JN0-460 Dumps To Pass JNCIS-MistAI-Wired Exam in One Day (Updated 86 Questions)
JN0-460 Exam Brain Dumps - Study Notes and Theory
Juniper JN0-460 Exam Syllabus Topics:
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NEW QUESTION # 18
Which statement is correct about theSwitch Insightssection?
- A. Only the top five switch events are available on this page.
- B. The Switch Insights feature is only available for EX Series switches.
- C. A user can view traffic per port on this page.
- D. Users can rollback to a previously known configuration from this page.
Answer: C
Explanation:
TheSwitch Insightssection in the Mist dashboard provides detailed switch telemetry, including interface statistics, port utilization, client count, and traffic analysis. It allows administrators to view real-time and historicaltraffic per port, identify top talkers, and detect anomalies.
"The Switch Insights page displays real-time and historical data such as traffic per port, PoE usage, connected clients, and interface errors for every switch managed by Mist." Option A:Correct- port-level traffic and utilization metrics are visible in Switch Insights.
Option B:Incorrect - available for all Mist-managed switches (EX and supported QFX).
Option C:Incorrect - displays complete event history, not limited to five events.
Option D:Incorrect - configuration rollback is done via the configuration history section, not Switch Insights.
References:
Juniper Mist AI for Wired - Switch Insights Overview
Juniper Mist Wired Assurance - Switch Analytics and Port Utilization Guide Juniper Mist AI Cloud - Switch Telemetry and Event Monitoring
NEW QUESTION # 19
You have deployed your switches and need to provide aunique hostnameon each switch.
Which Mist dashboard option allows you to accomplish this task?
- A. Individual switch configuration
- B. Device profiles
- C. Site switch configuration
- D. Organization switch template
Answer: A
Explanation:
In Juniper Mist Cloud, there are multiple configuration scopes:
Organization-level templatesapply globally.
Site-level configurationapplies across all devices in a site.
Individual switch configurationis used to define unique, device-specific attributes such ashostname, management IP, or local overrides.
"Templates and site-level configuration ensure consistency across devices, whileindividual switch configuration is used to assign unique values such as hostnames." Option A:Incorrect - org templates define common config, not hostnames.
Option B:Incorrect - site configs are shared across all switches in the site.
Option D:Incorrect - device profiles apply settings like port policies or authentication, not hostnames.
Option C:Correct -individual switch configurationis the correct place to assign hostnames uniquely per device.
References:
Juniper Mist AI for Wired - Switch Configuration Hierarchy
Juniper Mist Documentation - Device-Level Configuration in Wired Assurance
NEW QUESTION # 20
What are thetwo ways to forward BUM trafficwhen usingEVPN?(Choose two.)
- A. Use ingress replication.
- B. Use BGP neighborship.
- C. Use static routes.
- D. Use underlay replication.
Answer: A,D
Explanation:
InEVPN-VXLAN,BUM (Broadcast, Unknown unicast, and Multicast)traffic is handled differently than unicast traffic. EVPN provides two main forwarding mechanisms to distribute BUM traffic betweenVTEPs (VXLAN Tunnel Endpoints):
"BUM traffic in EVPN-VXLAN fabrics is replicated using eitheringress replicationorunderlay multicast(PIM- based). Both methods ensure that broadcast and unknown unicast frames reach all remote VTEPs within the same VXLAN segment." Option A:Incorrect - static routes are unrelated to BUM forwarding.
Option B:Incorrect - BGP is thecontrol plane, not a data-plane forwarding method.
Option C:Correct-Ingress replicationreplicates BUM packets to all remote VTEPs in the same VNI using unicast tunnels.
Option D:Correct-Underlay replication (multicast)uses multicast groups in the IP underlay to distribute BUM frames efficiently.
References:
Juniper Mist AI for Wired - EVPN-VXLAN Forwarding Architecture
Junos OS EVPN-VXLAN Deployment and Operations Guide
Juniper Validated Design - EVPN-VXLAN Control and Data Plane Behavior
NEW QUESTION # 21
You are using the Wired Visibility option as your Wired Assurance solution.
In this scenario, which two statements are correct? (Choose two.)
- A. Third party switches are supported.
- B. You must connect a Mist Managed AP to each switch.
- C. All devices are configurable using Mist Al.
- D. You must enable SNMP on all switches.
Answer: A,B
NEW QUESTION # 22
You are using the Wired Visibility option as your Wired Assurance solution. In this scenario, which protocol is used to exchange basic device information between your switches and APs?
- A. LACP
- B. LLDP
- C. Telemetry
- D. SNMP
Answer: B
NEW QUESTION # 23
You want to create a copy of a running configuration on a switch, what's the recommended way to accomplish this using Mist's built-in switch utilities?
- A. Apply Default Templates
- B. Snapshot Device
- C. Create a template
- D. Downlod Junos Config
Answer: B
NEW QUESTION # 24
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. Successful Connect --> Authentication
- B. Throughput Storm Control
- C. Throughput -> Interface Anomalies
- D. Throughput Congestion
Answer: B
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 # 25
Which two statements are correct about theEVPN-VXLAN control plane?(Choose two.)
- A. The control plane rewrites the destination MAC address of the packet.
- B. The control plane encapsulates the traffic.
- C. The control plane learns the IP addresses of end-user devices.
- D. The control plane learns the MAC addresses of end-user devices.
Answer: C,D
Explanation:
In anEVPN-VXLAN fabric, thecontrol planeoperates overBGP EVPNand is responsible for distributing endpoint reachability information (MAC and IP) among VTEPs. Thedata plane, by contrast, performs encapsulation and forwarding.
"The EVPN control plane uses BGP to exchange MAC and IP address reachability information between VTEPs, enabling efficient forwarding and loop prevention without relying on flood-and-learn behavior." Option A:Incorrect - encapsulation occurs in thedata plane, not the control plane.
Option B:Correct - the control plane distributesMAC-to-VTEP mappings.
Option C:Correct - the control plane also distributesIP-to-MAC associations(Type 2 and Type 5 EVPN routes).
Option D:Incorrect - the control plane does not alter packet headers.
References:
Juniper Mist AI for Wired - EVPN-VXLAN Overview
Juniper Validated Design - EVPN Control and Data Plane Operation
Junos OS EVPN-VXLAN Implementation Guide
NEW QUESTION # 26
What is the device that handles the VXLAN encapsulation and decapsulation referred to as?
- A. a VTEP
- B. an LSR
- C. a UNI
- D. an LSP
Answer: A
NEW QUESTION # 27
What advantage does multipath forwarding in EVPN offer for campus networks?
- A. Increases network redundancy and bandwidth
- B. Decreases bandwidth utilization
- C. Simplifies network design by eliminating the need for redundancy
- D. Restricts the use of multiple paths to prevent loops
Answer: A
NEW QUESTION # 28
A system administrator wants toonboard switchesto agreenfield site.
In this scenario, whichthree actionswill accomplish this task?(Choose three.)
- A. Use the Juniper Networks switch serial number.
- B. Use the Juniper Networks system MAC address number.
- C. Use bulk claiming switches from a Juniper Mist sale order.
- D. Use the API to automate autoprovisioning of the switches to Juniper Mist.
- E. Use the Juniper Networks switch QR claim code.
Answer: C,D,E
Explanation:
Forgreenfield onboarding, switches are newly deployed and must be claimed into Mist Cloud. Juniper Mist offers multiple claim options to simplify large-scale onboarding.
"You can claim switches using the device's QR claim code, by bulk importing from a sales order, or through API-based automation for large deployments. Each of these methods securely associates the devices to your organization in Mist Cloud." Option A:Incorrect - serial number alone is not sufficient for claiming.
Option B:Correct- claim codes (QR) uniquely identify switches.
Option C:Correct- bulk claim from a sale order streamlines large deployments.
Option D:Correct- APIs support automated claiming and provisioning workflows.
Option E:Incorrect - MAC address alone cannot be used to claim devices.
References:
Juniper Mist AI for Wired - Switch Onboarding and Claiming Guide
Juniper Mist AI Cloud - Greenfield Deployment and Automation Documentation Juniper Mist Wired Assurance - API-Based Device Provisioning
NEW QUESTION # 29
In the context of VXLAN, what is the role of a VTEP?
- A. To encrypt data traffic
- B. To encapsulate and de-encapsulate VXLAN packets
- C. To decrease network throughput
- D. To route Layer 3 traffic exclusively
Answer: B
NEW QUESTION # 30
What does Juniper Mist's dashboard show for pre-connection metrics compared to post-connection metrics?
- A. Both pre-connection and post-connection metrics concentrate on detecting network errors for comprehensive troubleshooting.
- B. Pre-connection metrics include successful connects and authentication, while post-connection metrics cover network errors.
- C. Pre-connection metrics focus on network errors, while post-connection metrics measure successful connects and authentication.
- D. Pre-connection metrics solely measure throughput, while post-connection metrics detect network errors for simplified troubleshooting.
Answer: B
Explanation:
According to Juniper Mist documentation, Wired Service Level Expectations (SLEs) are designed to provide operational visibility into the wired experience by monitoring Juniper EX and QFX Series switches. These SLEs leverage pre-connection and post-connection performance metrics to ensure network reliability and performance.
Pre-connection metrics are specifically focused on the initial phase of a client's journey to join the network.
These metrics show the total number and the time required for successful connects and authentication. By tracking 802.1X events and DHCP snooping data, Mist can identify if clients are failing to onboard due to RADIUS issues, authentication timeouts, or failures in the DHCP binding process. This allows administrators to proactively address onboarding hurdles before they impact the broader user base.
Post-connection metrics, conversely, measure the network experience once a client is already "on the wire" and attempting to pass data. These metrics primarily measure throughput and focus on detecting various network errors and operational anomalies. Specifically, post-connection monitoring detects issues such as Spanning Tree Protocol (STP) loops, interface errors, and congestion. Additional post-connection insights include identifying cable issues, negotiation failures, and MTU mismatches that might occur during active data transmission.
In summary, Juniper Mist divides its telemetry into these two distinct categories to simplify troubleshooting.
Pre-connection metrics ensure that users can get on the network, while post-connection metrics ensure that the network can sustain their traffic requirements without errors. This combined approach enables the Mist AI- driven Predictive Analytics and Correlation Engine (PACE) to provide a holistic view of the end-user experience, moving beyond traditional "up/down" monitoring to a deeper understanding of the quality of the client experience.
NEW QUESTION # 31
What information doesMistuse to determine if the port is classified as anuplink?(Choose two.)
- A. if the port has an MTU greater than 1500 configured
- B. if the port is an STP root port
- C. if the port has a description configured
- D. if TX and RX are higher than the rest of the ports
Answer: B,D
Explanation:
Juniper Mist automatically classifies ports to simplify visibility and automation withinWired Assurance. The Mist cloud analyzesport telemetryandlink behaviorto determine port roles, including uplinks.
"Mist uses machine learning and switch telemetry to automatically detect uplinks by analyzing traffic behavior and topology information. Uplink ports typically exhibit higher TX/RX utilization and are identified as spanning-tree root or forwarding ports connecting upstream devices." Option A:Correct - Mist examines traffic statistics. Ports with significantly higher TX/RX utilization relative to others are likely uplinks.
Option B:Incorrect - MTU size is not a classification criterion.
Option C:Correct - Mist usesSTP information(root or designated port status) to identify uplinks.
Option D:Incorrect - port description fields are for administrative purposes only and are not used by Mist analytics.
References:
Juniper Mist AI for Wired - Port Role Classification and Telemetry
Juniper Mist AI for Wired - Automated Uplink Detection and Insights
Juniper Wired Assurance Analytics Guide
NEW QUESTION # 32
Click the Exhibit button.
Which role do the devices access1 and access3 fulfill in the overlay network shown in the exhibit?
- A. Virtual Chassis nodes
- B. VNI
- C. L2 gateway
- D. root bridge
Answer: C
Explanation:
According to Juniper Networks' EVPN-VXLAN documentation, devices that perform the encapsulation and de-encapsulation of Ethernet frames into VXLAN UDP packets at the edge of the network are known as Virtual Tunnel Endpoints (VTEPs)1111. In the context of a campus fabric overlay, these devices often function as L2 gateways when they bridge traditional Layer 2 traffic from end-user devices across a Layer 3 IP fabric.
The exhibit demonstrates a 3-stage IP Clos architecture where access1 and access3 are explicitly identified as VTEP endpoints. A VXLAN tunnel is shown originating at access1 and terminating at access3, allowing
"User1" and "Server1"-both located on the same 10.1.1.0/24 subnet-to communicate as if they were on the same physical Layer 2 segment despite being separated by a Layer 3 IP Fabric (172.16.0.0/24). In this scenario, access1 and access3 fulfill the L2 gateway role by mapping the local VLAN traffic to a specific VXLAN Network Identifier (VNI) for transport across the underlay3.
As L2 gateways, these switches maintain the bridge table for the overlay network, learning MAC addresses from local ports and via the EVPN control plane from remote VTEPs4. This architecture allows for seamless Layer 2 mobility and connectivity across complex routed infrastructures while eliminating the need for Spanning Tree Protocol (STP) in the core5555. In contrast, options like "VNI" refer to the segment ID itself rather than a device role, and "root bridge" refers to an STP-specific role that EVPN-VXLAN is designed to move away from in a modern fabric.
NEW QUESTION # 33
What are two prereuisites for creating a campus fabric in Juniper Mist? (Choose two)
- A. Switches msut be claimed.
- B. Switches must be in the Connected state.
- C. Switches must be powered on.
- D. Switches must be assigned to the correct site.
Answer: A,D
NEW QUESTION # 34
What is a distinctive feature of Wired Assurance?
- A. Unlimited data storage for personal use.
- B. Peer-to-peer file sharing capabilities.
- C. Customizable exterior device lighting.
- D. Real-time analytics and reporting.
Answer: D
NEW QUESTION # 35
Whichtwo elementsare required for abrownfield adoption?(Choose two.)
- A. Outbound UDP 1280 access
- B. an imported Configuration Template
- C. DNS resolution
- D. Internet connectivity
Answer: C,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 # 36
What is a benefit of implementing a service block border in a campus fabric?
- A. Simplifying network core device management.
- B. Reducing hardware costs by eliminating physical appliances.
- C. Increasing the network's overall bandwidth capacity.
- D. Improving user experience by prioritizing specific traffic flows.
Answer: A
NEW QUESTION # 37
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