Which three statements are correct about HDLC encapsulation? (Choose three.)
- HDLC does not support CDP.
- HDLC and PPP are compatible.
- HDLC supports PAP and CHAP authentication.
- HDLC implementation in Cisco routers is proprietary.
- HDLC is the default serial interface encapsulation on Cisco routers.
- HDLC uses frame delimiters to mark the beginnings and ends of frames.
Exam with this question: CCNA Exploration 4: EWAN Chapter 2 Exam
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