Which OSPF feature allows the router to recompute SPF changes for only the affected part of the SPT?
A. PRC
B. fast hellos
C. BFD across the entire backbone area
D. incremental SPF
Which OSPF feature allows the router to recompute SPF changes for only the affected part of the SPT?
A. PRC
B. fast hellos
C. BFD across the entire backbone area
D. incremental SPF