Question 60
An enterprise network designer recommends: Restore a valid OSPF backbone connection or properly supported virtual-link design where justified. Which situation most clearly calls for this action?
Explanation
Correct Answer
This case requires the Backbone area connectivity action. Interarea exchange can traverse a continuous logical backbone as OSPF requires.
Incorrect Answers
This other case would be better matched to Design the branch as a suitable OSPF NSSA and use its type 7 external origination behavior. External routes can be introduced inside the NSSA without normal type 5 flooding within that area.
This other case would be better matched to Configure a valid OSPF area range summary at the appropriate area border router. Interarea announcements can be condensed to an aggregate representing covered prefixes.
This other case would be better matched to Use the OSPF designated router and backup designated router election mechanism. Flooding on the broadcast segment is coordinated through elected DR and BDR roles.