Juniper Mist AI, Associate Exam JN0-251 JNCIA-MistAI Exam Questions

Answer : A

If you want to review client information about a specific AP, you can go to the Access Points page in the Mist UI.The Access Points page shows a list of all the APs that are managed by your site, along with their status, model, firmware, location, and other details1.You can also use the search bar or the filter options to find a specific AP by its name, MAC address, serial number, or tag1.

By clicking on an AP from the list, you can access the AP Details page, which shows more information about the AP, such as its configuration, events, alerts, and insights2.On the AP Details page, you can also see the client information about the AP by clicking on the Clients tab2.The Clients tab shows a list of all the clients that are associated with the AP, along with their status, MAC address, IP address, hostname, role, SSID, VLAN, and other details2.You can also use the search bar or the filter options to find a specific client by its name, MAC address, IP address, or tag2.

By clicking on a client from the list, you can access the Client Details page, which shows more information about the client, such as its connection history, events, alerts, and insights3.On the Client Details page, you can also see the performance metrics of the client, such as its signal strength, data rate, latency, packet loss, throughput, and SLE scores3.You can also use the Troubleshoot button to launch Marvis virtual network assistant and get answers to your questions about the client3.

Therefore, if you want to review client information about a specific AP in the Mist UI, you can look at the Access Points page and then navigate to the AP Details page and the Clients tab.

Answer : A

According to the Mist documentation1, the Dashboard API is a modern,RESTfulAPI using HTTPS requests to a URL and JSON as a human-readable format. The API is available to any customer with a Mist account and is very well documented.

RESTful APIs are considered data-driven because they use HTTP methods (such as GET, POST, PUT, DELETE) to manipulate data resources on a server2. They also follow a set of design principles that make them scalable, uniform, and stateless.

Answer : A, C

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.

Answer : A

The correct answer is A. microservices based. This is the characteristic that describes Mist's cloud software architecture.Mist's cloud software architecture is based on microservices, which are small, independent, and loosely coupled software components that communicate with each other through APIs1.Microservices allow for faster development, deployment, scaling, and maintenance of cloud applications, as well as improved reliability, performance, and security1.Mist's cloud software architecture leverages microservices to provide AI-driven network management and operations, as well as innovative features such as vBLE engagement, Marvis Virtual Network Assistant, and Wi-Fi Assurance2.

Answer : D

The minimum administrator role needed to invite a user to be an administrator of an organization is thesuper userrole. 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.

Answer : A, B

According to the [Service Level Expectations] page, Service Level Expectations (SLEs) are a set of metrics that measure the quality and performance of the wireless network from the user's perspective. SLEs can help network administrators monitor, troubleshoot, and optimize their network by providing real-time and historical data and analytics. SLEs can also help network administrators identify and resolve issues before they impact the user experience.

There are seven SLEs that are supported by Mist: Successful Connects, Time to Connect, Capacity, Coverage, Throughput, Roaming, and WAN. Each SLE has a target value and a threshold value that can be customized according to the network requirements. The SLE score is calculated as the percentage of clients that meet or exceed the target value for each SLE.

Two SLEs that report DHCP problems are Successful Connects and Time to Connect. DHCP (Dynamic Host Configuration Protocol) is a protocol that assigns IP addresses and other network configuration parameters to devices on a network. DHCP problems can occur when a device fails to obtain an IP address from the DHCP server or when the DHCP server is slow or unreachable.

Successful Connects is an SLE that measures the percentage of clients that successfully connect to the wireless network within a specified time frame. Successful Connects can report DHCP problems by showing the number of clients that fail to connect due to DHCP errors, such as DHCP timeout, DHCP NAK, or DHCP decline. Successful Connects can also show the root cause analysis and recommended actions for resolving DHCP problems.

Time to Connect is an SLE that measures the average time it takes for a client to connect to the wireless network from the moment it sends a probe request to the moment it receives an IP address from the DHCP server. Time to Connect can report DHCP problems by showing the breakdown of the connection time into different stages, such as probe, auth, assoc, EAPOL, and DHCP. Time to Connect can also show the outliers and trends for each stage and identify if there are any delays or failures in the DHCP process.

Answer : C

According to the Cisco Content Hub1, Wi-Fi is half duplex, meaning we can either transmit (Tx) or receive (Rx) on the medium, the clients and the network take turns accessing the medium. Wi-Fi is contention based, meaning there are rules for stations trying to access the medium and collisions (due to two or more stations simultaneously accessing the medium) are worked out fairly so everyone gets a chance.