Free Juniper JN0-683 Actual Exam Questions - Question 7 Discussion
spine devices. In this scenario, which deployment architecture should you use?
B imo, since CRB centralizes routing on spines, matching the question directly.
Makes sense that CRB (B) is the answer since it centralizes routing on the spines, which matches the question’s need. ERB (A) usually handles routing on the leaves, so that doesn’t fit here. The bridged overlay (C) is more about Layer 2 bridging than routing. Distributed symmetric routing (D) spreads routing across leaves and spines, so it’s not strictly spine-only routing. So, B stands out as the best match for routing on spines only.
It’s B. CRB stands for Centralized Routing and Bridging, which means all Layer 3 routing is done on the spine devices, matching the question requirement. ERB routes on the leaves, so it’s not suitable here. Distributed symmetric routing (D) is more about splitting forwarding paths across leaf and spine but doesn’t centralize routing on spines specifically. Bridged overlay (C) is purely Layer 2 and won’t handle L3 routing. So since you need routing on spines, CRB is the clear choice.
B/D? CRB (B) definitely fits because it centralizes routing on the spine, which is what the question wants. ERB (A) is out since routing happens on leaves there. Distributed symmetric routing (D) could be confusing since it spreads routing, but it's mainly for symmetrical forwarding, not specifically spine-based routing. So B looks cleaner for this scenario.
Good point on CRB, but ERB actually puts routing on the leaf switches, not the spine. So for routing on spines, B fits better here. Go with B.
I think B makes sense since CRB usually puts routing in spines, right? But what about ERB-does it also do routing on spines sometimes?