Which three factors effects the convergence times in an OSPF network? (Choose three.)

SPF throttling timers (spf-delay, spf-holdtime, spf-maxwait) define the initial delay and exponential backoff before the Dijkstra algorithm runs after a topology change, directly setting the minimum time to install new routes. Tuning these via 'timers throttle spf' is the primary lever for reducing OSPF convergence time.

OSPF pacing timers regulate how the router groups and schedules LSA retransmissions and flooding updates to avoid overwhelming the network. Tuning pacing intervals with 'timers pacing' directly controls how quickly topology information propagates to all routers in the domain.

LSA throttling timers control the minimum interval between accepting an incoming LSA and the delay before generating an updated LSA after a topology event. These timers define the pipeline delay before updated topology information enters the SPF calculation process.

The LSA refresh interval (default 30 minutes) triggers periodic refreshes to prevent LSAs from reaching MaxAge and being purged - it is a maintenance mechanism unrelated to event-driven convergence after a link or node failure.

DR/BDR election determines which routers manage LSA flooding on multi-access broadcast segments during initial adjacency formation, but the election process is not a factor in convergence speed after a topology change occurs.

LSA lifetime (MaxAge, default 3600 seconds) is the aging mechanism used to purge stale LSAs from the topology database when a router withdraws an LSA - it has no bearing on how quickly OSPF converges after a topology event.