Last JN0-253 practice test reviews Practice Test Juniper dumps [Q54-Q77]

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Last JN0-253 practice test reviews: Practice Test Juniper dumps

Try JN0-253 Free Now! Real Exam Question Answers Updated [Aug 04, 2026]

Juniper JN0-253 Exam Syllabus Topics:

主题	详细信息
主题 1	Juniper Mist Configuration Basics: This domain addresses initial setup including user accounts, device onboarding, organizational structures, subscription licensing, certificate management, and automated provisioning with labels and policies.
主题 2	Juniper Mist Network Operations and Management: This domain examines operational features across Wi-Fi, Wired, WAN, Routing, and Access Assurance, delivering specialized management capabilities for different network infrastructure layers.
主题 3	Juniper Mist Monitoring and Analytics: This domain focuses on monitoring tools including service-level expectations, packet captures, AI-driven insights, automated alerts, and audit logs for comprehensive network visibility.
主题 4	Juniper Mist Cloud Fundamentals: This domain covers Juniper’s cloud-native platform architecture, focusing on AI and machine learning capabilities for intelligent network management and real-world deployment scenarios.
议题 5	Juniper Mist Cloud Operations: This domain covers three API types (RESTful, WebSocket, Webhook) for programmatic integration, plus support resources including ticketing systems and documentation.

第 54 号 Exhibit:

Referring to the exhibit, which sub-classifier contributed the most to capacity issues?

WiFi Interference

Capacity

Network Issues

Excessive Client Load

In theJuniper Mist Wireless Assurance dashboard, eachService Level Expectation (SLE)is broken down intosub-classifiersto identify the specific causes of degraded user experience. For theCapacity SLE, Mist AI analyzes performance indicators related to access point utilization, airtime availability, client density, and radio congestion.
According to theJuniper Mist Wireless Assurance Analytics Guide, sub-classifiers within the Capacity SLE may include:
* WiFi Interference- measures co-channel and adjacent-channel interference.
* Capacity- monitors total bandwidth and airtime utilization.
* Network Issues- highlights backend transport or switching congestion.
* Excessive Client Load- indicates when too many clients are associated with a single access point or radio, leading to reduced throughput and contention.
In the exhibit, theExcessive Client Loadbar clearly shows the highest contribution to the Capacity SLE degradation. This means that the majority of capacity issues were caused byan overloaded access point or radio channelhandling more clients than optimal.
Therefore, the correct answer isD. Excessive Client Load.
References:- Juniper Mist Wireless Assurance SLE and Classifier Documentation- Juniper Mist AI Operations and Analytics Guide- Juniper Mist Cloud Dashboard Metrics Overview

第 55 号 What does the Predictive Analytics and Correlation Engine (PACE) of Mist AI use to understand the end-user experience?

machine learning

manual analysis

user feedback

network monitoring tools

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.

NO.56 You scheduled downtime to push the latest firmware to all the APs you deployed at the site. You verified that all of the APs are working fine. When you go back to work, you notice no complaints from the users. When you check the AP page, you notice that several APs have not rolled out with the latest firmware.
In this scenario, how does Marvis categorize this issue in the Marvis Action dashboard?

The non-compliant Marvis Action is displayed.

The high CPU Marvis Action is displayed.

The missing VLAN Marvis Action is displayed.

The port flap Marvis Action is displayed.

When several APs fail to update to the latest firmware during a scheduled downtime, Marvis categorizes this issue as a “non-compliant” action.
This categorization indicates that some APs are not adhering to the intended firmware version policy, which could potentially affect network performance or security. The non-compliant Marvis Action provides administrators with the necessary information to identify and rectify the issue, ensuring all APs are updated as required.

NO.57 When browsing the Marvis Actions page, you notice that something has triggered the “AP Offline” Marvis Action. You click on that action.
What information will you see displayed? (Choose two.)

Marvis Action status

resolved action

Mist support ticket status

recommended action

When browsing the Marvis Actions page and you click on the “AP Online” Marvis Action, you will see:
Marvis Action Status: This indicates the current state of the action, whether it is in progress, resolved, or another status.
Recommended Action: Marvis will provide a suggested course of action to resolve the issue. This could include steps like configuration changes or other remedial actions.

NO.58 Which two features does a Marvis VNA subscription add to the support ticket creation experience? (Choose two.)

escalation

in-context AI-assisted troubleshooting

configuration assistance

AI-generated response

In-context AI-assisted troubleshooting provides guidance directly within the ticket creation workflow to help identify and resolve issues.
AI-generated responses suggest potential solutions automatically based on historical data and Mist AI insights.

第 59 号 What is the maximum number of nodes supported in a Mist Edge high availability cluster?

two nodes

three nodes

ten nodes

unlimited nodes

A Mist Edge high availability cluster supports a maximum of two nodes. This allows for redundancy and failover in case one of the nodes goes down.

NO.60 Which Juniper Mist feature provides visibility into BGP operations for MX Series routers?

Wired Assurance

Routing Assurance

Access Assurance

WAN Assurance

The feature that provides deep visibility into BGP operations for MX Series routers is Routing Assurance.
According to official Juniper documentation: “Juniper Mist Routing Assurance provides insights about…
routing, including routing events, routing protocol states, peer status analysis, routes, and more” for supported routers such as Juniper MX and ACX series. Routing Assurance extends Mist AI observability and analytics into the routing fabric, offering real-time visibility and telemetry for BGP peering session health, routing tables, events, path changes, and other core routing metrics. This empowers network operators with actionable insights and root cause analysis capabilities to maintain optimal WAN and core routing performance from the Mist cloud. Wired Assurance focuses on switch and port health and is not designed for routing protocol visibility.
参考资料
Juniper Mist Routing Assurance Datasheet; Product Description

第 61 号 Click the Exhibit button.

Referring to the exhibit, how many Marvis for Wireless subscriptions have been purchased and onboarded?

103

In the exhibit, the Marvis for Wireless subscription shows usage as 21 of 82. The second number (82) indicates the total number of subscriptions purchased and onboarded, while the first number (21) represents the number currently in use.

第 62 号 Which three categories of alert types are available in Juniper Mist? (Choose three.)

Marvis

Users

Site

Infrastructure

安全

Marvis alerts provide AI-driven insights and notifications.
Site alerts relate to site-level issues and configurations.
Infrastructure alerts cover hardware and system-related conditions (APs, switches, gateways).

NO.63 In the Mist UI, what are two Marvis Actions for the AP category? (Choose two.)

Coverage Hole

Health Check Failed

MTU Mismatch

High CPU

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.

NO.64 Which two configuration elements are available in a WLAN template? (Choose two.)

organizations

template policies

radio management

WLANs

Radio management can be configured in a WLAN template to control RF settings.
WLANs themselves are defined within the template, allowing you to standardize SSIDs and related settings across sites.

第 65 号 Which statement accurately describes the capabilities of the Juniper Mist AI platform?

Marvis requires substantial user interaction for troubleshooting and does not provide proactive solutions.

Juniper Mist AI uses Predictive Analytics and Correlation Engine (PACE) to collect and analyze pre-connection and post-connection user and location states in near real-time.

Juniper Mist AI relies solely on manual data collection for network health solutions and root cause analysis, without using AI algorithms.

The Mist Cloud is not involved in the aggregation and storage of data required by the AI/ML solution, limiting its effectiveness.

Juniper Mist AI, through PACE, continuously gathers and correlates data from users, devices, and locations, both pre- and post-connection, to provide real-time insights, proactive troubleshooting, and predictive analytics for network performance optimization.

NO.66 Which statement correctly describes the purpose of Juniper Mist “Virtual BLE” (vBLE)?

vBLE uses Wi-Fi radios to simulate BLE-like location services without dedicated BLE hardware.

vBLE is a hardware-only feature requiring a physical BLE controller.

vBLE completely replaces the need for RF site surveys.

vBLE only functions when APs are connected to Mist Edge.

Virtual BLE (vBLE) leverages the AP’s integrated BLE array combined with machine learning algorithms to provide accurate location services, effectively creating a “virtual” indoor GPS-like capability. This is part of Mist’s overall location engine, providing granular location data without requiring extensive additional dedicated infrastructure.

NO.67 Which unit of measurement is used for capacity, coverage, and throughput SLEs?

throughput in Mbps

percentage of channel utilization

signal strength in dBm

percentage of user minutes

For capacity, coverage, and throughput Service Level Expectations (SLEs) in Mist AI, throughput is measured in Mbps. This unit measures the rate at which data is successfully delivered over the wireless network, providing a clear indication of network performance and user experience. Mist AI tracks these metrics to ensure the network meets the required performance standards.

NO.68 Your manager asks you to set up a new WLAN that is Open Access and does not allow any connected clients to communicate with each other.
From the WLAN configuration, which feature would you use to separate the clients?

Hide SSID.

Configure isolation.

Filter ARP.

Configure geofence.

To set up a new WLAN that is Open Access and prevents connected clients from communicating with each other, you should use the Configure Isolation feature. This feature, often referred to as client isolation, ensures that each client can only communicate with the access point and not with other clients on the same WLAN.

第 69 号 Which two statements are true about Juniper Mist Wireless Assurance Radio Resource Management (RRM)? (Choose two.)

RRM tuning happens automatically.

RRM builds the channel plan based on a real-time assessment of the network.

RRM tuning is a manual process that you must initiate every day.

RRM builds the channel plan based on the physical distance between the APs.

Real-time Assessment: Juniper Mist’s Radio Resource Management (RRM) builds the channel plan based on real-time network assessments. It dynamically adjusts to changing conditions in the RF environment, ensuring optimal performance by continuously monitoring factors such as interference, client distribution, and usage patterns. Automatic Tuning: RRM tuning happens automatically. Mist AI leverages reinforcement learning to continually optimize RF settings without manual intervention, adjusting channels, power levels, and other parameters in real-time to maintain optimal network performance.

NO.70 Under which category would you identify bad cables using Marvis Actions?

连接性

security

Layer 1

Clients

Bad cables are identified under the Layer 1 category within Marvis Actions. Juniper Mist’s documentation states: “Use the Actions dashboard to resolve Layer 1 issues. When you click the Layer 1 button on the Action dashboard, all available Layer 1 actions appear. This category currently contains only one action: bad cable.” Marvis can detect and alert for bad cables based on frame errors, link statistics, and AP/Switch behavior, all under the Layer 1 category. Connectivity, security, and client issues are handled under their respective action categories, but bad cabling is specifically monitored and detected as a physical (Layer 1) fault.
Reference:Layer 1 Actions | Mist , Marvis AI Operations Guide

第 71 号 Which statement is true about wireless security?

Juniper APs use the BLE radio to scan for rogue and honeypot APs.

Juniper APs have a dedicated radio to scan for rogue and honeypot APs.

Juniper APs use the 5-GHz radio to scan for rogue and honeypot APs.

Juniper APs use the 2.4-GHz radio to scan for rogue and honeypot APs.

The correct statement is that Juniper APs have a dedicated radio to scan for rogue and honeypot APs. The official Juniper Mist documentation specifies: “Juniper APs include a dedicated scanning radio to detect rogue, neighbor, and honeypot APs and their clients… The dedicated scanning radios operate on 2.4, 5, and 6 GHz Wi-Fi bands.” This third radio operates independently from the client-serving radios and enables continuous threat detection on all Wi-Fi bands, enhancing security and allowing real-time performance adjustments. BLE radios are used for location-based services and asset tracking, not for rogue AP detection.
Client-serving radios can also scan, but detection is always enabled and optimized by the dedicated radio.
Reference:Rogue, Neighbor, and Honeypot Access Points | Mist Juniper Mist Wireless Assurance Configuration Guide

第 72 号 What are two guest portal authentication options in the UI? (Choose two.)

SAML

Sponsored Guest

MAC Authentication

Authentication Code

Sponsored Guest allows visitors to gain access through approval by an internal sponsor.
Authentication Code provides guests with a temporary code to authenticate through the portal.

第 73 号 Which two use cases are popular in location-based services (LBS) deployments? (Choose two.)

SSID scheduling

asset tracking

micro segmentation

way finding

Asset Tracking: Asset tracking is a common use case in LBS deployments, enabling organizations to locate and manage assets in real-time. This is particularly useful in environments like hospitals, warehouses, and large corporate campuses where knowing the precise location of equipment can save time and improve efficiency.
Wayfinding: Wayfinding helps users navigate through complex environments, such as large buildings, airports, and shopping malls. By providing real-time navigation assistance, LBS enhances the user experience and improves accessibility within these spaces.

第 74 号 Which type of machine learning does radio resource management (RRM) use?

cognitive learning

supervised learning

reinforcement learning

unsupervised learning

Juniper Mist Radio Resource Management (RRM) uses reinforcement learning, where the system continuously adapts radio settings (such as channel and power) based on feedback from the environment to optimize wireless performance.

第 75 号 Which statement is correct about the Super User account role?

The Super User role is restricted to the specific sites that are defined when creating the user account.

The Super User role has limited read/write capabilities.

You must use the Super User role to claim an organization’s new AP.

You must use the Super User role to add administrators to an organization.

The Super User role has full administrative privileges across the entire organization, including the ability to manage subscriptions, claim devices, and most importantly, add or manage other administrators.

NO.76 What are two solutions that Juniper Mist Location Services provide? (Choose two.)

asset location

geofencing

wayfinding

GPS location

Juniper Mist Location Services provide asset location and wayfinding. According to official Juniper documentation: “Juniper Mist provides location accuracy for wayfinding, asset visibility, and user engagement,” leveraging cloud-native vBLE and Wi-Fi technologies.
* Asset location enables organizations to locate high-value resources, personnel, or IoT devices in real time with rich analytics, making it easy to find assets and people using the Mist dashboard and APIs.
* Wayfinding gives users turn-by-turn indoor navigation and mapping via mobile SDKs and the Mist cloud.While geofencing can be achieved as part of location-based engagement features, it is not listed as a primary Mist Location Service solution. GPS location is not directly supported; Mist Location Services operate indoors using Wi-Fi and BLE signals, not satellite GPS.
Reference:Juniper Mist Location Services Overview , Indoor Location Services Solution Brief.

第 77 号 Your organization has a Marvis subscription. You have an issue with an access point (AP) that does not power on. You decide to open a support ticket.
In this scenario, what does Marvis do while you are filling in the details on the New Ticket screen?

Marvis creates the support tickets.

Marvis sends an e-mail to [email protected] on your behalf.

Marvis provides links to Internet resources about AP power problems.

Marvis provides possible solutions to AP power problems from the Juniper Mist documentation.

When an administrator begins to open asupport ticketwithin theJuniper Mist portal, theMarvis Virtual Network Assistantproactively assists by presenting relevant, AI-driven recommendations and documentation.
According to theJuniper Mist Marvis Virtual Network Assistant Guide, this process is described as:
“While an administrator creates a support case, Marvis automatically searches the Mist knowledge base and presents probable causes and recommended solutions based on the detected issue type.” If the issue involves anAP that does not power on, Marvis retrieves contextual data such as PoE status, switch port state, and recent telemetry logs, then providesautomated guidance-for example, checking PoE configurations or cable connectivity.
Thus, while the administrator fills in the “New Ticket” details,Marvis provides potential solutions directly from Juniper Mist’s documentation, potentially resolving the issue before a support case is even submitted.
The correct answer isD. Marvis provides possible solutions to AP power problems from the Juniper Mist documentation.
References:- Juniper Mist Marvis Virtual Network Assistant User Guide- Juniper Mist AI Operations and Support Automation Documentation- Juniper Mist Cloud Case Creation and Marvis Integration Overview

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