JN0-251 Sample Questions Answers

According to the web search results, the Mist Location Engine is a service that provides location-based services (LBS) for wireless networks, such as indoor positioning, wayfinding, or asset tracking1. The Mist Location Engine uses a patented dynamic BLE array that consists of 16 directional antennas that transmit BLE signals in eight different directions2. The user device, such as a smartphone or a tablet, can receive these signals and send the signal information, such as the RSSI and the device sensor data, back to the Mist Location Engine via Wi-Fi or cellular2.

The Mist Location Engine then processes the signal information and uses machine learning and probability surfaces to determine the location of the user device2. The location is expressed as an x,y coordinate on a floor plan map that represents the highest probability of where the user device is located2. The Mist Location Engine can also provide other information, such as the location accuracy, the location history, and the location events of the user device2.

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.

A rogue AP is an unauthorized access point that is installed on a network without the knowledge or consent of the network administrator. A rogue AP can pose a serious security threat to a network, as it can allow attackers to bypass the network’s security policies and gain access to sensitive data or launch other attacks. A rogue AP can also interfere with the performance of the legitimate APs and cause network congestion or degradation.

A scanning radio is a device that can scan the wireless spectrum and detect the presence and characteristics of wireless networks. A scanning radio can be used for legitimate purposes, such as network monitoring, troubleshooting, or optimization. However, a scanning radio can also be used for malicious purposes, such as discovering vulnerable networks, capturing network traffic, or launching denial-of-service attacks. A scanning radio can pose a security threat to a network, as it can expose the network’s SSID, encryption type, channel, and signal strength.

https://www.mist.com/documentation/administrator-roles/

The two roles that are available to the new user to administer specific sites in read-only mode are Helpdesk and Observer. These roles have read-only access to the allowed sites and can view the site-level features, such as monitor, clients, access points, location, analytics, and network. However, they cannot configure or modify any organization-level features or claim APs.

The correct answer is B. 2 hops. A Mist mesh network supports up to two hops between the root AP and the leaf AP1. A mesh network is a wireless network that allows APs to communicate with each other without a wired connection. The root AP is the AP that has a wired connection to the network, and the leaf AP is the AP that connects to the root AP or another leaf AP wirelessly. A hop is the number of wireless links between the root AP and the leaf AP. A Mist mesh network can have up to two hops, meaning that a leaf AP can connect to another leaf AP that is one hop away from the root AP1. This allows for more flexibility and coverage in areas where wired connections are not available or feasible1.

1: Mist Mesh Network

The step that you would take to immediately find out the status of the Mist cloud is to visit https://status.mist.com. This is the official website that provides real-time information and updates on the availability and performance of the Mist cloud services, such as the Mist portal, the Mist API, the Mist AI engine, and the Mist regions. You can also subscribe to receive notifications via email, SMS, or webhook when there are any incidents or maintenance events affecting the Mist cloud.

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 "3.

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.

According to the web search results, Mist cloud supports single sign-on (SSO) in two scenarios: Wi-Fi guest login access and admin login to the Mist portal. SSO is a feature that allows users to log in to multiple applications or services with one set of credentials, without having to enter them repeatedly1. SSO can provide convenience, security, and efficiency for users and administrators1.

Wi-Fi guest login access is a scenario where users can access the Wi-Fi network as guests using their existing social media or email accounts, such as Facebook, Google, or LinkedIn2. Mist cloud supports SSO for Wi-Fi guest login access by integrating with various identity providers (IdPs), such as Azure AD, Okta, Ping Identity, or OneLogin2. Mist cloud can also use webhooks to send guest login data to third-party applications or services, such as Slack, Splunk, or ServiceNow2.

Admin login to the Mist portal is a scenario where administrators can access the Mist dashboard using their existing corporate accounts, such as Office 365, G Suite, or Active Directory3. Mist cloud supports SSO for admin login to the Mist portal by integrating with various IdPs, such as Azure AD, Okta, Ping Identity, or OneLogin3. Mist cloud can also use the REST API to automate and customize the admin login process3.