is a subnet.
D
It provides an umbered IP address to the ERX
E
It provides an IP unnumbered address to ERX
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