An endpoint with the MAC address 04:85:70:26:64:AB attempts to connect to the network. The security administrator wants to ensure that before authentication, only limited access is provided for…

Low-impact mode in Cisco ISE provides initial limited network access (e.g., for DHCP and DNS) to endpoints before they are successfully authenticated, allowing necessary network configurations while preventing full access until 802.1X authentication is complete.

Closed mode prevents all network access until an endpoint is successfully authenticated and authorized, which does not meet the requirement for limited access before authentication.

Monitor mode allows all devices full network access and simply logs authentication attempts without enforcing any restrictions, which does not meet the security requirement.

Open mode allows all devices full network access without requiring authentication, which does not meet the security requirement for authentication and limited access prior to it.