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| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Juniper Networks Certified Associate - Mist AI (JNCIA-MistAI) JN0-253 |
| Exam Number: | JN0-253 |
| Exam Duration: | 90 minutes |
| Available Languages: | English |
| Certificate Validity Period: | 3 years |
| Exam Format: | Scenarios-based questions, Multiple-choice |
| Related Certifications: | JNCIS-ENT JNCIA-Junos |
| Exam Price: | $200 USD |
| Recommended Training: | Juniper Networks Training & Certification Juniper Mist AI Official Training |
| Exam Registration: | Juniper Certification Portal Pearson VUE Juniper Exams |
| Sample Questions: | Juniper JN0-253 Sample Questions |
| Exam Way: | Online proctored or test center (Pearson VUE) |
| Pre Condition: | No formal prerequisites required; basic networking knowledge recommended |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/certification-tracks/mist-ai.html |
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NEW QUESTION # 91
What does the Predictive Analytics and Correlation Engine (PACE) of Mist AI use to understand the end-user experience?
Answer: B
Explanation:
Mist AI's Predictive Analytics and Correlation Engine (PACE) uses machine learning to analyze vast amounts of network data, identify patterns, and correlate events, enabling it to accurately understand and predict end-user experience.
NEW QUESTION # 92
Which two protocols does Marvis Minis automatically validate? (Choose two.)
Answer: C,D
Explanation:
Marvis Minisis a feature withinMarvis Virtual Network Assistant (VNA)that proactively tests and validates network performance by simulating user connections. Instead of waiting for user complaints, it performssynthetic client transactionsto confirm the functionality of critical network services.
According to theJuniper Mist Marvis Minis Technical OverviewandMarvis AI Operations Guide, Minis validates several network functions automatically, including:
* Dynamic Host Configuration Protocol (DHCP):Ensures clients can obtain IP addresses properly from DHCP servers, validating end-to-end DHCP exchange success and response time.
* Address Resolution Protocol (ARP):Verifies correct IP-to-MAC address resolution, confirming that clients can reach devices on the same subnet and that ARP tables are updated correctly.
Marvis Minis also performs checks onDNS resolution, authentication, and application reachability, but not on SNMP or NTP. Those protocols are used for management and time synchronization, not end-user connectivity validation.
Thus, the correct answers areB (DHCP)andD (ARP).
References:- Juniper Mist Marvis Minis Deployment and Operations Guide- Juniper Mist AI Assurance and Troubleshooting Documentation- Juniper Mist Cloud Synthetic Testing Overview
NEW QUESTION # 93
You are asked to create a dedicated guest WLAN which will only be available on the lobby access point (AP) at your office site.
How would you accomplish this task in Juniper Mist?
Answer: B
Explanation:
Comprehensive and Detailed Explanation verified by Juniper Mist documentation:
To ensure a guest WLAN is available only on a specific lobby AP, the correct approach according to Juniper Mist best practices is to create a new "Guest" WLAN template and add it to the lobby AP using a device profile. This method leverages device profiles for targeted SSID airtime availability, allowing granular WLAN assignment to selected APs (not all APs or sites). Juniper's documentation and solution briefs confirm that device profiles control which SSIDs broadcast on specific access points within a site, supporting scenarios like dedicated guest access only in particular areas such as the lobby.
Creating WLANs in standard templates enables SSID broadcast across all assigned APs, not selectively per device. Organization labels do not restrict SSID broadcast for individual APs.
Verification:
Your selected answer in the image ("Create a new 'Guest' WLAN template and add it to the lobby AP using a device profile") is correct and aligns with Juniper's recommended workflow.
**
References:
Juniper Mist WLAN Template and Device Profile Documentation
Mist Management Guide
Juniper Mist Implementation Best Practices
NEW QUESTION # 94
Which two components make up a self-driving AI network? (Choose two.)
Answer: A,B
Explanation:
Actions are the automated or guided responses the AI network takes to optimize performance or resolve issues.
Telemetry is the data collected from devices and the network, which the AI uses to make decisions and drive actions.
NEW QUESTION # 95
Your organization currently uses Access Assurance for 802.1X authentication of wireless users using user certificates. All users are currently placed in the same VLAN after authentication.
There are multiple VLANs at your sites.
In this scenario, how would you configure Access Assurance to make the network more secure?
Answer: C
Explanation:
Juniper Mist Access Assuranceprovidescloud-based network access control (NAC)by integratingRADIUS
,identity-based policy enforcement, andWxLAN role-based segmentation. It allows administrators to assign users and devices to specific VLANs or network segments dynamically based on authentication attributes, thereby improving bothsecurityandpolicy granularity.
According to theJuniper Mist Access Assurance Configuration Guide, to enhance network security in a multi-VLAN environment, you should:
"Use EAP-TLS (certificate-based authentication) for secure user identification, and dynamically assign WxLAN roles or VLANs based on Active Directory (AD) group membership." Here's whyDis correct:
* EAP-TLSensuresmutual authenticationbetween client and RADIUS server using digital certificates
- preventing credential theft or spoofing.
* Integrating withActive Directoryallowsrole-based access control (RBAC), enabling dynamic VLAN or WxLAN assignment. This ensures users from different groups (e.g., staff, contractors, guests) are automatically segmented into appropriate network zones.
Option breakdown:
* A (MAB): Used for non-802.1X devices (e.g., printers), less secure for user authentication.
* B (EAP-TTLS): Username/password-based and less secure than certificate-based EAP-TLS.
* C (Host authentication): Verifies devices only, not user identity-insufficient for user-level control.
Therefore, the most secure and scalable configuration is:
#D. Configure user authentication using EAP-TLS and assign WxLAN roles based on AD user group.
References:- Juniper Mist Access Assurance Deployment and Configuration Guide- Juniper Mist Cloud NAC and 802.1X Authentication Documentation- Juniper Mist Secure Access and WxLAN Role-Based Policy Guide
NEW QUESTION # 96
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