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The JN0-251 certification exam consists of 65 multiple-choice questions that must be completed within 90 minutes. JN0-251 exam covers a range of topics, including Mist AI architecture, deployment, configuration, monitoring, and troubleshooting. Candidates must achieve a passing score of 65% to earn the certification.
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.
NEW QUESTION # 17
You have just brought online a new site of AP43s. While verifying that everything looks good, you notice that all of the access points (APs) are reporting "insufficient power." The APs are connected to an 802. 3at-capable switch.
In this scenario, what would be the cause of the error?
- A. The Ethernet cable is plugged into the wrong port on the AP.
- B. LLDP-MED is not configured on the switch.
- C. The APs' firmware must be upgraded.
- D. The cable run to each AP is too long.
Answer: B
Explanation:
AP43s require PoE+ or 802.3at power to operate properly, which is 25.5 W at the switch port. However, some Cisco switches do not provide more than 802.3af power (15.4 W) unless negotiated via CDP or LLDP-MED. LLDP-MED is a protocol that allows devices to exchange information about their power requirements and capabilities. If LLDP-MED is disabled on the switch, the AP43s will not receive enough power and will show the insufficient power warning on the Mist UI12.
Therefore, to fix the error, you need to enable LLDP-MED on the switch or on the specific interfaces that connect to the AP43s. Alternatively, you can assign AT power to the AP43s manually on the switch. You can find more details on how to configure LLDP-MED on Cisco switches [here].
NEW QUESTION # 18
Mist Insights will provide detailed information about which two categories? (Choose two.)
- A. Organization
- B. Templates
- C. Client
- D. AP
Answer: C,D
Explanation:
Mist Insights is a feature that provides detailed information about the network performance and user experience of your Mist-managed sites, access points (APs), and clients1. You can use Mist Insights to monitor, troubleshoot, and optimize your network by accessing various types of data and analytics collected by the Mist cloud1.
Mist Insights allows you to view insights for different contexts, such as the entire site, a specific AP, or a specific client2. You can select the context from the dropdown menu on the Insights dashboard in the Mist portal2. Depending on the context, you can see different sections of information and insights, such as site events, client events, AP events, applications, network servers, pre-connection and post-connection metrics, current site properties, current WLANs, access points, clients, and wired switches2.
Therefore, AP and client are two categories that Mist Insights will provide detailed information about. You can learn more about Mist Insights from the Juniper Networks documentation or the Mist documentation.
NEW QUESTION # 19
Which two APIs are supported by Mist? (Choose two.)
- A. Webhook
- B. gRPC
- C. SOAP
- D. REST
Answer: A,D
Explanation:
According to the web search results, the two APIs that are supported by Mist are webhook and REST. A webhook is a way of sending data from the Mist cloud to a third-party application or service when a certain event occurs1. A webhook can be used to integrate Mist with various platforms, such as Slack, Splunk, ServiceNow, or Zapier1. A webhook can also be used to trigger custom actions, such as sending notifications, creating tickets, or updating databases1. You can configure webhooks in the Mist portal by selecting the organization, site, and event type that you want to send data to1.
A REST (Representational State Transfer) is a way of accessing and manipulating data from the Mist cloud using HTTP requests and responses2. A REST API can be used to perform various tasks, such as creating and managing organizations, networks, sites, devices, users, and policies2. A REST API uses JSON or XML as the data format and supports different HTTP methods, such as GET, POST, PUT, and DELETE2. You can use the REST API to automate and customize your Mist environment according to your needs2. You can access the REST API documentation in the Mist portal by clicking on the ? mark in the upper right of the UI2.
NEW QUESTION # 20
Mist cloud supports single sign-on in which two scenarios? (Choose two.)
- A. account login used for NETCONF
- B. account login used for the RESTful API
- C. admin login to the Mist portal
- D. Wi-Fi guest login access
Answer: B,D
NEW QUESTION # 21
In a Mist deployment, the Radio Resource Management feature is an example of which type of machine learning?
- A. unsupervised learning
- B. visual learning
- C. supervised learning
- D. reinforcement learning
Answer: C
NEW QUESTION # 22
Where in the Mist UI would the Persistently Failing Clients report be found?
- A. Successful Connects SLE
- B. Alerts
- C. Marvis Actions
- D. Insights
Answer: D
NEW QUESTION # 23
What is a Mist Coverage SLE based upon?
- A. a summary of user minutes
- B. an average across APs
- C. an average of client data
- D. a summary of switch data
Answer: A
Explanation:
Reference:
A Mist Coverage SLE is based upon a summary of user minutes. A user minute is defined as one minute of active client connection to the wireless network. A Mist Coverage SLE tracks the number of user minutes that a client's received signal strength indicator (RSSI) as measured by the access point is below the threshold configured by the network administrator. The RSSI is a measure of how well a client can hear the access point's signal. A low RSSI indicates poor coverage and can result in low throughput, high latency, or dropped connections.
The Mist Coverage SLE allows the network administrator to monitor and troubleshoot the coverage issues on the wireless network. The Mist Coverage SLE also provides classifiers that identify the root causes of poor coverage, such as asymmetry, interference, or low transmit power. The network administrator can use the Mist portal, the Marvis virtual network assistant, or the Mist API to view and manage the Mist Coverage SLE.
NEW QUESTION # 24
You are inviting a new administrator into a Mist organization.
In this scenario, which two roles are valid? (Choose two.)
- A. Observer
- B. Installer
- C. Advanced
- D. Custom
Answer: A,C
NEW QUESTION # 25
Which two statements are correct about microservices? (Choose two.)
- A. Each microservice uses the same virtual hardware.
- B. A microservice can be updated without system downtime.
- C. A microservice can be added without system downtime.
- D. All microservices can be updated at the same time without downtime.
Answer: B,C
NEW QUESTION # 26
Which characteristic describes Mist's cloud software architecture?
- A. controller based
- B. monolithic code
- C. shard based
- D. microservices based
Answer: D
NEW QUESTION # 27
How does Mist detect rogue APs?
- A. by using the AP's 2.4 GHz radio band
- B. by using Radio Resource Management (RRM)
- C. by using the AP's 5 GHz radio band
- D. by using the AP's third dedicated radio
Answer: D
NEW QUESTION # 28
What is the minimum administrator role needed to invite a user to be an administrator of an organization?
- A. super user
- B. helpdesk
- C. network admin
- D. installer
Answer: A
NEW QUESTION # 29
Under ideal conditions, which frequency band will have the farthest usable range?
- A. 2.4 GHz
- B. 5 GHz
- C. 900 MHz
- D. 6 GHz
Answer: C
Explanation:
Reference:
The correct answer is A. 900 MHz. This is the frequency band that will have the farthest usable range under ideal conditions. The range of a wireless signal depends on several factors, such as the transmit power, the antenna gain, the receiver sensitivity, the propagation environment, and the interference level1. However, in general, lower frequency signals can travel farther than higher frequency signals, as they have less attenuation (signal loss) and can penetrate solid objects better2. The 900 MHz band is a lower frequency band than the 2.4 GHz, 5 GHz, and 6 GHz bands, which are commonly used for Wi-Fi and other wireless technologies3. Therefore, the 900 MHz band will have the farthest usable range under ideal conditions. However, the 900 MHz band also has less bandwidth and speed than the higher frequency bands, as well as more interference from other devices that use the same band3. Therefore, the 900 MHz band may not be suitable for some wireless applications that require high data rates or low latency.
NEW QUESTION # 30
You want to determine where you have coverage issues in your network using Marvis Actions.
Which Marvis Action category should you use in this situation?
- A. Connectivity
- B. Application
- C. Clients
- D. AP
Answer: D
Explanation:
You want to determine where you have coverage issues in your network using Marvis Actions. The Marvis Action category that you should use in this situation is AP. The AP category contains actions that are related to the access points on your network, such as offline APs, health check failed APs, non-compliant APs, and coverage hole APs.
The coverage hole AP action will detect any coverage issues on your site and provide a floorplan visual of the APs on your map experiencing these issues. You can use this visual to find the low coverage spaces identified on your site and make the necessary improvements. You can also view the details of the coverage hole action, such as the number of affected clients, the average RSSI, and the root cause classifier.
To access the AP category of Marvis Actions, you need to navigate to Marvis > Actions and select the AP tab. You will see a list of all the AP actions that are detected on your network. You can filter and sort the actions by various criteria, such as site, severity, status, or date. You can also perform actions on the APs, such as upgrade, RMA, or block.
NEW QUESTION # 31
Which two statements are correct about creating Mist sites? (Choose two.)
- A. A Mist site can belong to multiple organizations.
- B. A Mist site can only belong to a single organization.
- C. You can only create and manage a single site with a Mist account.
- D. You can create and manage multiple sites with a Mist account.
Answer: B,D
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 # 32
The status of user authentication will affect which pair of SLEs?
- A. Time to Connect and Throughput
- B. Capacity and Successful Connects
- C. Successful Connects and Time to Connect
- D. Coverage and Roaming
Answer: C
Explanation:
The status of user authentication will affect the pair of SLEs: Successful Connects and Time to Connect. These are two of the eight SLEs that Mist provides to measure the wireless network performance and user experience. SLE stands for Service Level Expectation and is a metric that tracks the percentage of time that a specific network condition is met within a given time range.
The Successful Connects SLE measures the percentage of time that the wireless clients can successfully authenticate and associate to the network. The Time to Connect SLE measures the average time that it takes for the wireless clients to complete the authentication and association process. Both of these SLEs depend on the status of user authentication, which is the process of verifying the identity and credentials of the wireless clients.
If the user authentication fails or takes too long, it will negatively affect the Successful Connects and Time to Connect SLEs. The user authentication can fail or take too long due to various reasons, such as incorrect credentials, unsupported encryption type, misconfigured RADIUS server, network congestion, etc. Mist can detect and classify these issues and provide alerts and recommendations to resolve them.
NEW QUESTION # 33
Which two statements are correct about an Organization ID? (Choose two.)
- A. The Organization ID is used to identify the organization when using APIs.
- B. The Organization ID is the encrypted version of the Organization Name field.
- C. The Organization ID is randomly created by the system.
- D. The Organization ID is manually defined by the user.
Answer: A,C
NEW QUESTION # 34
Besides providing AP configuration status, for which other purpose is the LED used in the location design phase?
- A. channels in use
- B. frequency selection
- C. height orientation
- D. antenna orientation
Answer: D
NEW QUESTION # 35
Which administrator role is based on a timed grace period for Mist site and AP configuration access?
- A. Observer
- B. Network Admin
- C. Installer
- D. Helpdesk
Answer: C
NEW QUESTION # 36
Which administrator role must you have to view audit logs?
- A. Installer
- B. Super User
- C. Observer
- D. Network Admin
Answer: D
Explanation:
According to the web search results, the administrator role that you must have to view audit logs is Network Admin. Audit logs are records of the actions and changes that occur on the Mist platform, such as configuration updates, firmware upgrades, device claims, or user logins1. Audit logs can help network administrators monitor, troubleshoot, and audit their network by providing information such as the date, time, user, site, device, and description of each action1.
According to the Administrator Roles page, there are five types of roles that can be assigned to users in a Mist organization: Super User, Network Admin, Helpdesk, Observer, and Installer2. Each type of role has different read and write capabilities for the organization and its sites2. Network Admin is one of the roles that can view audit logs, as it has limited read/write access to all sites under the organization and can access organization-level features such as Audit Logs and Inventory2. Network Admin can also open/update support tickets from the GUI2.
NEW QUESTION # 37
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Juniper JN0-251 (Mist AI, Associate (JNCIA-MistAI)) Certification Exam is a highly specialized certification program offered by Juniper Networks, a leading provider of network solutions. Mist AI, Associate (JNCIA-MistAI) certification exam is designed to test the knowledge and skills of individuals who are interested in using Juniper's Mist AI technology for managing and optimizing wireless networks. Mist AI, Associate (JNCIA-MistAI) certification program is focused on helping IT professionals to gain the necessary expertise for effectively managing wireless networks using Mist AI.
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