JN0-253 Online Practice Questions

Explanation:
Juniper Mist Cloud provides visual and automated notifications to alert administrators about subscription status and expiration for services such as Wireless Assurance, Wired Assurance, WAN Assurance, Premium Analytics, and Marvis AI.
According to the Juniper Mist Cloud Administration and Licensing Guide, the system:
“Displays subscription and license expiration warnings in a banner across the top of the Mist portal interface when licenses are within their renewal window.”
This banner typically appears in yellow or red, depending on urgency, and includes direct links to the Subscriptions page for renewal actions.
While subscription status information can also be viewed manually under Organization → Subscriptions, the real-time reminders and notifications appear as banner messages at the top of the Mist Portal.
Options B, C, and D are incorrect because:
Dashboard alerts focus on network events, not licensing.
Marvis Actions highlights operational or performance issues.
Device insights report performance metrics, not subscription data.
Therefore, the correct answer is A. In a banner message at the top of the Juniper Mist portal.
Reference:
C Juniper Mist Cloud Licensing and Subscription Management Guide
C Juniper Mist Administration and Portal User Interface Overview
C Juniper Mist Cloud Operations and Renewal Notifications Documentation

Explanation:
In the Juniper Mist Cloud architecture, both webhooks and APIs are key interfaces for automation, integration, and data exchange with third-party systems. While they both facilitate communication between Mist and external applications, they operate in opposite directions and serve distinct purposes.
According to the Juniper Mist API and Webhook Developer Guide:
Webhooks are push-based notifications initiated by the Juniper Mist Cloud. When specific events occur (such as device disconnection, client onboarding, or alert generation), Mist sends structured JSON payloads to a preconfigured external URL endpoint.
APIs (Application Programming Interfaces) are pull-based queries where an external client polls the Mist Cloud to retrieve or update data (e.g., inventory, configuration, or metrics).
Additionally, the Mist Cloud enforces rate limits on API calls to ensure platform stability and fair usage:
“API rate limits are applied on a per-organization basis to prevent excessive polling and to maintain consistent performance.”
In contrast, webhooks do not have a strict hourly quota because they are event-triggered rather than continuous requests.
Therefore:
A is correct ― Webhooks push, APIs pull.
B is correct ― There is an hourly API rate limit per organization.
Options C and D are incorrect because webhooks are event-based (not rate-limited hourly) and do not configure Mist objects directly―they only send notifications.
Reference:
C Juniper Mist API and Webhook Developer Documentation
C Juniper Mist Cloud Automation and Integration Guide
C Juniper Mist Platform Architecture Overview

Explanation:
Two wired elements configured using an organization-level template in Juniper Mist are VLAN and DNS settings. Organization-level templates are designed to standardize and propagate common settings across all switches within an organization. As per official guides: "These templates can include VLANs and well-known services such as DNS (Domain Name System) that can be used across all devices within a site." VLAN and DNS settings are defined once at the organization (or switch group) template and automatically inherited by all devices, ensuring consistency. Host name and role are set at an individual switch level, not globally via templates.
Reference: Campus Fabric Configuration Example, Mist Wired Assurance Configuration Guide, Organization Template Reference

Explanation:
In the Juniper Mist SD-WAN solution, device-specific WAN Edge templates are used to streamline the deployment and configuration of Juniper SRX or SSR (Session Smart Router) devices serving as WAN Edge nodes. These templates ensure consistent and accurate configurations across a distributed WAN environment while accounting for differences in hardware models and interface types.
According to the Juniper Mist WAN Assurance and SD-WAN Configuration Guide, device-specific templates:
“Automatically generate configuration elements tailored to the hardware platform, including interfaces, ports, and device capabilities.”
They are part of Mist’s cloud-managed SD-WAN automation framework, which combines WAN Assurance and AI-driven insights to manage branch connectivity. The templates simplify provisioning by populating device-level parameters such as:
Interface naming and mapping based on the device model.
Hardware-specific configurations like tunnel endpoints, IP addressing, and routing settings.
Security and performance policies consistent with the organization’s SD-WAN design.
Options A, C, and D are incorrect because:
A (WLAN template automation) pertains to wireless network configuration, not WAN edge devices.
C (traffic inspection) relates to firewall or security policies handled by SRX’s UTM features, not templates.
D (monitoring and attack prevention) falls under Mist’s security or analytics capabilities, not the template function.
Therefore, the correct answer is B. To automatically generate configuration elements specific to device models.
Reference:
C Juniper Mist WAN Assurance and SD-WAN Configuration Guide
C Juniper Mist Cloud Device Template Management Documentation
C Juniper Mist AI-Driven SD-WAN Deployment Overview

Explanation:
You must configure the site within your organization―this is the correct process according to Juniper Mist’s official configuration guides. When setting up a deployment, first an organization is created in the Mist cloud. Within this organization, sites are added for each physical location. The Mist documentation says: "You can create Sites in the Juniper Mist portal from the Organization > Site Configuration menu. Add or update sites as needed." The configuration requires the site name, country, and location to be set at the site level―not the organization level. Claiming APs via QR codes and organization definition are separate steps in device onboarding and initial setup.
Reference: Juniper Mist Management Guide, Mist Edge Teleworker Solution User Guide, Juniper Mist Access Points