86 Exam Questions for JN0-460 Updated Versions With Test Engine
Pass JN0-460 Exam with Updated JN0-460 Exam Dumps PDF 2026
NEW QUESTION # 41
Whichtwo elementsare required for abrownfield adoption?(Choose two.)
- A. Internet connectivity
- B. an imported Configuration Template
- C. Outbound UDP 1280 access
- D. DNS resolution
Answer: A,D
Explanation:
Abrownfield adoptionin Mist AI refers to onboarding existing Juniper switches (with existing configurations) into the Mist Cloud for management and monitoring. For the switch to connect successfully, it must be able to reach Mist Cloud services usingDNSandInternet connectivity.
"To onboard existing (brownfield) switches into Mist Cloud, the device must have outbound Internet connectivity and DNS resolution to discover Mist Cloud service endpoints." Option A:Correct- DNS is required for the switch to resolve Mist Cloud URLs.
Option B:Correct- Internet access is required for registration and telemetry exchange.
Option C:Incorrect - templates can be applied later but are not required for adoption.
Option D:Incorrect - Mist uses TCP ports 2200 or 443, not UDP 1280.
References:
Juniper Mist AI for Wired - Brownfield Adoption Guide
Juniper Mist AI for Wired - Cloud Connectivity Requirements
Juniper Mist Cloud - Device Onboarding Workflow
NEW QUESTION # 42
Which statement is correct about the VXLAN data plane?
- A. The data plane advertises the MAC addresses of end-user devices.
- B. The data plane learns the MAC addresses of end-user devices.
- C. The data plane encapsulates the traffic.
- D. The data plane learns the IP addresses of end-user devices.
Answer: C
Explanation:
VXLAN (Virtual Extensible LAN) uses an overlay encapsulation method to carry Layer-2 frames over an IP underlay. This functionality is part of the data plane, which is responsible for packet forwarding and encapsulation/decapsulation.
"In an EVPN-VXLAN fabric, the control plane (via BGP EVPN) learns and advertises MAC and IP information, while the data plane encapsulates and forwards traffic using VXLAN tunnels between VTEPs." Option A is incorrect: IP learning happens in the control plane, not the data plane.
Option B is incorrect: MAC advertisement is done in the control plane through EVPN route types.
Option D is incorrect: MAC learning is handled by EVPN control plane, not the VXLAN data plane.
Option C is correct: the VXLAN data plane encapsulates the traffic in UDP tunnels between VTEPs.
References:
Juniper Mist AI for Wired - EVPN-VXLAN Overview
Juniper Validated Design - EVPN-VXLAN Control and Data Plane Separation Junos OS EVPN-VXLAN Deployment Guide
NEW QUESTION # 43
Which three switch testing tools are available when using Wired Assurance?(Choose three.)
- A. ping
- B. load factory-default
- C. cable test
- D. iPerf
- E. bounce port
Answer: A,C,E
Explanation:
According toJuniper Mist Wired Assurance documentation, three built-in diagnostic tools available for testing switch functionality areBounce Port,Ping, andCable Test.
Bounce Portallows you to disable and re-enable a port to reset connectivity.
Pingverifies Layer 3 reachability between the switch and target IPs.
Cable Testperforms diagnostics to detect wiring faults, impedance mismatches, or cable lengths.
These tools are accessed directly from theSwitch Testing Toolssection in the Mist dashboard and are available for EX Series and QFX Series switches onboarded to the Mist cloud.
References:Juniper Mist Wired Assurance - Switch Testing Tools Documentation
NEW QUESTION # 44
How does VXLAN improve Layer 2 tunneling compared to traditional VLANs?
- A. By enforcing stricter security policies
- B. By decreasing tunneling overhead
- C. By offering a larger namespace for segment IDs
- D. By reducing the maximum frame size
Answer: C
NEW QUESTION # 45
You're designing a network for university with more than 20,000 students and various departments spread across multiple buildings. They prioritize high scalability and efficient east-west communication between departments.
In this scenarios, which IP-Clos architecture should be used?
- A. Campus Fabric Core-Distribution
- B. 3-stage IP-Clos
- C. 5-stage IP-Clos
- D. Collapsed Core
Answer: C
NEW QUESTION # 46
Whichservice level expectation (SLE)metric measures congestion on theuplink interfaceof a switch?
- A. Asymmetric Uplink
- B. Throughput
- C. Switch Health
- D. Successful Connect
Answer: A
Explanation:
Juniper Mist'sWired Assuranceincludes multipleSLE metricsthat monitor the health and performance of wired connections. One of these isAsymmetric Uplink, which measuresuplink congestion or imbalancebetween the transmit (TX) and receive (RX) rates on the switch uplink interfaces.
"The Asymmetric Uplink SLE monitors congestion and traffic imbalance on the switch's uplink ports. It identifies when the uplink bandwidth utilization or transmit/receive rates are inconsistent with expected patterns, indicating congestion or flow asymmetry." Option A (Successful Connect):Tracks client connection success rate, not uplink congestion.
Option C (Throughput):Relates to end-to-end data transfer rate, not specifically uplink congestion.
Option D (Switch Health):Measures hardware, software, and PoE health, not link congestion.
Option B (Asymmetric Uplink):Correct- this SLE directly reflectsuplink interface congestion or imbalance.
References:
Juniper Mist AI for Wired - Wired SLE Metrics Overview
Juniper Mist AI for Wired - Asymmetric Uplink SLE Description
Juniper Mist Documentation - Troubleshooting with SLE Analytics
NEW QUESTION # 47
Which component performsVXLAN encapsulation and de-encapsulation?
- A. VLAN
- B. VTEP
- C. WXLAN policy
- D. root bridge
Answer: B
Explanation:
In anEVPN-VXLANarchitecture, theVXLAN Tunnel Endpoint (VTEP)is responsible for encapsulating and de-encapsulating Layer 2 Ethernet frames into VXLAN packets that traverse the IP underlay.
"Each device participating in a VXLAN overlay operates as a VXLAN Tunnel Endpoint (VTEP). The VTEP encapsulates Ethernet frames into VXLAN headers for transmission and de-encapsulates VXLAN packets back into Ethernet frames upon receipt." Option A:Incorrect - VLAN is a Layer 2 construct, not responsible for encapsulation.
Option B:Correct- VTEP handles VXLAN encapsulation and de-encapsulation.
Option C:Incorrect - root bridge pertains to STP, not VXLAN.
Option D:Incorrect - WXLAN policy is not a valid networking term in Juniper documentation.
References:
Juniper Mist AI for Wired - EVPN-VXLAN Overview
Junos OS EVPN-VXLAN Deployment Guide
Juniper Validated Design - VXLAN Tunnel Endpoint (VTEP) Functionality
NEW QUESTION # 48
You have two sites connected to an EVPN network. Each site is using the172.16.1.0/24network for its own respective site.
How does EVPN prevent overlap in this scenario?
- A. It elects a designated forwarder.
- B. It uses a route distinguisher.
- C. It uses a Layer 2 gateway.
- D. It uses an Ethernet segment identifier (ESI).
Answer: B
Explanation:
EVPN, when used with VXLAN, leveragesBGP MPLS/VXLAN control plane mechanisms. To prevent overlapping IP prefixes between different tenants or sites, EVPN uses aRoute Distinguisher (RD).
"In EVPN-VXLAN, the route distinguisher (RD) makes routes unique when overlapping IP prefixes or MAC addresses are advertised between multiple tenants or sites." Option A(designated forwarder) applies to multi-homing in EVPN, not prefix uniqueness.
Option B(Layer 2 gateway) does not prevent IP overlap; it bridges VLANs.
Option D(ESI) is used for identifying multi-homed Ethernet segments, not to differentiate overlapping subnets.
Option C(Route Distinguisher) is correct, as it uniquely identifies routes even if the IP addresses are the same across sites.
References:
Juniper Mist AI for Wired - EVPN-VXLAN Overview
Juniper Validated Design - EVPN-VXLAN Fundamentals
Junos OS EVPN Configuration Guide
NEW QUESTION # 49
You are experiencing issues with your video streams. In this scenario, which SLE and classifier should you inspect to see if BUM traffic is a problem?
- A. Throughput Storm Control
- B. Successful Connect --> Authentication
- C. Throughput Congestion
- D. Throughput -> Interface Anomalies
Answer: A
Explanation:
According to Juniper Mist documentation, the Throughput Service Level Expectation (SLE) is the primary metric used to measure the ability of wired clients to pass traffic across the physical network without impedance. This SLE is critical for diagnosing issues with real-time, high-bandwidth applications such as video streams, which are highly sensitive to packet loss and latency. Within the Throughput SLE, the Storm Control classifier is specifically designed to identify "bad user minutes" caused by the suppression of Broadcast, Unknown Unicast, and Multicast (BUM) traffic.
Storm control is a mechanism that enables the switch to monitor traffic levels and drop BUM packets when a specified traffic level-known as the storm control level-is exceeded. This prevents a "traffic storm" from proliferating and degrading the overall performance of the LAN. While this is a vital security feature to prevent network meltdowns, it can inadvertently impact legitimate traffic. For instance, if multicast-based video streams or other heavy BUM traffic exceed the configured bandwidth percentage on a port, the switch will drop those packets to protect the rest of the network.
When troubleshooting video stream issues, network administrators should inspect the Storm Control classifier to see if it is triggering "bad user minutes". If the Mist dashboard indicates failures under this classifier, it signifies that the switch hardware is actively dropping packets because the BUM traffic limit has been reached. This provides immediate root-cause evidence, allowing the administrator to determine if they need to adjust the storm control thresholds within the Port Profile or investigate the source of the excessive broadcast traffic. By correlating these hardware-level events with the end-user experience, Mist AI simplifies the resolution of complex performance problems that traditional "up/down" monitoring would miss.
NEW QUESTION # 50
You are planning to deploy a new campus fabric. This campus will have a significant amount of east-west traffic. All access switches will only be operating at Layer 2. In this scenario, which architecture should you deploy?
- A. campus fabric IP Clos
- B. campus fabric core-distribution with edge-routed bridging (ERB)
- C. campus fabric core-distribution with centrally-routed bridging (CRB)
- D. campus EVPN multihoming
Answer: B
Explanation:
According to Juniper Networks' validated designs for campus fabrics, the campus fabric core-distribution with edge-routed bridging (ERB) is the optimal architecture when high volumes of east-west traffic are present and access switches are restricted to Layer 2 operations. In an ERB design, the EVPN-VXLAN fabric extends from the core switches to the distribution switches.1 The critical differentiator is the placement of the default gateways (Integrated Routing and Bridging or IRB interfaces). In the ERB model, these gateways are moved from the core to the distribution layer, which effectively acts as the "edge" of the EVPN fabric.
By placing the Layer 3 gateways at the distribution layer, inter-VLAN (east-west) traffic is routed closer to the endpoints.2 This prevents the "hairpinning" effect found in Centrally-Routed Bridging (CRB) architectures, where traffic must travel all the way to the core layer to be routed between subnets before returning down to the distribution and access layers. This reduction in latency and core-link utilization is essential for modern campus environments with high server-to-server or client-to-client traffic patterns.
Furthermore, this architecture specifically accommodates Layer 2 access switches. In the ERB core- distribution model, the access switches are not part of the EVPN-VXLAN overlay; instead, they connect to the distribution tier using standard Link Aggregation Control Protocol (LACP) or ESI-LAG. This allows organizations to leverage existing legacy or lower-tier access switches that do not support advanced VXLAN capabilities while still benefiting from a robust, scalable EVPN-VXLAN fabric at the distribution and core layers.5 In contrast, while the campus fabric IP Clos also excels at handling east-west traffic, it requires the access switches themselves to perform VXLAN encapsulation/decapsulation (acting as VTEPs), which contradicts the requirement for access switches to operate only at Layer 2.
NEW QUESTION # 51
The use of templates in Wired Assurance provisioning facilitates:
- A. Decreased network performance
- B. Increased manual configuration errors
- C. Reduced network visibility
- D. Standardization and scalability of network configurations
Answer: D
NEW QUESTION # 52
WhichAPIis used within theJuniper Mist solution?
- A. RPC
- B. JSON
- C. SOAP
- D. REST
Answer: D
Explanation:
Juniper Mist Cloud uses anopen RESTful API frameworkfor integration, automation, and programmability across all Mist services, includingWired Assurance,Marvis, andAI-driven automation.
"All Mist Cloud services are built on a 100% open REST API framework, allowing customers to automate configuration, monitoring, and troubleshooting through standard REST calls." The REST API exchanges data inJSONformat, but the API type itself isREST, not JSON.
Option A (REST):Correct- Mist services expose 100% REST-based APIs.
Option B (SOAP):Incorrect - SOAP is an older XML-based protocol not used in Mist.
Option C (JSON):Incorrect - JSON is thedata format, not the API type.
Option D (RPC):Incorrect - not used in the Mist Cloud architecture.
References:
Juniper Mist AI for Wired - API Overview
Juniper Mist API Developer Documentation
Juniper Mist AI Cloud - Automation and Integration Guide
NEW QUESTION # 53
You are asked to configure switch ports to VLANs depending on which type of device is connected to it.
Which Mist feature will accomplish this task?
- A. select switch configuration
- B. bulk upload of switch configuration
- C. site variables
- D. dynamic port configuration
Answer: D
Explanation:
According to Juniper Mist documentation, Dynamic Port Configuration (DPC)-also referred to as Dynamic Port Profiles-is the feature specifically designed to automate the assignment of VLANs and port settings based on the type of device connected to a switch. This technology enables the concept of "colorless ports," where any device (such as a Juniper Mist Access Point, an IP camera, or a VoIP phone) can be plugged into any available switch port without prior manual configuration.
The system functions by using "port assignment rules" that leverage various device properties to identify the connected hardware. These properties include LLDP attributes (System Name, Chassis ID, or Description), MAC addresses (including specific OUI ranges), and RADIUS attributes. For example, a rule can be configured to detect an LLDP System Description starting with "Mist Systems" and automatically apply a
"Wireless AP" port profile. This profile typically includes the management VLAN, PoE settings, and Spanning Tree Protocol (STP) parameters required for an access point to function.
The primary benefit of DPC is the reduction of manual labor and the elimination of configuration errors in large-scale deployments. In traditional environments, an administrator would have to manually assign a VLAN to a specific physical port; with DPC, the Juniper Mist cloud detects the device and pushes the relevant configuration to the switch in real-time. If the device is disconnected, the port can be configured to revert to a "restricted" or "guest" VLAN, ensuring that the network remains secure against unauthorized access. This AI-driven approach drives consistency across multiple sites while significantly streamlining the onboarding of new hardware.
NEW QUESTION # 54
Which two statements are correct aboutJuniper Mist Dynamic Packet Capture? (Choose two.)
- A. It is automatically attached to a client event displayed on the Insights page.
- B. It must be globally configured at the organization level.
- C. No configuration is necessary for Mist's Dynamic Packet Capture.
- D. It is automatically attached to the Affected Items list in the Successful Connects SLE.
Answer: A,C
Explanation:
Dynamic Packet Capture (DPC)requires no manual setup.
It is automatically linked to relevantclient eventson theInsights page, enabling fast root-cause analysis without extra configuration.
References:
Mist AI for Wired - Dynamic Packet Capture Overview
Mist Insights and Troubleshooting Guide
NEW QUESTION # 55
Click the Exhibit button.
Which two statements are correct about the switch shown in the exhibit? (Choose two.)
- A. The Junos OS version on this switch is compliant with the other switches in the organization.
- B. The Junos OS version on this switch is not compliant with the other switches in the site.
- C. PoE is enabled.
- D. The Mist APs are connected to ge interfaces.
Answer: B,C
Explanation:
According to the provided exhibit, several visual indicators confirm the operational status and compliance of the EX4100-48MP switch within the Juniper Mist dashboard1.
First, the statement that PoE is enabled is verified by multiple sections of the dashboard2. In the Front Panel view, several ports display a green icon representing a wireless access point, and the PoE status indicator in the top right is lit green, indicating the subsystem is active. Furthermore, the Statistics panel shows a "Total Power Draw" of 48.40 W, and the Metrics section displays "100% PoE Compliance," confirming that the switch is successfully delivering Power over Ethernet to connected devices such as the three Mist APs listed in the summary.
Second, the exhibit indicates that the Junos OS version on this switch is not compliant with the other switches in the site5. This is explicitly shown in the Metrics section, where the Version Compliance tile is highlighted in red with a value of 0%6. In the Mist AI-driven interface, a red compliance tile signifies that the current software version running on the device (identified as 23.2R1.13 in the Properties panel) does not match the "Configured Version" or the "Approved Version" set at the Site or Organization level.
The other options are incorrect based on the visual evidence. While Mist APs are connected, the Front Panel shows them connected to 2.5GbE (mGig) ports (ports 0, 2, 8, etc.) and standard 1GbE ports, not specifically just "ge" interfaces in a traditional sense8. Additionally, the 0% Version Compliance score directly contradicts the idea that the switch is compliant with the organization's standards.
NEW QUESTION # 56
Which configuration step is required to create a network in Juniper Mist Wired Assurance?
- A. Create a unique access policy.
- B. Create a unique port profile.
- C. Name the VLAN and corresponding VLAN ID.
- D. Enable traffic steering.
Answer: C
Explanation:
According to the Juniper Mist Wired Assurance Configuration Guide, the foundational step for implementing Layer 2 segmentation within the Mist UI is the creation of a "Network". In the context of Mist Wired Assurance, a Network is logically synonymous with a Virtual Local Area Network (VLAN). To define a network, a user must navigate to the Networks section-located within an organization-level template, a site- level configuration, or an individual switch configuration-and click to add a new entry.
The two mandatory parameters for this step are naming the VLAN and providing the corresponding VLAN ID. The name serves as a human-readable alias (such as "Corporate_Data" or "IoT_Devices") that allows administrators to easily reference the segment across different parts of the configuration without constantly tracking numeric IDs. The VLAN ID is the specific numeric value (ranging from 1 to 4094) that will be used by the switch for 802.1Q tagging on the physical wire.
This step is a prerequisite for more advanced configurations. Once a network is created with its name and ID, it can then be selected within a Port Profile. While creating a port profile (Option C) or an access policy (Option D) are common tasks in the deployment workflow, they are dependent on the prior existence of a defined Network. For instance, a Port Profile defines how a port behaves (e.g., access vs. trunk), but it must point to a specific Network name to know which VLAN to assign to that interface. Similarly, site variables can be used to override these VLAN IDs at specific locations, but the base definition requires the initial pairing of a name and a default ID in the portal.
NEW QUESTION # 57
Referring to the exhibit, which statement is correct about thePost-Install user's role?
- A. It has full access to all sites.
- B. It is used for help-desk monitoring and workflow for all sites.
- C. It has read-only access to all sites.
- D. It has access limited to installing APs and switches at all sites.
Answer: D
Explanation:
ThePost-Install (Installer)role has minimal access-sufficient only toclaim APs or switches, assign or unassign them, and place them on maps.
It cannot unclaim or remove devices and typically expires after installation.
References:
Mist AI Mobile App Documentation - Installer and Post-Install Roles
Juniper Mist AI Access Control Guide
NEW QUESTION # 58
You are asked to deploy a5-stage IP Clos campus fabricusingclaim codesfor all of the switches.
Whichtwo statementsare correct about this process?(Choose two.)
- A. The switches must be assigned to the site where you plan to deploy the campus fabric.
- B. The switches must be online when you begin the Campus Fabric wizard.
- C. The switches do not need to be online when you begin the Campus Fabric wizard.
- D. The switches do not need to be assigned to the site where you plan to deploy the campus fabric.
Answer: A,B
Explanation:
Duringcampus fabric deploymentin Mist AI, switches are onboarded usingclaim codesand must beassigned to the correct siteandonlineso that Mist can push configurations and validate connectivity.
"All switches to be included in a campus fabric must be claimed, online, and assigned to the target site before launching the Campus Fabric wizard. Mist Cloud automatically discovers their roles and builds the topology." Option A:Incorrect - switches must be site-assigned before fabric creation.
Option B:Correct- switches must beonlineto receive configurations from Mist.
Option C:Incorrect - offline devices cannot be configured or validated in the fabric wizard.
Option D:Correct- switches must beassigned to the correct sitefor topology creation.
References:
Juniper Mist AI for Wired - Campus Fabric IP Clos Deployment Guide
Juniper Mist AI for Wired - Campus Fabric Onboarding Requirements
Juniper Validated Design - Campus Fabric Claiming and Site Assignment
NEW QUESTION # 59
A customer has purchased five new switches and assigned them to a site.
In the configuration hierarchy, how should a user configure thename or roleof each switch?
- A. Configure additional CLI commands on each switch.
- B. Configure names and roles on the site-specific configuration.
- C. Add names and roles of each switch to the organization-level templates.
- D. Configure each switch individually on the Switch Configuration menu under the Switches menu.
Answer: D
Explanation:
InJuniper Mist Cloud, configuration hierarchy includesorganization-level templates,site-level configurations, andindividual switch configuration. Site and organization levels provide shared settings, while per-device details such as hostname or role are set individually.
"Device-specific attributes such as hostname, role, or management IP are configured under the individual switch configuration menu. Templates and site configurations apply globally, while individual configurations override device-level parameters." Option A:Incorrect - site configuration applies to all switches at a site, not unique details.
Option B:Incorrect - CLI configuration is not used when switches are managed by Mist Cloud.
Option C:Correct- each switch's name and role are configured individually underSwitches # Switch Configuration.
Option D:Incorrect - organization templates define global settings, not per-switch names.
References:
Juniper Mist AI for Wired - Configuration Hierarchy and Device Settings Juniper Mist Cloud - Switch Configuration and Role Assignment Guide Juniper Mist Wired Assurance - Device Management Overview
NEW QUESTION # 60
What is the primary benefit of using switch configuration templates?
- A. They reduce Junos OS upgrade times.
- B. They improve the performance of switches.
- C. They provide a consistent configuration for all switches in an organization.
- D. They make it easier to make switch-specific configuration changes.
Answer: C
Explanation:
InJuniper Mist AI for Wired, configuration templates are a foundational part ofswitch onboarding and management. The primary purpose of these templates is to ensure configuration consistency across all switches that belong to a specific site or organization.
"Switch configuration templates allow administrators to define a standard configuration that is automatically applied to all switches within a site or organization, ensuring consistency and reducing configuration errors." Templates can contain base configuration parameters such as NTP, syslog, VLANs, port profiles, and authentication settings. When new switches are onboarded to the Mist Cloud, they automatically inherit the template's configuration, ensuring uniform behavior across the network fabric.
Option Ais incorrect - templates do not directly impact hardware performance.
Option Bis incorrect - templates are not related to upgrade times.
Option Cis incorrect - templates are used for uniformity, not for switch-specific changes.
Option Dcorrectly describes their main benefit -ensuring consistent configuration across all switches.
References:
Juniper Mist AI for Wired - Switch Configuration Templates Guide
Juniper Mist AI for Wired - Wired Assurance Administration Guide
Juniper Validated Design - Mist Wired Configuration Best Practices
NEW QUESTION # 61
Which statement is true regarding an EVPN-VXLAN overlay?
- A. You must configure IGMP.
- B. Only the edge devices need to support VXLAN
- C. It requires the use of PIM to forward BUM traffic.
- D. Every device along the forwarding path must support and participate in VXLAN.
Answer: B
NEW QUESTION # 62
How many days of data does the Mist cloud service store?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 63
In the context of wired assurance, what role do templates play?
- A. Expanding the wireless coverage
- B. Standardizing device configurations
- C. Encrypting network traffic
- D. Increasing the network's bandwidth
Answer: B
NEW QUESTION # 64
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