2026年It-Passportsの最新JN0-460 PDFダンプおよびJN0-460試験エンジンの無料共有：https://drive.google.com/open?id=16G1AMPxxihWxB_22jwokMuza-zpvoyFg
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| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Mist AI, Specialist (JNCIS-MistAI-Wired) Exam |
| Exam Number: | JN0-460 |
| Related Certifications: | JNCIS-ENT JNCIA-Junos Juniper Mist AI Certifications |
| Exam Format: | Multiple Response, Multiple Choice |
| Available Languages: | English |
| Certificate Validity Period: | 3 years |
| Exam Duration: | 90 minutes |
| Recommended Training: | Juniper Learning Portal Juniper Mist AI Wired Training |
| Exam Registration: | Juniper Certification Registration Pearson VUE Juniper Exams |
| Sample Questions: | Juniper JN0-460 Sample Questions |
| Exam Way: | Online proctored or test center delivery (Pearson VUE) |
| Pre Condition: | Recommended: JNCIA-Junos or equivalent networking knowledge. Familiarity with enterprise switching and cloud-managed networks is strongly recommended. |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/ |
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質問 # 15
What aretwo limitationsof usingLLDPfor identifying wired clients?(Choose two.)
正解：C、D
解説：
Link Layer Discovery Protocol (LLDP)is a Layer 2 discovery protocol that allows network devices to advertise identity and capabilities to directly connected neighbors. While LLDP is useful for basic topology discovery, it has two key limitations inWired Assurance client identification:
"LLDP operates at Layer 2 between directly connected devices and must be explicitly enabled on all participating network elements to provide neighbor information. It cannot discover devices beyond the first physical hop." Option A:Correct- LLDP must beconfigured and enabledon each network device to function.
Option B:Incorrect - LLDP itself is scalable but limited to direct adjacency.
Option C:Correct- LLDP only worksbetween directly connected devices.
Option D:Incorrect - not all clients support LLDP; however, the question asks forlimitations of using LLDP, not lack of support.
References:
Juniper Mist AI for Wired - LLDP Client Discovery Overview
Junos OS Documentation - LLDP Protocol Operation
Juniper Mist Wired Assurance - Device Identification and Topology Guide
質問 # 16
Which campus fabric architecture extends from the core tier to the access tier?
正解：A
解説：
According to Juniper Mist documentation regarding campus fabric design, the campus fabric IP Clos (also known as a 5-stage Clos) is the architecture that extends the EVPN-VXLAN protocol stack from the core tier down through the distribution tier and finally to the access tier. In this model, every switch in the hierarchy- from the high-capacity core switches to the wiring closet access switches-participates in the EVPN control plane and VXLAN data plane.
By extending EVPN-VXLAN to the access tier, the IP Clos architecture provides a standards-based, scalable framework that allows for seamless Layer 2 connectivity over a Layer 3 underlay across the entire campus333333333. This enables advanced features like Microsegmentation using Group-Based Policies (GBP) and Macrosegmentation via Virtual Routing and Forwarding (VRF) instances directly at the edge of the network.
In contrast, other architectures like "core-distribution" (either CRB or ERB) typically limit the EVPN- VXLAN fabric to the core and distribution layers, leaving the access tier to connect via traditional methods like LAG, Virtual Chassis, or standard Layer 2 trunks5555. The IP Clos architecture is specifically designed for large-scale deployments where high density, vendor interoperability, and end-to-end policy enforcement are critical6. By utilizing a 5-stage IP Clos, organizations can eliminate the complexities of Spanning Tree Protocol (STP) while maintaining a flexible, "any-to-any" communication path throughout the physical infrastructure.
質問 # 17
GPB and Micro segmentation are crucial for __________ within a Campus Fabric network.
正解：D
質問 # 18
What are thetwo ways to forward BUM trafficwhen usingEVPN?(Choose two.)
正解：A、B
解説：
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
質問 # 19
Which service level expectation (SLE) metric measures congestion on the uplink interface of a switch?
正解：C
解説：
According to Juniper Mist documentation, the Throughput Service Level Expectation (SLE) is the primary metric used to represent the ability of wired users to pass traffic across the network without impedance. This SLE provides a comprehensive oversight of network performance by identifying issues that degrade the user experience, such as storm control events, interface anomalies, and specifically uplink congestion.
Within the Throughput SLE, the Congestion classifier (also referred to as Congestion Uplink) is specifically designed to monitor for buffer saturation and packet drops (TxDrops). When traffic arriving at an interface exceeds its processing or forwarding capacity, packets are queued in a buffer; if this buffer becomes full, the switch begins dropping packets. Juniper Mist utilizes a specific formula considering the ratios of TxDrops to TxPackets, Transmitted bps to Link Speed, and Received Speed to Link Speed to determine if a "Bad User Minute" has occurred due to congestion.
A critical feature of Wired Assurance is the automatic identification of uplink interfaces. Mist identifies these high-capacity ports by analyzing switch telemetry for characteristics such as having a switch or router as an LLDP neighbor, being designated as a Spanning Tree Protocol (STP) root port, or exhibiting significantly higher packet counts compared to access ports. When congestion is detected on an interface identified as an uplink, the system recognizes that this bottleneck impacts every user on that switch. By correlating these drops with the Throughput SLE, network administrators can proactively identify when a site requires more bandwidth or a different fabric architecture to handle current traffic demands, rather than simply monitoring if the link is physically "up" or "down".
質問 # 20
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JN0-460過去問題: https://www.it-passports.com/JN0-460.html
2026年It-Passportsの最新JN0-460 PDFダンプおよびJN0-460試験エンジンの無料共有：https://drive.google.com/open?id=16G1AMPxxihWxB_22jwokMuza-zpvoyFg