Q: 6
DRAG DROP BFD for OSPF is deployed on a directly connected link. If the physical link is disconnected, drag the following BFD processes to the corresponding sequence numbers. 
Drag & Drop
Discussion
This sequence is always so annoying. Link fault alarm to BFD session down then OSPF neighbor drops.
Link fault alarm → The BFD session goes down → Interrupted OSPF neighbor relationship is the right mapping. That's the normal chain of events for a direct physical link cut, pretty sure that's what they're after for this one.
Link fault alarm → BFD session goes down → Interrupted OSPF neighbor relationship is the right order for a direct physical disconnect. BFD relies on the physical link, so once that's cut, the rest follow in sequence. Pretty sure that's what the exam expects here, but correct me if I missed something.
Link fault alarm → The BFD session goes down → Interrupted OSPF neighbor relationship makes sense if it's a physical disconnect. I see people flip BFD and OSPF, but that's more likely on logical failures, not physical. Pretty sure this order matches the question's scenario.
Link fault alarm → The BFD session goes down → Interrupted OSPF neighbor relationship is the order. Physical link fails, BFD detects quick, then OSPF gets notified. That's how it's supposed to go, but correct me if you saw otherwise.
Link fault alarm → BFD session goes down → OSPF neighbor relationship interrupted. That’s the standard path when a direct link drops with BFD on OSPF, matches what’s in the official guides. I think that’s it but open if anyone sees a gotcha.
Link fault alarm then BFD session goes down then OSPF neighbor relationship interrupted. That’s the right event flow for a physical disconnect.
Link fault alarm → The BFD session goes down → Interrupted OSPF neighbor relationship. This order matches the control plane flow, though if BFD passive mode was used (rare), the sequence could flip. Pretty sure this matches standard reports.
Link fault alarm → The BFD session goes down → Interrupted OSPF neighbor relationship. This is what I've seen in exam reports for a physical disconnect case, seems solid to me.
Pretty sure the correct order is: Link fault alarm, then The BFD session goes down, and lastly Interrupted OSPF neighbor relationship. Some folks confuse OSPF dropping before BFD, but BFD has to detect the change first. If anyone has seen a different flow in real configs let me know.
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