单选题A new asynchronous connection is being installed in your network. Which pair of WAN encapsulations types is suitable for asynchronous lines?（）APPP and ATMBPPP and SDLCCATM and HDLCDSDLC and HDLC
单选题
A new asynchronous connection is being installed in your network. Which pair of WAN encapsulations types is suitable for asynchronous lines?（）
A
PPP and ATM
B
PPP and SDLC
C
ATM and HDLC
D
SDLC and HDLC
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