多选题Which two Any Transport over MPLS （AToM） traffic encapsulations require the use of a control word？（）AHDLCBATM AAL5CPPPDEthernet VLANEFrame Relay
多选题
Which two Any Transport over MPLS （AToM） traffic encapsulations require the use of a control word？（）
A
HDLC
B
ATM AAL5
C
PPP
D
Ethernet VLAN
E
Frame Relay
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