A network engineer is in the predeployment discovery phase of a Cisco ISE deployment and must discover the network. There is an existing NMS in the network. Which type of probe must be configured to…

When an existing Network Management System (NMS) is present, configuring an SNMP probe allows Cisco ISE to passively collect device information, such as IP addresses, MAC addresses, and device types, by querying the NMS or network devices directly via SNMP. This is a common and effective method for initial network discovery and populating the ISE device inventory.

NMAP is an active scanning tool used for port scanning and OS detection, which is generally not a passive probe used by ISE for network discovery in conjunction with an NMS.

NetFlow collects network traffic flow statistics, primarily for monitoring bandwidth usage and anomalies, not for initial device discovery by ISE.

RADIUS is an authentication, authorization, and accounting protocol, used by ISE for policy enforcement, not as a discovery probe.