What is the definition of preemption for HSRP?
Answer Options
It allows the protocol to effectively load-balance per packet.
It watches an upstream interface and fails over when the interface goes down.
It ignores the priorities of the routers and elects an active router by highest IP address.
When a standby router comes online, it allows for a reelection of the active router.
Correct Answer: D
Explanation
Preemption allows for the election process to happen for a newly added HSRP router. If preemption is not enabled, then the newly added HSRP router will become a standby router. HSRP does not load-balance per packet; Gateway Load Balancing Protocol (GLBP) will load-balance per packet. Object tracking effectively watches an upstream interface and recalculates HSRP if the interface fails. HSRP uses both the priority and highest IP address to elect an active router.