Exam 300-715 topic 1 question 188 discussion

I will go with D the closest correct answer

At https://www.cisco.com/c/en/us/td/docs/security/ise/3-0/admin_guide/b_ISE_admin_3_0/b_ISE_admin_30_deployment.html?bookSearch=true#concept_6C3FA27523BC44FC8B7C56731997B71C "The health check node checks the health of the primary PAN at configured intervals"

as mentioned by @redpassion you need a non-admin secondary node which does below... -->The health check node checks the health of the primary PAN at configured intervals<--

Cisco ISE supports Automatic Failover for the Administration persona. To enable the automatic failover feature, at least two nodes in your distributed setup should assume the Administration persona and one node should assume the nonadministration persona. If the primary PAN goes down, an automatic promotion of the secondary PAN is initiated. For this, a non-administration secondary node is designated as the health check node for each of the PANs. The health check node checks the health of the primary PAN at configured intervals. If the health check response received for the primary PAN is not good for reasons, such as the device being down or unreachable, the health check node initiates the promotion of the secondary PAN to take over the primary role after waiting for the configured threshold value. Some features are unavailable after automatic failover of the secondary PAN. Cisco ISE does not support fallback to the original primary PAN

A- Need a heath check secondary node for version 3.0 Cisco ISE supports Automatic Failover for the Administration persona. To enable the automatic failover feature, at least two nodes in your distributed setup should assume the Administration persona and one node should assume the nonadministration persona. If the primary PAN goes down, an automatic promotion of the secondary PAN is initiated. For this, a non-administration secondary node is designated as the health check node for each of the PANs.