多选题Which of the following are key characteristics of PPP? （）Acan be used over analog circuitsBmaps Layer 2 to Layer 3 addressCencapsulates several routed protocolsDsupports IP onlyEprovides error correction
多选题
Which of the following are key characteristics of PPP? （）
A
can be used over analog circuits
B
maps Layer 2 to Layer 3 address
C
encapsulates several routed protocols
D
supports IP only
E
provides error correction
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