With Cisco ASA active/standby failover, what is needed to enable subsecond failover?
A.
Use redundant interfaces.
B.
Enable thestateful failover interface between the primary and secondary Cisco ASA.
C.
Decrease the defaultunitfailover polltime to 300 msec and the unitfailover holdtime to 900 msec
D.
Decrease the default number of monitored interfaces to 1.
C: Decrease the defaultunitfailover polltime to 300 msec and the unitfailover holdtime to 900 msec
It is called sub second failover as the failover can happen in under a second. Both the interface and unit polling times can be configured in milliseconds. Be careful setting the failover settings too low though as you may have a quick communnication loss due to congestion.
I choose C