about WAN protocols and its layer assignments [1:9134]

["Marcial Rosales Garcia" <Marcial.Garcia@xxxxxxxxxxx>]

Hi all, I would like to contrast with all of you the following
assignations: I have found some erroneous answers in some mock exams:
	
	X.25 	- layer 3
	ISDN	- layer 3 (but also layer2 and layer1)

	PPP	- layer 2
	FR	- layer 2 (but also layer1)
	ATM	- layer 2 (but also layer1)
	HDLC	- layer 2 (but also layer1)
	LAPB	 same
	LAPD	 same (only for ISDN)
	
	Cheers!

	Marcial Rosales




Message Posted at:
http://www.groupstudy.com/form/read.php?f=1&i=9134&t=9134
--------------------------------------------------
Read http://www.groupstudy.com/list/guide.html before POSTING!
To change your subscription, read the directions on:
http://www.groupstudy.com/list/Associates.html