Free JNCIA-MistAI Practice Questions

Question 1

After an AP is moved to a replacement switch, it remains online in Mist. Clients authenticate to the Staff WLAN but cannot obtain IP addresses. The WLAN locally bridges client traffic on tagged VLAN 140. Wired Assurance shows native VLAN 10 and allowed tagged VLANs 20 and 30 on the AP-facing port. The DHCP service for VLAN 140 is healthy. What change restores connectivity while preserving the intended management and client VLANs?

Accepted Answer

Add VLAN 140 to the tagged VLANs permitted on the AP-facing port.

Answer

Make VLAN 140 the native VLAN on the AP-facing port.

Answer

Change the Staff WLAN to bridge client traffic on management VLAN 10.

Answer

Enable DHCP snooping on the AP-facing switch port without changing its VLAN list.

Question 2

During a morning interval, a WLAN records 1,500 connection attempts and a Successful Connects result of 92%. The DHCP classifier accounts for 75% of failed attempts; association and authentication account for the rest. Individual clients may have made several attempts. The incident summary must identify the leading contributor without overstating user impact. Which statement belongs in it?

Accepted Answer

DHCP failures affected 6% of connection attempts; investigate the DHCP service and path first.

Answer

DHCP failures affected 75% of wireless clients; investigate the DHCP service and path first.

Answer

DHCP failures affected 8% of connection attempts; investigate the DHCP service and path first.

Answer

DHCP failures affected 6% of unique clients; investigate the DHCP service and path first.

Question 3

Before a new office opens, Marvis Minis runs on a supported Mist AP with the required subscription. DHCP, ARP, DNS, and an application-reachability check pass on the employee VLAN, although no employees are present. What has this validation established?

Accepted Answer

Employee-VLAN services responded; individual client authentication can still fail.

Answer

Only management connectivity was tested; client VLANs remain untested.

Answer

Employee credentials were validated; radio coverage is the remaining untested connection requirement.

Answer

Roaming between the office APs was validated; per-client application performance remains unmeasured.

Question 4

A company replaces its RadSec server certificate. The server still accepts the Mist AP certificates, but the APs reject the new server certificate with an unknown-issuer error during TLS setup. The certificate's server name and validity dates are correct. Which certificate change repairs the missing trust?

Accepted Answer

Import the replacement server's issuing certificate chain under RadSec Certificates.

Answer

Reissue the AP RadSec identity certificate with a new matching private key.

Answer

Copy the Mist Certificate to the RadSec server's AP-client trust configuration.

Answer

Install the server's certificate and private key as the AP RadSec Certificate.

Question 5

Only the APs' connection to the Mist cloud has been interrupted at a branch. The WLAN uses local bridging, existing clients are authenticated, and local gateway, DHCP, and DNS services remain reachable. The portal shows the APs as disconnected. A colleague recommends taking the WLAN offline until cloud contact returns. Which assessment should guide the response?

Accepted Answer

Local forwarding can continue; investigate cloud connectivity without disabling the working WLAN.

Answer

Local application traffic must stop because each client frame traverses the Mist cloud.

Answer

The WLAN must be disabled because its applied policies become invalid without cloud contact.

Answer

Only established traffic flows can continue because the cloud must authorize every new flow.

Question 6

An airport has two indoor-location requirements: staff must find baggage carts carrying compatible BLE tags, and travelers must receive turn-by-turn directions through an integrated mobile app. Location-capable Mist APs are already installed. Select the service pairing that matches these requirements.

Accepted Answer

Asset Visibility for cart tracking; User Engagement for traveler wayfinding.

Answer

User Engagement for cart tracking; Asset Visibility for traveler wayfinding.

Answer

Asset Visibility for both tagged-cart tracking and mobile-app traveler wayfinding.

Answer

User Engagement for both tagged-cart tracking and mobile-app traveler wayfinding.

Question 7

A managed laptop authenticates with EAP-TLS through Access Assurance. The log shows Access-Accept, but a posture policy assigns VLAN 900 because the endpoint-management system reports noncompliance. That VLAN permits the remediation portal and blocks business applications. The user can reach the portal but calls this an authentication outage. What response follows the evidence?

Accepted Answer

Resolve the compliance failure, then reevaluate the device for normal network authorization.

Answer

Revoke the laptop's certificate because restricted access means authentication failed.

Answer

Move the laptop directly to the corporate VLAN while leaving its compliance status unchanged.

Answer

Reenroll the laptop's certificate before reviewing the endpoint-management compliance result.

Question 8

A deployment contractor must claim APs, assign them to sites, and place them on floorplans using the Mist AI mobile app. The contractor must have neither portal access nor permission to remove devices from the organization. This assignment calls for the:

Accepted Answer

Installer role.

Answer

Helpdesk role.

Answer

Network Admin role with All Sites access.

Answer

Org Admin role.

Question 9

An inventory integration makes one REST GET request per site every minute for 90 sites, using a user API token. No other calls use that account. The hourly allowance is 5,000 calls, and inventory data may be up to two minutes old. A developer suggests splitting the requests between two tokens belonging to the same user. Which revision actually meets both constraints?

Accepted Answer

Poll each site every two minutes, producing 2,700 calls per hour for the account.

Answer

Keep one-minute polling and split the sites between the two user tokens, at 2,700 calls each.

Answer

Keep one-minute polling because the 5,000-call allowance applies independently to each of the 90 sites.

Answer

Poll each site every three minutes: 1,800 calls per hour.

Question 10

At 14:12, a handset fails to connect and then succeeds on a retry. The fault cannot be reproduced. Client Insights includes a packet capture for the failed event. The engineer needs to determine whether the DHCP server was silent or returned a negative response. Which evidence should be examined first?

Accepted Answer

The dynamic packet capture associated with the 14:12 event.

Answer

A new manual capture collected while the handset connects successfully.

Answer

The site's DHCP failure rate for that day.

Answer

The administrator audit records covering configuration changes around 14:12.

Free JNCIA-MistAI Practice Questions

Domain 1: Juniper Mist Cloud Fundamentals

Question 1

Domain 2: Juniper Mist Configuration Basics

Question 2

Question 3

Domain 3: Juniper Mist Network Operations and Management

Question 4

Question 5

Domain 4: Juniper Mist Monitoring and Analytics

Question 6

Question 7

Domain 5: Marvis™ Virtual Network Assistant AI

Question 8

Domain 6: Location-based Services

Question 9

Domain 7: Juniper Mist Cloud Operations

Question 10

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