09-29-2012, 08:48 PM
Good evening all
I am looking at this question. It shows different equipment talking to its counterpart over a point to point WAN and asks what each type of communication represents. I would have expected the CSU/DSU to be using PPP because they do, routers to be talking using IP because they use layer 3, switches to be using data link because they use layer 2 and the hosts to be using physical for same reasons. The question is how do the pcs communicate to each other. I went for physical as natural progression but the answer is IP - which I would have thought would be he routers. I don't get this at all. Please help
I am looking at this question. It shows different equipment talking to its counterpart over a point to point WAN and asks what each type of communication represents. I would have expected the CSU/DSU to be using PPP because they do, routers to be talking using IP because they use layer 3, switches to be using data link because they use layer 2 and the hosts to be using physical for same reasons. The question is how do the pcs communicate to each other. I went for physical as natural progression but the answer is IP - which I would have thought would be he routers. I don't get this at all. Please help