JNCIA-MistAI JN0-253 Juniper Study Notes

To enable Juniper Mist Access Assurance for 802.1X (RADIUS) authentication with Cisco APs, the correct approach is to configure a new 802.1X SSID on the Cisco AP referencing your Juniper Mist Edge as the RADIUS server (option C). According to Juniper Mist’s official documentation and architecture guides: “Mist Access Assurance supports end-client authentication on third-party infrastructure by leveraging the Mist Auth Proxy application running on a Mist Edge platform. Third-party devices, such as Cisco APs, are added as RADIUS clients at Mist Edge. The Mist Edge proxy handles all RADIUS authentication traffic from the APs, wraps these authentication requests into a secure RadSec tunnel, and relays them to the Mist Access Assurance cloud for validation against configured authentication rules.”

This deployment does not require direct RADSEC tunneling from Cisco APs to Mist Access Assurance (since Cisco APs are not natively RADSEC capable) but uses Mist Edge as an intermediary RADIUS server and authentication proxy. "Add an authentication rule in Access Assurance to permit user access," enabling centralized management and policy enforcement in the Mist Cloud.

TheJuniper Mist Wired Assuranceplatform uses ahierarchical configuration modelto manage switch settings efficiently across organizations and sites. This hierarchy provides flexibility by allowing administrators to applyglobal configurationsthrough templates at theorganization level, while also permitting site-specific customizations.

According to theJuniper Mist Wired Assurance Configuration and Template Management Guide, the configuration hierarchy functions as follows:

“Switch templates can be created at both the organization and site levels. Organization-level templates define global configurations, while site-level templates provide location-specific customization that overrides the organization-level settings where applicable.”

This structure enables consistent policy deployment while preserving site autonomy for unique configurations. For example, global VLAN or QoS configurations can be managed at the organization level, and local templates can adjust settings for switch ports or device groups at specific sites.

Switch-specific overrides are allowed within the hierarchy, ensuring flexibility in cases where unique port or feature configurations are required.

Therefore:

Bis correct because switch templates exist at theorganization levelfor global use.

Cis correct because switch templates also exist at thesite levelfor localized adjustments.

Audit Logs in Juniper Mist are used to view a complete record of logins. The documentation states: "On the Audit Logs page, you can see who logged in to the Juniper Mist portal, when they logged in, and what they did." Audit Logs also record configuration and administrative actions by users on all sites within the organization, enabling administrators to track activity for compliance, troubleshooting, and security. This comprehensive record assists with accountability and change tracking, but they do not manage subscriptions, organization setup, or error logs for all devices. Filtering options allow for activity analysis over selectable time periods, by users, and by site to provide detailed insights into administrative behavior and user access history.​

InJuniper Mist Wireless Assurance, radio frequency (RF) configurations such as transmit power, channel width, and band selection are typically managed throughRF Templatesat the site or organization level. However, administrators canoverride RF Template settingsfor specific devices or groups of devices when custom configurations are required.

According to theJuniper Mist Wireless Assurance Configuration Guide, RF template overrides can be accomplished using two UI configuration options:

“Administrators can apply overrides to RF settings either per access point using AP-specific settings or across a defined group of APs using labels.”

AP-specific settings (A):Allow administrators to manually modify the radio parameters of a single access point, overriding site-level template values.

Labels (C):Used to group access points logically (e.g., by floor or building) and apply customized configurations or overrides to those APs collectively.

Device Profiles (B)are used for wired switch configurations, andWLAN Templates (D)control SSID-related configurations—not RF parameters.

Therefore, the correct answers areA. AP-specific settingsandC. Labels.