1-what is the diffrence between hdlc and ppp protocol
2- why frame realy technogy called NBMA

Answer Posted / nilesh

difference between ppp and hdlc

ppp is industry standard protocol it supports multiple
routed protocol, and it runs over non propritory devices

hdlc is propritory it runs only propritory environment
its not supports non propritory devices.

nbma-means non broadcast multi access, means frame-relay
technology by default not broadcast any routing updates
so but all devices share network access.

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