TheMist UI(User Interface) is Juniper’s cloud-based management platform used tomanage both wired and wireless devices, including EX, QFX, and SRX platforms.

It provides centralized visibility, configuration, analytics, and AI-driven insights for the entire enterprise network infrastructure.

WithinWired Assurance, the Mist UI enables device claiming, switch templates, configuration management, and SLE monitoring.

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.

During campus 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.

Juniper Mist supports ahierarchical configuration model:

Organization level:global configuration templates applied across sites.

Site level:shared configuration for all devices in a site.

Individual device level:unique overrides.

To applycommon system-level settings(e.g., NTP, SNMP, DNS, syslog) across multiple sites, the correct method is to use anorganization-level template.

“Organization-level templates provide a consistent configuration framework that can be applied across multiple sites, ensuring uniform system settings for all switches.”

Option A:Incorrect — manual CLI configuration defeats automation.

Option B:Incorrect — applies only to one site, not multiple.

Option C:Correct— organization-level templates provide centralized configuration for all sites.

Option D:Incorrect — individual configuration is for unique settings only.

Comprehensive and Detailed Explanation From Exact Extract:

InEVPN-VXLANarchitectures, theVXLAN Tunnel Endpoint (VTEP)is the logical interface responsible for encapsulating and de-encapsulating Layer 2 Ethernet frames into VXLAN packets.

Each participating switch — typically the access or distribution node — hosts aVTEPthat maps local VLANs to VXLAN Network Identifiers (VNIs).

When a packet leaves a local VLAN, the VTEP encapsulates it in a VXLAN header and routes it through the underlay IP fabric.

When received at the destination VTEP, the frame is de-encapsulated and delivered to the appropriate local VLAN.

“VTEPs in an EVPN-VXLAN campus fabric perform MAC-to-VNI mapping and encapsulate/decapsulate traffic between virtualized network segments, allowing seamless Layer 2 and Layer 3 connectivity across an IP underlay.”

Juniper Mist Wired AssuranceprovidesAI-driven operational visibilityfor EX and QFX switches. It defines and tracksService Level Expectations (SLEs)across multiple performance areas including connectivity, throughput, and switch health.

“Wired Assurance uses AI and telemetry to deliver operational visibility, track service level expectations (SLEs), and monitor throughput, successful connects, and switch health through pre- and post-connection metrics.”

Option A:Correct— accurately describes the full scope of Wired Assurance.

Option B:Incorrect — Wired Assurance provides SLEs specifically for EX and QFX switches.

Option C:Incorrect — both pre- and post-connection SLEs are monitored.

Option D:Incorrect — Wired Assurance monitors both connectivity and device health.

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.

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.

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.

Juniper Mist AI collectstelemetry for Service Level Expectations (SLEs)across wired and wireless devices. This telemetry includes metrics such as time-to-connect, throughput, coverage, and switch performance.

“Service Level Expectation (SLE) data is collected from every device and stored for up toone monthin the Mist Cloud. This allows administrators to analyze historical performance trends and troubleshoot issues based on real-time and historical data.”

Option B (2 months):Incorrect — data is not retained this long.

Option C (7 days):Incorrect — telemetry retention is longer.

Option D (24 hours):Incorrect — too short for Mist SLE analytics.

Option A (1 month):Correct — Mist Cloud retains SLE telemetry for30 days (1 month).