Hi all, I thought I'd do 640-025 CID before it disappears, so I started reading the Ciscopress book, CID exam certification guide. Now in chapter 2, section "Issues facing campus LAN designers" (I'm using Safari books online so I don't know the page number) it shows figs 2.4 and 2.5 distributed and collapsed backbones respectively. The distributed backbone shows per floor, one router and one switch, the collapsed backbone shows a single router for the building fanning out to one switch per floor. Fair enough I guess, but the scenario 1, Q2 in the same chapter asks what backbone to use in a particular case and then answers it with "distributed backbone" and a picture fig 2.8 that looks rather like the collapsed backbone shown earlier. I obviously have to learn Ciscospeak for the exam so can anybody tell me, which is it? rgds Marc
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