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
正确答案:B,E
答案解析:有

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Which two Any Transport over MPLS (AToM) traffic encapsulations require the use of a control word?()
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