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Juniper JN0-451 (Mist AI - Specialist (JNCIS-MistAI)) certification exam is designed for network engineers, administrators, and IT professionals who want to validate their skills and knowledge of Mist AI technology. JN0-451 exam measures the candidate's understanding of wireless networking, AI-driven operations, and cloud management using Mist AI. By earning this certification, candidates can demonstrate their expertise in deploying and managing Mist AI technology in a modern network environment.
NEW QUESTION # 40
When does a Mist AP actually begin transmitting BLE?
- A. When BLE is enabled at the Organization level.
- B. When it is claimed and placed on a site.
- C. When it is placed on a floor plan.
- D. When BLE is enabled for the AP.
Answer: C
Explanation:
According to the Location - how it works - Mist document1, a Mist AP actually begins transmitting BLE when it is placed on a floor plan. This is because the Mist cloud uses the floor plan information to calculate the optimal BLE transmission pattern for each AP.
NEW QUESTION # 41
Which Wireless Assurance SLE has classifiers of Association, Authorization, DHCP, and Internet Services?
- A. Time to Connect
- B. Coverage
- C. Roaming
- D. Capacity
Answer: A
Explanation:
Explanation
The Wireless Assurance SLE that has classifiers of Association, Authorization, DHCP, and Internet Services is Time to Connect. So the correct answer is C. Time to Connect.
NEW QUESTION # 42
What is meant when a Marvis Action is shown as "AI Validated"?
- A. The issue which triggered an alert has been set to Resolved status.
- B. Marvis has observed a recurring issue.
- C. Marvis has observed a new issue.
- D. Marvis has observed an issue that is no longer present.
Answer: D
Explanation:
Reference:
When a Marvis Action is shown as "AI Validated", it means that Marvis has observed an issue that is no longer present.
NEW QUESTION # 43
What are three available rate limiting options in the Mist UI? (Choose three.)
- A. Per-Client
- B. Per-Site
- C. Application
- D. wLan
- E. Network
Answer: A,B,E
NEW QUESTION # 44
You have deployed location services at a site and have installed an application which includes the Mist SDK on Bluetooth-only mobile client devices. The devices with the SDK-enabled app have Bluetooth enabled, but the devices do not appear in the Mist GUI under Clients/App Clients.
What is causing this problem?
- A. The AP BLE radios do not hear the SDK-enabled client's BLE beacons.
- B. The clients are connected to the wrong WLAN.
- C. There is BLE and Wi-Fi co-channel interference.
- D. The client devices are not connected to Wi-Fi or to a cellular data plan.
Answer: A
Explanation:
If Bluetooth-only mobile client devices with an SDK-enabled app do not appear in the Mist GUI under Clients/App Clients even though they have Bluetooth enabled, it could be because the AP BLE radios do not hear the SDK-enabled client's BLE beacons.
According to the Mist documentation1, Mist SDK is a software development kit that enables indoor location and proximity services using Mist's virtual Bluetooth LE (vBLE) technology. The SDK allows mobile applications to communicate with Mist APs using BLE beacons that are transmitted by the client devices.
The devices with the SDK-enabled app have Bluetooth enabled, but they do not appear in the Mist GUI under Clients/App Clients because the AP BLE radios do not hear the SDK-enabled client's BLE beacons. This could be due to various factors such as interference, distance, obstacles, or configuration issues that affect the BLE signal strength and quality.
NEW QUESTION # 45
A user with a PSK calls you and says, "The Wi-Fi worked for a week and now it does not work." There have not been any recent configuration changes to the network. You suspect that a time-based setting has reset the key.
In this scenario, where would you begin troubleshooting?
- A. Organization-level Pre-Shared Keys
- B. WLAN-level Pre-Shared Keys
- C. RADIUS Pre-Shared Keys
- D. Site-level Pre-Shared Keys
Answer: B
NEW QUESTION # 46
Click the Exhibit button.
Referring to the exhibit, what is the meaning of the AI VALIDATED status update?
- A. The issue was opened and closed manually.
- B. The issue was opened and is unresolved.
- C. The issue was opened and Marvis confirms it has been closed.
- D. The issue was opened and Marvis has closed it.
Answer: C
Explanation:
Explanation
The AI VALIDATED status update means that the issue was opened and Marvis confirms it has been closed.
NEW QUESTION # 47
Which two authentication methods would be used with a guest portal? (Choose two.)
- A. RSA
- B. external portal
- C. Kerberos
- D. social login
Answer: B,D
Explanation:
Two authentication methods that would be used with a guest portal are social login and external portal. So the correct answers are A. social login and B. external portal.
According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide2, two authentication methods that can be used with a guest portal are:
Social login, which allows guests to log in using their social media accounts such as Facebook, Twitter, or Google.
External portal, which allows guests to log in using an external web server that hosts a custom portal page.
NEW QUESTION # 48
You want to identify APs that are not associated with your network. However, the APs broadcast your corporate login page and WLAN name.
What does Mist use to identify APs in this scenario?
- A. a honeypot AP
- B. an approved AP
- C. a neighbor AP
- D. a rogue AP
Answer: D
Explanation:
Explanation
In a scenario where you want to identify APs that are not associated with your network but broadcast your corporate login page and WLAN name, Mist would use a rogue AP to identify these APs.
NEW QUESTION # 49
Regarding the seven layer OSI networking model, which two layers are different between Ethernet and Wi-Fi? (Choose two.)
- A. network layer
- B. media access control (MAC) sub-layer
- C. logical link control (LLC) sub-layer
- D. physical layer
Answer: B,D
Explanation:
According to the Lecture 3 - Radio Frequency and Antenna Fundamentals - Part 2 document3, two layers that are different between Ethernet and Wi-Fi in the OSI networking model are:
Media access control (MAC) sub-layer, which is part of the data link layer and defines how devices access and share the wireless medium.
Physical layer, which defines how data is encoded and transmitted over the wireless medium.
NEW QUESTION # 50
Referring to the exhibit, what are two reasons why a Mist AP would have multiple IP addresses? (Choose two.)
- A. A guest portal is configured on a tagged VLAN.
- B. The Local Status Page is enabled in the site settings.
- C. One IP address is used for redundancy.
- D. One IP address is used for control traffic and one address is used for management traffic.
Answer: A,B
Explanation:
Reference:
According to the Mist AP43 Access Point Data Sheet document1 and the Guest Access - Mist document2, two reasons why a Mist AP would have multiple IP addresses are:
The Local Status Page is enabled in the site settings, which allows the AP to have an additional IP address on VLAN 4094 for local management purposes.
A guest portal is configured on a tagged VLAN, which allows the AP to have an additional IP address on that VLAN for guest access purposes.
NEW QUESTION # 51
What is the AP's role in the IEEE 802.1X authentication process?
- A. It acts as an authenticator.
- B. It acts as a supplicant.
- C. It acts as an authentication server.
- D. It acts as a RADIUS proxy server.
Answer: C
NEW QUESTION # 52
Referring to the exhibit, you asked Marvis to troubleshoot a client. In this scenario, what did Marvis determine?
- A. two DHCP failures today
- B. DHCP errors over the past seven days
- C. two authentication failures today
- D. two authentication failures over this week
Answer: C
Explanation:
Reference:
According to the exhibit, Marvis determined that there were two authentication failures today for the client device. This can be seen from the red dots on the timeline chart that indicate failed events and from the event details that show authentication failure as the reason.
NEW QUESTION # 53
What are basic data rates?
- A. disabled data rates
- B. fastest data rates
- C. optional data rates
- D. required data rates
Answer: D
NEW QUESTION # 54
You are using location-based services (LBS) at a new warehouse and placed the APs on the floor plan with the correct scale. The APs are mounted on trusses, 14 feet (4.3 meters) from the floor.
Which two actions ensure correct location accuracy in this scenario? (Choose two.)
- A. Disable the 2.4 GHz Wi-Fi radios to reduce interference.
- B. Determine the orientation of each AP.
- C. Install Virtual Beacons in each aisle.
- D. Configure the height of each AP.
Answer: C,D
Explanation:
When using location-based services (LBS) at a new warehouse and placing APs on the floor plan with correct scale while ensuring correct location accuracy in this scenario where APs are mounted on trusses 14 feet (4.3 meters) from floor, two actions that should be taken are installing Virtual Beacons in each aisle and configuring height of each AP. So the correct answers are A. Install Virtual Beacons in each aisle and B. Configure height of each AP.
NEW QUESTION # 55
You have received a Marvis Actions Missing VLAN notification.
In this scenario, where is the problem?
- A. An access point is missing the VLAN.
- B. The gateway is missing the VLAN.
- C. A switch is missing the VLAN.
- D. A client is missing the VLAN.
Answer: A
Explanation:
According to the JNCIS-MistAI Certification page3, a Marvis Actions Missing VLAN notification indicates that an access point is missing a VLAN that is configured on other access points in the same site.
NEW QUESTION # 56
You are installing and booting up your first Juniper Mist AP at your site.
By default, which two statements are correct in this scenario? (Choose two.)
- A. The AP will send DHCP requests using the native VLAN.
- B. The AP will attempt to connect to the Mist cloud using port 443.
- C. The AP will send DHCP requests with a VLAN ID of 10.
- D. The AP will attempt to connect to the Mist cloud using port 8080.
Answer: A,B
Explanation:
According to the Initial AP Connection and VLANs & Static IP addresses - Mist document1, when a Juniper Mist AP boots up for the first time, it will expect to see a trunked port or the native VLAN=1 and will send a DHCP request on that VLAN. The AP will attempt to connect to the Mist cloud using port 443, which is the default HTTPS port.
NEW QUESTION # 57
Which two events are displayed under the Client Events area found on the Insights page? (Choose two.)
- A. Reflection (Loop Detection)
- B. Restart by User
- C. DHCP Denied
- D. Reassociation
Answer: C,D
Explanation:
Explanation
Two events that are displayed under Client Events area found on Insights page are Reassociation and DHCP Denied. So the correct answers are A. Reassociation and D. DHCP Denied.
NEW QUESTION # 58
All the access points (APs) on the site will obtain an IP address for the Management VLAN. You notice an additional IP address for each configured VLAN on the AP.
Which statement is correct in this scenario?
- A. The AP is configured to support wireless mesh.
- B. The AP MAC has a DHCP reservation.
- C. This behavior is enabled by default under the Site configuration.
- D. The Local Status Page has been enabled in the AP setting under the Site configuration.
Answer: D
Explanation:
Explanation
According to the Mist documentation1, a Mist AP will pull a management IP address from the Native VLAN by default. However, if the Local Status Page is configured for the Site, all the site APs will pull their own IP address from the Management VLAN, but also addresses for each of the VLANs configured on the AP. This is because each AP creates a Switch Virtual Interface (SVI) for each VLAN on its eth0 interface.
The Local Status Page is a feature that allows you to access information about an AP's status and configuration through a web browser by connecting to its IP address2. This feature can be enabled or disabled at the site level under Site Settings > Access Points > Advanced Settings.
NEW QUESTION # 59
All the access points (APs) on the site will obtain an IP address for the Management VLAN. You notice an additional IP address for each configured VLAN on the AP.
Which statement is correct in this scenario?
- A. The AP is configured to support wireless mesh.
- B. The Local Status Page has been enabled in the AP setting under the Site configuration.
- C. The AP MAC has a DHCP reservation.
- D. This behavior is enabled by default under the Site configuration.
Answer: D
NEW QUESTION # 60
You are troubleshooting a client that has had intermittent connectivity problems. Using Marvis to troubleshoot, you see that AP uptime is negatively affecting the client. When inspecting Marvis' troubleshooting response, which category should you select to see when the AP went offline?
- A. Correlation
- B. Classifiers
- C. Location
- D. AP Metrics
Answer: D
NEW QUESTION # 61
Regarding roaming, which device determines when it is time to connect to another AP?
- A. the gateway router
- B. the primary AP
- C. the client device
- D. the current AP
Answer: C
Explanation:
According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide1, roaming is the process of moving a wireless client device from one AP to another while maintaining network connectivity. The client device determines when it is time to connect to another AP based on its own roaming algorithm and criteria.
NEW QUESTION # 62
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Juniper JN0-451 Exam is an excellent way for network professionals to validate their skills in deploying and managing Juniper's Mist AI platform. Mist AI - Specialist (JNCIS-MistAI) certification is recognized globally and demonstrates that candidates have the knowledge and skills required to succeed in a variety of network engineering roles. By passing JN0-451 exam, candidates can differentiate themselves in the job market and open up new career opportunities.
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