多选题Which of the following correctly describe characteristics of PPP?（）AEncapsulates several different types of routing protocols.BSupports only IP.CCan be used over analog circuits.DIs proprietary to CiscoESupports error correction.
多选题
Which of the following correctly describe characteristics of PPP?（）
A
Encapsulates several different types of routing protocols.
B
Supports only IP.
C
Can be used over analog circuits.
D
Is proprietary to Cisco
E
Supports error correction.
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