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Which of the following is NOT true of Cisco HDLC?

One of the primary reasons for the creation of cHDLC was to address the ISO version of the HDLC protocol's inability to provide multi-protocol support.

HDLC initial link setup, follows a model similar to TCP's 3-way-handshake, except that it is just 1-way, only the initial receiver needs to verify the sender's identity

It is the Cisco default encapsulation on serial links, and can be enabled on previously configured PPP interfaces with the command: "`no encapsulation ppp`"

Cisco HDLC is also known as cHDLC

HDLC frames contain a field for identifying the network protocol being encapsulated

Explanation

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