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Which encapsulation protocol is used with PPP to transmit data over serial links?
The High-Level Data Link Control protocol is used as the encapsulation method for serial links. This protocol is the open standard HDLC compared to the native Cisco proprietary version. The Point-to-Point Protocol over Ethernet is widely used with digital subscriber lines and WiMax wireless services. Multiprotocol Label Switching is a WAN connectivity method. X.25 is a legacy WAN protocol used to transmit data.
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