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Mist AI Wired, Specialist (JNCIS-MistAI-Wired) Questions 11–15 (page: 4)

Updated On: 10-Feb-2026

In Juniper Mist cloud services, service level expectation (SLE) telemetry is collected from every device and stored for up to how long?

  1. 1 month
  2. 2 months
  3. 7 days
  4. 24 hours

Answer(s): A

Explanation:

Juniper Mist AI collects telemetry 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 to one month in 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 for 30 days (1 month).


Reference:

Juniper Mist AI for Wired ­ Service Level Expectations Overview Juniper Mist AI for Wired ­ Telemetry and Data Retention Guide ===========



Which campus fabric architecture supports Layer 3 gateways at the distribution layer?

  1. campus fabric core/distribution ­ centrally-routed bridging (CRB)
  2. campus fabric IP Clos
  3. campus fabric core/distribution ­ edge-routed bridging (ERB)
  4. EVPN multihoming

Answer(s): C

Explanation:

In Juniper's campus fabric architectures, the location of the Layer 3 gateway (IRB) differentiates between CRB and ERB models:
Centrally-Routed Bridging (CRB): L3 gateways are placed at the core layer. Edge-Routed Bridging (ERB): L3 gateways are placed at the distribution layer, closer to the edge. "In the ERB model, Layer 2 gateways are deployed at the access layer, and Layer 3 gateways are deployed at the distribution layer."
Option A (CRB): Incorrect -- L3 is at the core, not distribution. Option B (IP Clos): Incorrect -- in 3-stage Clos, L3 is pushed to the access layer. Option D (EVPN multihoming): Incorrect -- this is about redundancy, not gateway placement. Option C (ERB): Correct -- L3 gateways sit at the distribution layer in the ERB architecture.


Reference:

Juniper Mist AI for Wired ­ Campus Fabric Architecture Models

Juniper Validated Design ­ Core/Distribution CRB vs ERB Gateways Junos OS EVPN-VXLAN Campus Fabric Deployment Guide



You have deployed your switches and need to provide a unique hostname on each switch.
Which Mist dashboard option allows you to accomplish this task?

  1. Organization switch template
  2. Site switch configuration
  3. Individual switch configuration
  4. Device profiles

Answer(s): C

Explanation:

In Juniper Mist Cloud, there are multiple configuration scopes:
Organization-level templates apply globally.
Site-level configuration applies across all devices in a site. Individual switch configuration is used to define unique, device-specific attributes such as hostname, management IP, or local overrides.
"Templates and site-level configuration ensure consistency across devices, while individual 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 configuration is the correct place to assign hostnames uniquely per device.


Reference:

Juniper Mist AI for Wired ­ Switch Configuration Hierarchy Juniper Mist Documentation ­ Device-Level Configuration in Wired Assurance ===========



Which two statements are correct about the campus fabric core-distribution architecture? (Choose two.)

  1. Only the core and distribution tiers are part of the EVPN-VXLAN topology.
  2. Only the core tier participates in the EVPN-VXLAN topology.
  3. The access tier is included in the EVPN-VXLAN topology.
  4. The access tier does not participate in the EVPN-VXLAN topology.

Answer(s): A,D

Explanation:

In a core-distribution campus fabric model, the EVPN-VXLAN overlay is established only between the core and distribution tiers. The access 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 core and distribution participate, 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.


Reference:

Juniper Mist AI for Wired ­ Campus Fabric Core-Distribution Architecture Juniper Validated Design ­ EVPN-VXLAN Campus Deployment Models Junos OS EVPN Campus Fabric Design Guide



What information does Mist use to determine if the port is classified as an uplink? (Choose two.)

  1. if TX and RX are higher than the rest of the ports
  2. if the port has an MTU greater than 1500 configured
  3. if the port is an STP root port
  4. if the port has a description configured

Answer(s): A,C

Explanation:

Juniper Mist automatically classifies ports to simplify visibility and automation within Wired Assurance. The Mist cloud analyzes port telemetry and link behavior to 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 uses STP 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.


Reference:

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



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