An HSRP design requirement states that preemption must be enabled for the active switch, which is a Cisco 4507R. Assume a boot time of 300 seconds. Which setting of the preemption delay timer minimizes the loss of traffic?
A. 50 seconds
B. 100 seconds
C. 150 seconds
D. 200 seconds
From Cisco CCDP book:
Therefore, the recommended best practice is to measure the system boot time and set the HSRP preempt delay statement to 50 percent greater than this value.
Wouldn’t that be 450 seconds???