Pass the Juniper JNCIS-MistAI JN0-460 Questions and answers with CertsForce

InJuniper Mist Wired Assurance, SLEs (Service Level Expectations) measure key performance indicators for wired network quality.Throughput SLEmonitorsdata transfer quality, includinglatency, jitter, and packet loss, which directly impact real-time applications such as voice or video.

“The Throughput SLE provides visibility into end-to-end network performance by tracking latency, jitter, and packet loss, helping identify congestion or quality issues across wired connections.”

Option A (Throughput):Correct— this SLE includes jitter measurement.

Option B (Successful Connect):Tracks client connection success rate, not jitter.

Option C (Capacity):Monitors link utilization and load, not jitter.

Option D (Switch Health):Monitors device hardware and software health, not traffic performance.

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.

Juniper Mist defines both3-stageand5-stage IP Closarchitectures for campus and data-center fabrics. The5-stage IP Closdesign adds scalability by introducingspineandsuper-spinelayers above the leaf layer, enabling large campus or aggregation environments.

“The 5-stage IP Clos topology extends the 3-stage design by introducing spine and super-spine tiers. It is ideal for large campus environments requiring additional capacity and hierarchical scaling.”

Option A:Incorrect — Clos is a topology, not a routing protocol.

Option B:Incorrect — VXLAN/EVPN encapsulation operates over Clos but does not define it.

Option C:Incorrect — that describes a traditional three-tier campus (core/distribution/access), not a Clos.

Option D:Correct— the5-stage IP Closis a hierarchical, scalable Clos topology withspine and super-spinelayers used in large campus or data-center networks.

Juniper’s official Campus Fabric IP Clos designfor Mist Wired Assurance defines that the3-stage IP Clostopology eliminates the traditionaldistribution layerentirely. This architecture is intended for smaller campus environments that do not need an intermediate distribution layer between the access and core.

“Juniper’s Wired Assurance supports 3-Stage and 5-Stage IP Clos deployments. The 3-Stage IP Clos is targeted towards deployments that do not require a Distribution Layer and have smaller scale requirements.”

Because the distribution layer is not present, the only hierarchical connection in a 3-stage campus fabric is between thecore and access layers. Traffic is routed directly at the access layer, and each access switch acts as a Layer-3 gateway (IRB) for its VLANs.

“In a campus fabric IP Clos architecture, Mist provisions Layer-3 (L3) integrated routing and bridging (IRB) interfaces on the access layer. All the access switches are configured with the same IP address for each L3 subnet.”

Additionally, the Juniper documentation explains that point-to-point links are configuredbetween layers, and in the case of the 3-stage design (with no distribution), this means between thecore and accessdevices:

“The point-to-point links between each layer utilize /31 addressing to conserve addresses.”

Therefore, the correct statement isC: The core layer is connected to the access layer.

OptionsAandBincorrectly mention a distribution layer that does not exist in this topology.

OptionDis incorrect because core (spine) devices in a Clos fabric are not interconnected with each other.

Syslogis the standard method for exporting Mist AI event and telemetry messages to third-party collectors.

It supports both UDP and TCP delivery for centralized log correlation.

Wired Assurance in Mist Cloud provides automated configuration for Juniper EX Series switches. The automation is built on open APIs and supports programmable workflows, which allow seamless integration with external systems and reduce manual configuration errors.

“Wired Assurance leverages 100% open APIs, enabling integration with third-party automation and orchestration tools. Combined with programmable workflows, this provides a consistent and scalable automation framework for switch deployment and management.”

Option A (100% open APIs): Correct — APIs enable automation and external integration.

Option C (programmable workflows): Correct — workflows automate repetitive tasks and provisioning.

Option B (client SLEs): Incorrect — this is part of user experience monitoring, not automation.

Option D (switch insights): Incorrect — this relates to telemetry and visibility, not automation.

Wired AssurancedefinesSLEs (Service Level Expectations)to provide measurable performance indicators for wired networks. These metrics identify root causes of network degradation by monitoring switch health, connection success, and throughput performance.

“Juniper Mist Wired Assurance delivers AI-driven insights across key wired SLEs including Successful Connects, Throughput, and Switch Health, giving visibility into user experience and switch performance.”

Option A (Capacity):Incorrect — capacity is used in wireless SLEs, not wired.

Option B (Successful Connects):Correct— tracks connection success rate and anomalies.

Option C (Switch Health):Correct— monitors hardware, software, and PoE status.

Option D (Coverage):Incorrect — pertains to wireless SLEs.

Option E (Throughput):Correct— measures data transfer rate, latency, jitter, and loss.

Creating a new site requires asite nameandtime zone.

Other parameters (like templates or location data) are optional but recommended for proper reporting.

In Mist,sitesrepresent the physical or logical grouping of devices within an organization.

You create and manage a site configuration under theLocationhierarchy in the Mist UI.

Each site inherits organization-level settings but can override or customize specific configurations such as VLANs, templates, or switch settings.

In acore-distribution campus fabricmodel, the EVPN-VXLAN overlay is establishedonly between the core and distribution tiers. Theaccess switches are not part of the EVPN fabric; they connect upstream to distribution but do not run VXLAN tunnels.

“In the core-distribution campus fabric, only the core and distribution layers participate in the EVPN-VXLAN topology. The access layer connects to the distribution switches and forwards traffic but does not take part in the EVPN-VXLAN fabric.”

Option A:Correct — EVPN-VXLAN is built between core and distribution tiers.

Option B:Incorrect — both coreand distributionparticipate, not just core.

Option C:Incorrect — access switches are excluded from EVPN-VXLAN participation.

Option D:Correct — the access layer does not participate in EVPN-VXLAN.