Easily To Pass New Juniper JN0-251 Dumps with 79 Questions
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Juniper JN0-251 exam is an essential certification for network engineers and administrators who work with Juniper Mist AI wireless technologies. Mist AI, Associate (JNCIA-MistAI) certification validates the skills and knowledge required to design, deploy, and troubleshoot wireless networks using Juniper Mist AI technologies. It is an excellent way for network engineers and administrators to demonstrate their expertise in wireless networking.
The JN0-251 exam is intended for network engineers, administrators, and support personnel who work with Mist AI. JN0-251 exam covers a range of topics related to wireless networking, including WLAN fundamentals, access point deployment, wireless security, and troubleshooting. Candidates who pass the exam will have a solid understanding of Mist AI and the ability to implement and troubleshoot wireless LANs using the platform.
NEW QUESTION # 38
You just received the newest Mist AP and want to enable a feature that is only available at this time on Release Candidate 1.
In this scenario, using the Mist GUI, where would you determine which version of Release Candidate 1 is available for your AP?
- A. Support Tickets and Documentation -> Feature Updates
- B. Support Tickets and Documentation -> Firmware Updates
- C. Support Tickets and Documentation -> Ports & Endpoints
- D. Support Tickets and Documentation -> Mist Edge Updates
Answer: B
Explanation:
Reference:
If you want to enable a feature that is only available on Release Candidate 1, you need to upgrade your AP to the latest firmware version that supports that feature. To do that, you can use the Firmware Upgrade feature in the Mist GUI, which allows you to automatically or manually upgrade multiple APs on your site1. To find out which version of Release Candidate 1 is available for your AP, you can go to Support Tickets and Documentation -> Firmware Updates in the Mist GUI. There, you will see a list of the latest firmware versions for different AP models, along with the release notes and the features they support2. You can also use the ? mark in the upper right of the UI to see the latest firmware and previous production releases1. You can then select the desired firmware version from the dropdown menu and start the upgrade process1.
NEW QUESTION # 39
A user called a help desk to report a Wi-Fi issue.
In this scenario, what information must be provided for Marvis to troubleshoot the issue? (Choose two.)
- A. user home address
- B. the time of the incident
- C. the MAC address of the client device
- D. the access point to which the client was connected
Answer: B,C
Explanation:
A user called a help desk to report a Wi-Fi issue. In this scenario, the information that must be provided for Marvis to troubleshoot the issue are the MAC address of the client device and the time of the incident. These are two of the essential parameters that Marvis needs to identify and analyze the wireless client and its connection history.
The MAC address of the client device is a unique identifier that allows Marvis to locate and track the client on the wireless network. The MAC address can be found on the device settings, label, or sticker, depending on the device type. The MAC address can also be obtained from the Mist portal or the Mist AI App by searching for the client name or IP address.
The time of the incident is the approximate date and time when the user experienced the Wi-Fi issue. The time of the incident can help Marvis narrow down the scope of the troubleshooting and focus on the relevant data and events. The time of the incident can be specified in various formats, such as "today", "yesterday", "last week", "10 minutes ago", "5 pm", etc.
To troubleshoot a Wi-Fi issue using Marvis, you can use phrases such as "troubleshoot client <MAC address> on <time>" or "how was client <MAC address> on <time>" in the Marvis Conversational Assistant window. Marvis will show you the details of the client's connection status, performance, issues, and recommendations.
NEW QUESTION # 40
You are asked to bring Mist APs online for your organization.
In this situation, which port must be allowed on your company's firewall for AP access to the Mist cloud?
- A. TCP/443
- B. UDP/1812
- C. UDP/22
- D. TCP/80
Answer: A
Explanation:
Reference:
According to the web search results, TCP/443 is the port that must be allowed on your company's firewall for AP access to the Mist cloud. TCP/443 is the port that is used for HTTPS, which is a secure version of HTTP that encrypts the data sent between the client and the server1. Mist APs use HTTPS to communicate with the Mist cloud and receive their configuration, firmware, and policies2. TCP/443 is also the port that is used for ep-terminator, which is a service that provides encrypted tunneling between Mist APs and the Mist cloud3. Therefore, TCP/443 is the port that must be allowed on your company's firewall for AP access to the Mist cloud.
NEW QUESTION # 41
Which statement is correct about Marvis Actions?
- A. It summarizes user trouble tickets and detected AP problems.
- B. It summarizes all of the misconfigured WLANs at a site.
- C. It automatically detects and reports network problems.
- D. It automatically issues an RMA for an AP.
Answer: C
Explanation:
Reference:
According to the web search results, Marvis Actions is a feature that automatically detects and reports network problems that affect the user experience in an organization1. Marvis Actions uses the Mist AI to identify the root cause of issues and provide recommended solutions or automated fixes1. Marvis Actions can provide insight into issues across the wired, WAN, and wireless networks, at the managed service provider (MSP) level, organization level, and site level1. Marvis Actions can help network administrators monitor, troubleshoot, and optimize their network by providing real-time and historical data and analytics1.
NEW QUESTION # 42
What does Mist with Wi-Fi Assurance do to detect a bad cable connected to an AP?
- A. It applies machine learning to telemetry data.
- B. It performs cable tests.
- C. It sends probe traffic through the cable connections.
- D. It monitors SNMP trap information.
Answer: B
Explanation:
According to the Switch Testing Tools page, one of the features that Mist with Wi-Fi Assurance provides is the ability to run a cable test on the port provided1. This can help monitor the connection health of the cable on your specified port1. The cable test can show the length of the cable, the status of each pair, and any faults detected1. This feature can be accessed from the Utilities dropdown menu on the Switches page in the Mist dashboard1. The other options are not correct because they are not related to detecting a bad cable connected to an AP. SNMP trap information is a way of sending alerts from network devices to a management system. Probe traffic is a way of measuring network performance by sending packets between endpoints. Machine learning is a way of applying artificial intelligence to analyze data and learn from it.
NEW QUESTION # 43
Which protocol is used by Mist access points to discover third-party switches?
- A. SNMP
- B. LLDP
- C. CDP
- D. ICMP
Answer: B
Explanation:
Reference:
The protocol that is used by Mist access points to discover third-party switches is LLDP. LLDP stands for Link Layer Discovery Protocol and is a vendor-neutral protocol that allows devices to advertise and discover information about their identity, capabilities, and neighbors on a local area network. LLDP operates on the data link layer (Layer 2) of the OSI model and uses multicast frames to exchange information.
Mist access points use LLDP to discover the switch name, model, firmware version, port number, VLAN ID, and PoE status of the connected third-party switches. This information is then sent to the Mist cloud, where it is processed and displayed in the Mist portal. You can view the switch details and topology in the Switches tab of the Mist portal1. You can also use the Marvis virtual network assistant to query the switch information using natural language commands.
NEW QUESTION # 44
You want to obtain detailed information on a wireless client.
In this scenario, which area would you use to accomplish this task?
- A. Security
- B. Templates
- C. Insights
- D. SLEs
Answer: C
Explanation:
The area that you would use to obtain detailed information on a wireless client is the Insights area. The Insights area provides a comprehensive view of the wireless network performance and user experience, including the client dashboard, the live view, the service-level expectations (SLEs), and the Marvis virtual network assistant.
The client dashboard allows you to view and search for individual wireless clients and see their connection details, such as device type, MAC address, IP address, SSID, AP name, signal strength, throughput, data usage, location, and more. You can also perform actions on the clients, such as block, unblock, or capture packets.
The live view allows you to monitor the real-time status and activity of the wireless network and clients. You can see the number of connected clients, the traffic volume, the SLE scores, the top APs and SSIDs, and more. You can also filter and drill down into specific clients, APs, SSIDs, or sites.
The SLEs allow you to define and measure the quality of service and user experience for the wireless network. You can set thresholds and goals for key metrics, such as throughput, coverage, capacity, roaming, uptime, and WAN. You can also receive alerts and recommendations when the SLEs are violated.
The Marvis virtual network assistant allows you to interact with the wireless network using natural language commands. You can ask questions, troubleshoot issues, perform actions, and get insights from Marvis. For example, you can ask Marvis to show you the details of a wireless client or to explain why a client had a poor connection.
NEW QUESTION # 45
Which two Mist-supported APIs are considered event-driven? (Choose two.)
- A. WebSocket
- B. Webhook
- C. RESTful
- D. gRPC
Answer: A,B
NEW QUESTION # 46
Which two Mist-supported APIs are considered event-driven? (Choose two.)
- A. WebSocket
- B. Webhook
- C. RESTful
- D. gRPC
Answer: A,B
Explanation:
According to the web search results, WebSocket and Webhook are two Mist-supported APIs that are considered event-driven. Event-driven APIs are APIs that allow the server to push information to the client asynchronously, instead of requiring the client to poll the server for updates. Event-driven APIs can provide real-time data, decoupled systems, and improved scalability and performance.
WebSocket is a protocol that enables bidirectional communication between a client and a server over a single TCP connection1. WebSocket allows the server to send messages to the client without waiting for a request, and vice versa1. WebSocket can be used for event-driven APIs that require continuous and interactive data exchange, such as chat applications, online games, or live streaming1.
Webhook is a way of sending data from the server to a third-party application or service when a certain event occurs2. Webhook allows the server to notify the client about an event, such as a new order, a payment confirmation, or a user registration2. Webhook can be used for event-driven APIs that require one-way notifications or integrations with other platforms, such as Slack, Splunk, or ServiceNow2.
NEW QUESTION # 47
In the Mist Access Point portfolio, which dedicated device would be used in location-based services (LBS)?
- A. AP34
- B. BT11
- C. AP32
- D. AP12
Answer: B
Explanation:
Reference:
According to the Mist Access Points page, the BT11 is a dedicated device for location-based services (LBS) in the Mist Access Point portfolio1. The BT11 is a battery-powered Bluetooth Low Energy (BLE) beacon that can be used to enhance the accuracy and reliability of indoor location services1. The BT11 can be placed in areas where Mist APs are not available or where additional BLE coverage is needed1. The BT11 can be managed by the Mist cloud and integrated with the Mist AI platform for analytics and automation1.
NEW QUESTION # 48
Besides providing AP configuration status, for which other purpose is the LED used in the location design phase?
- A. channels in use
- B. height orientation
- C. frequency selection
- D. antenna orientation
Answer: D
Explanation:
According to the web search results, the LED on a Mist AP can be used for antenna orientation in the location design phase, besides providing AP configuration status. The location design phase is the process of planning and deploying a wireless network that can provide accurate and reliable location services, such as indoor positioning, wayfinding, or asset tracking1. Antenna orientation is an important factor that affects the performance and accuracy of location services, as it determines the coverage and signal strength of the APs2.
The LED on a Mist AP can be used to indicate the antenna orientation by showing different colors and patterns depending on the angle of the AP3. For example, a blue LED means that the AP is facing down, a green LED means that the AP is tilted at 45 degrees, and a red LED means that the AP is facing up3. By using the LED as a guide, the network installer can easily adjust the angle of the AP to achieve the optimal coverage and location accuracy3. The LED can also be controlled remotely by using the Mist AI app or the Mist portal3.
Therefore, based on the web search results, the LED on a Mist AP can be used for antenna orientation in the location design phase, besides providing AP configuration status. This feature can help improve the quality and efficiency of location services in various scenarios, such as retail, hospitality, or healthcare1.
NEW QUESTION # 49
What does Mist with Wi-Fi Assurance do to detect a bad cable connected to an AP?
- A. It applies machine learning to telemetry data.
- B. It performs cable tests.
- C. It sends probe traffic through the cable connections.
- D. It monitors SNMP trap information.
Answer: B
Explanation:
Reference:
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NEW QUESTION # 50
Click the Exhibit button.
You notice a green LED emitted from your AP43.
Referring to the exhibit, what does this signal indicate?
- A. The AP is not configured correctly but one user is connected to it.
- B. The AP is configured correctly with no users connected to it.
- C. The AP is configured correctly and at least one user is connected to it.
- D. The AP is not configured correctly with no users connected to it.
Answer: B
Explanation:
According to the exhibit, which shows the AP status table for Mist APs, a green LED emitted from an AP indicates that the AP is configured correctly with no users connected to it. This means that the AP has successfully connected to the Mist cloud and received its configuration, but there are no wireless clients associated with it. A green LED is different from a blue LED, which indicates that the AP is configured correctly and at least one user is connected to it. A red LED indicates that the AP is not configured correctly and has an error. A yellow LED indicates that the AP is in recovery mode and needs to be reset. Therefore, based on the exhibit, a green LED emitted from your AP43 means that the AP is configured correctly with no users connected to it.
NEW QUESTION # 51
What is a Mist Coverage SLE based upon?
- A. a summary of user minutes
- B. an average of client data
- C. a summary of switch data
- D. an average across APs
Answer: C
NEW QUESTION # 52
Which two APIs are supported by Mist? (Choose two.)
- A. Webhook
- B. SOAP
- C. gRPC
- D. REST
Answer: A,D
NEW QUESTION # 53
What are three alert levels used in the Mist UI? (Choose three.)
- A. notice
- B. informational
- C. critical
- D. error
- E. warning
Answer: A,C,E
NEW QUESTION # 54
Which Mist AI feature would help you to troubleshoot a client's failed authentication?
- A. live view
- B. WLAN profile
- C. dynamic packet capture
- D. client dashboard
Answer: C
Explanation:
Dynamic packet capture is a Mist AI feature that allows you to capture packets from a specific client or AP without having to log in to the device or use a separate tool1. This feature can help you troubleshoot a client's failed authentication by providing detailed information about the authentication process, such as the EAP type, the RADIUS server, the certificate validation, and the error codes2. You can access the dynamic packet capture feature from the client dashboard or the live view in the Mist cloud portal1. You can also use the Marvis virtual network assistant to initiate a packet capture by using the command "troubleshoot client <mac-address>"3.
NEW QUESTION # 55
Referring to the exhibit, what do you determine about the site's Time to Connect SLE metric?
- A. All clients cannot connect to the Internet.
- B. Successful connect averaged 1.6 seconds.
- C. Time to Connect Association DHCP failures impacted 80% of users.
- D. Eighty percent of the Time to Connect failures are related to DHCP failures
Answer: B
NEW QUESTION # 56
Which two statements are correct about creating Mist sites? (Choose two.)
- A. You can only create and manage a single site with a Mist account.
- B. A Mist site can only belong to a single organization.
- C. You can create and manage multiple sites with a Mist account.
- D. A Mist site can belong to multiple organizations.
Answer: B,C
Explanation:
Reference:
The correct statements about creating Mist sites are:
A Mist site can only belong to a single organization. An organization is a logical grouping of sites and devices that share common settings and policies. A site is a physical location that contains one or more Mist devices. A site can only be associated with one organization and cannot be shared or moved to another organization1.
You can create and manage multiple sites with a Mist account. A Mist account is a user account that allows you to access the Mist portal and the Mist API. You can create and manage multiple sites within an organization or across different organizations with a Mist account, depending on your administrator role and permissions2.
NEW QUESTION # 57
Which location mode is required to track BLE badges?
- A. BLE asset visibility
- B. Wi-Fi location
- C. wayfinding
- D. vBLE Engagement
Answer: A
NEW QUESTION # 58
Which protocol is used by Mist access points to discover third-party switches?
- A. SNMP
- B. LLDP
- C. CDP
- D. ICMP
Answer: B
NEW QUESTION # 59
What are two valid Mist subscription status states in the Mist GUI? (Choose two.)
- A. Exceeded
- B. Expired
- C. Perpetual
- D. Staged
Answer: B,C
NEW QUESTION # 60
Which statement defines the total user minutes?
- A. The average number of minutes that all clients have been associated to the network.
- B. The total number of minutes between a client's last association and disassociation.
- C. The total number of minutes for which Mist has statistics for each client.
- D. The total amount of device uptime over the last seven days.
Answer: C
Explanation:
According to the web search results, the statement that defines the total user minutes is the total number of minutes for which Mist has statistics for each client. Total user minutes is a metric that measures the amount of time that clients are connected to the wireless network and have data available for analysis1. Total user minutes is calculated by summing up the number of minutes that each client is associated to the network and has statistics collected by Mist1. Total user minutes can be used to evaluate the network performance, user experience, and service level expectations (SLEs) of the wireless network1.
NEW QUESTION # 61
What is the minimum administrator role needed to invite a user to be an administrator of an organization?
- A. network admin
- B. installer
- C. helpdesk
- D. super user
Answer: D
Explanation:
The minimum administrator role needed to invite a user to be an administrator of an organization is the super user role. The super user role has read/write access to the entire organization and can manage all aspects of the organization, including inviting and assigning administrator roles to other users. To invite a user to be an administrator of an organization, the super user can navigate to Organization > Administrators and select Invite Administrator. Then, the super user can enter the name and email address of the user and choose an administrator role for them.
NEW QUESTION # 62
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Juniper JN0-251 (Mist AI, Associate (JNCIA-MistAI)) Certification Exam is a credential that validates the knowledge and skills of networking professionals in the field of Mist AI technology. Mist AI, Associate (JNCIA-MistAI) certification exam is designed for individuals who want to demonstrate their proficiency in deploying, configuring, and managing Juniper Mist AI wireless networks. It is an entry-level certification that provides a foundation for more advanced Juniper certification exams.
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