Cisco 300-715 Practice Test - Questions Answers, Page 24

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In the context of a wired 802.1X deployment with Cisco ISE, the requirement is to log failed authentications while minimizing user impact. Let's analyze each option:

A) authentication open - This command configures the port to allow network access regardless of the authentication state. It's useful in situations where specific devices can't perform 802.1X authentication but should still be allowed network access. However, it doesn't specifically address the logging of failed authentications.

B) pae dot1x enabled - PAE (Port Access Entity) refers to the entity on a network device that enforces access control. This command enables 802.1X on the port, which is a prerequisite for implementing 802.1X, but doesn't directly relate to logging failed authentication attempts.

C) authentication host-mode multi-auth - This command configures the port to allow multiple authenticated sessions. This mode is used when multiple devices are connected to the same port (like in a conference room). While it's relevant for 802.1X environments, it doesn't specifically cater to logging failed authentications or minimizing user impact.

D) monitor-mode enabled - This command is used in the context of 802.1X to enable Monitor Mode on a port. Monitor Mode allows a port to grant limited network access to endpoints without 802.1X capabilities. It's often used to ease the deployment of 802.1X by monitoring the authentication status without fully enforcing access control, thereby minimizing user impact. It also helps in logging authentication attempts, including failures.

Cisco ISE provides a feature called Adaptive Network Control (ANC) that allows administrators to apply policies to endpoints based on their behavior or status1. One of the ANC policies is Quarantine, which restricts network access for an endpoint by assigning it to a limited-access VLAN or applying an access control list (ACL) on the switch port2. To use the Quarantine policy, the administrator must add the MAC address of the rogue endpoint to the endpoint quarantine list in ISE2. This will trigger a change of authorization (CoA) for the endpoint and apply the Quarantine policy. The other options are not effective for restricting network access for a rogue endpoint, as they do not use the ANC feature of ISE.

Central Web Authentication (CWA) is a feature that allows the network access device (NAD) to redirect the web traffic of a guest user to a web portal hosted by Cisco ISE1. The NAD acts as a proxy between the guest user and the ISE node, and performs the authentication and authorization based on the RADIUS attributes returned by ISE1. To configure CWA on ISE, the administrator must create an authorization profile that contains the URL redirection attribute and assign it to the guest user1. The other options are not correct because they do not use CWA. Device registration WebAuth is a feature that allows users to register their devices on ISE before they can access the network2. WLC with local WebAuth is a feature that allows the wireless LAN controller (WLC) to host the web portal and authenticate the guest user locally3. Wired NAD with local WebAuth is a feature that allows the switch to host the web portal and authenticate the guest user locally

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