JN0-252 Questions and Answers

Types of APs and Security Threats:

Understanding different types of access points and their potential security threats.

Access Point Types:

Neighbor AP: An access point that belongs to a neighboring network and is not necessarily a security threat.

Rogue AP: An unauthorized access point connected to the wired network, posing a significant security threat.

Spoofed AP: An access point that mimics a legitimate one, but typically does not involve being connected to the network.

Honeypot AP: An access point set up to lure attackers, not necessarily a threat unless used maliciously.

Identifying the Threat:

An AP connected to your wired network but not claimed to your organization is considered a rogue AP and poses a security threat.

Conclusion:

The correct answer is B.

References:

Mist Documentation on Access Point Security: Mist Documentation

Event-Driven API: Webhooks are used as an event-driven API in Mist. They allow the system to send real-time notifications to external systems when specific events occur, enabling immediate actions or alerts.

References:

Juniper Networks Documention.

Machine Learning in Wireless Assurance: Mist's Wireless Assurance uses machine learning to analyze telemetry data and identify potential network issues. This approach allows for proactive identification and resolution of faults, improving overall network reliability and performance.

References:

Juniper Networks Documentation

The exhibit displays an interaction sequence typical of RESTful APIs, which use HTTP methods such as GET, POST, PUT, and DELETE to perform operations on resources. RESTful APIs are characterized by their statelessness and reliance on standard HTTP methods, making them a popular choice for web services and applications.

References:

Juniper Mist API Documentation

RESTful Web Services Overview

AP and RADIUS Server Communication: By default, the communication between an Access Point (AP) and a RADIUS server is not encrypted. This can be configured to be encrypted, but it is not the default setting.

Wi-Fi Client and AP Communication: By default, the communication between a Wi-Fi client and an AP is encrypted, typically using WPA2 or WPA3, which ensures the data exchanged over the wireless network is secure.

References:

Mist Wireless Security Documentation

RADIUS Configuration Guide

Both greenfield (new, unconfigured) and brownfield (pre-existing, configured) switches can be adopted into the Mist management framework using the "Adopt Switches" button within the Mist UI.

This process involves bringing the switches under Mist management by applying the necessary configurations and policies from the Mist cloud.

The adoption process ensures that all switches, regardless of their initial state, are integrated and managed consistently within the Mist ecosystem.

Reference: Juniper Networks documentation on switch adoption and provisioning using the Mist UI.

Wi-Fi Location-Based Services (LBS) provided by Mist require the User Engagement subscription.

This subscription includes features that enhance user interactions and engagement, such as location services, which are critical for delivering personalized and location-aware experiences.

By leveraging Wi-Fi LBS with the User Engagement subscription, organizations can offer advanced services like wayfinding, asset tracking, and location analytics.

Reference: Juniper Networks documentation on subscriptions required for Wi-Fi LBS and User Engagement services.

Understanding Marvis Queries:

Marvis is the AI-driven virtual network assistant in Mist that helps with queries and troubleshooting.

Language Used for Queries:

Natural Language: Marvis is designed to understand and respond to natural language queries, making it user-friendly.

Python, C++, SQL: These are programming and query languages not used directly for Marvis queries.

Conclusion:

The correct answer is A (Natural Language).

References:

Mist Documentation on Marvis: Mist Documentation

Rogue AP Detection:

Rogue AP detection is crucial for maintaining network security by identifying unauthorized access points.

Configuration Step:

Enable Rogue AP Detection:

The first and necessary step in configuring rogue AP detection is enabling the feature in the Mist system.

Other Steps:

Setting proximity zones, disabling honeypot detection, and setting the RRM interval are additional configurations but not the initial or mandatory step.

Conclusion:

The correct answer is A.

References:

Mist Documentation on Rogue AP Detection: Mist Documentation

Coverage Hole: Marvis Actions can identify coverage holes where the wireless signal is weak or absent, indicating potential areas that need additional access points or adjustments.

Health Check Failed: This action indicates that the health check, which monitors the performance and connectivity of an access point, has failed, suggesting issues that need to be addressed.

References:

Juniper Networks Documentation

The Simple Network Management Protocol (SNMP) is used by Mist to monitor non-Juniper switches. SNMP is a widely adopted protocol for network management, enabling the collection and organization of information about managed devices on IP networks.

References:

Juniper Mist Monitoring Documentation

SNMP Configuration Guide

To deploy location-based services in Mist, the following components are used:

Location Sensors: These devices capture the location data from BLE tags and other devices.

BLE Tags: These are small devices that emit Bluetooth signals to be picked up by location sensors.

Location Engine: This software processes the data from the sensors and tags to determine precise locations and provide analytics.

References:

Mist Location Services Documentation

Juniper Location Deployment Guide

In the Mist architecture, an organization is a higher-level entity that can contain multiple sites.

A. A site is contained within an organization:Each site operates under the umbrella of an organization, allowing centralized management and policy enforcement.

B. Multiple sites may be contained within a single organization:This structure enables organizations to manage and monitor different geographical locations or different business units within a single centralized framework.

This hierarchical structure facilitates scalable and organized network management.

Reference: Juniper Networks documentation on organizational structure and site management in Mist.

Identify the Changes: Radio Resource Management (RRM) changes and their timings.

RRM Changes:

Channel and power settings based on long-term statistics.

RF template changes to channel width.

Changes triggered by SSID scheduling.

Changes triggered by DFS events.

Timing of Changes:

Long-term RRM changes to channel and power settings are typically scheduled once a day to avoid disrupting network performance.

Conclusion:

Channel and power settings across a site based on long-term statistics and baselines are made once a day between 2:00 AM and 3:00 AM local time.

References:

Mist Documentation on RRM: Mist Documentation