Refer to the exhibit. A customer runs OSPF with Area 5 between its aggregation router and an internal router. When a network change occurs in the backbone. Area 5 starts having connectivity issues due

Increasing the bandwidth between Router A and Router B has no effect on OSPF LSA flooding behavior or the rate of SPF recalculations in Area 5.

Configuring LSA filtering on the ABR to permit only summary routes and block more specific LSAs reduces the volume and specificity of topology changes propagated into Area 5, which directly lowers SPF recalculation frequency - achieving stub-like behavior without relying on Router B stub area support.

Creating a virtual link to Area 0 from Router B extends the backbone through Area 5 but does not filter LSAs or reduce SPF recalculations - it would likely increase topology exposure.

LSA throttling adjusts SPF and LSA timers to slow reactions but does not reduce the root cause - the volume of specific LSAs entering Area 5 from the backbone.

Setting Area 5 to stub at the ABR while Router B does not support stub areas causes OSPF hello option mismatches, breaking the adjacency between Router A and Router B entirely.