[Dec-2023] JN0-251 Certification with Actual Questions from It-Tests [Q45-Q66] – IT Certification Exam Questions & Answers

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[Dec-2023] JN0-251 Certification with Actual Questions from It-Tests

Updated JN0-251 Dumps PDF – JN0-251 Real Valid Brain Dumps With 79 Questions!

To prepare for the JN0-251 certification exam, Juniper Networks offers a range of training courses, including instructor-led training, e-learning, and self-study options. These courses cover the key concepts and skills required for the certification exam, and provide hands-on experience with the Mist AI platform. Additionally, candidates can access practice exams and study materials to help them prepare for the exam.

NO.45 Users are complaining about WLAN performance and the Mist dashboard reports non-Wi-Fi interference.
Which diagnostics tool would you use to further investigate this issue on-site and determine the location of the interference?

spectrum analyzer

protocol analyzer

wireless design software

WLAN scanner

Reference:
The correct answer is A. spectrum analyzer. This is the diagnostics tool that you would use to further investigate the issue of non-Wi-Fi interference on-site and determine the location of the interference. A spectrum analyzer is a device that measures and displays the frequency and amplitude of the electromagnetic signals in a given spectrum1. A spectrum analyzer can help you identify the sources and types of non-Wi-Fi interference, such as microwave ovens, cordless phones, Bluetooth devices, or radar systems, that may affect the WLAN performance2. A spectrum analyzer can also help you locate the interference by showing the signal strength and direction of the interfering signals2.

NO.46 What are two prerequisites for adopting Juniper switches for Wired Assurance? (Choose two.)

a claim code

a Wired Assurance license

an activation code

an account on manage.mist.com

NO.47 Which two domains comprise artificial intelligence (AI)? (Choose two.)

machine learning

deep learning

SIEM

virtualization

NO.48 How does Mist detect rogue APs?

by using the AP’s 2.4 GHz radio band

by using Radio Resource Management (RRM)

by using the AP’s third dedicated radio

by using the AP’s 5 GHz radio band

NO.49 Referring to the exhibit, what do you determine about the site’s Time to Connect SLE metric?

Successful connect averaged 1.6 seconds.

Eighty percent of the Time to Connect failures are related to DHCP failures

All clients cannot connect to the Internet.

Time to Connect Association DHCP failures impacted 80% of users.

NO.50 Which two statements are correct about creating Mist sites? (Choose two.)

A Mist site can only belong to a single organization.

You can create and manage multiple sites with a Mist account.

You can only create and manage a single site with a Mist account.

A Mist site can belong to multiple organizations.

NO.51 Mist Insights will provide detailed information about which two categories? (Choose two.)

Client

Organization

Templates

NO.52 What are three alert levels used in the Mist UI? (Choose three.)

critical

warning

error

notice

informational

NO.53 Which two SLEs report DHCP problems? (Choose two.)

Successful Connects

Time to Connect

Capacity

Throughput

NO.54 Which statement is correct about Mist SLEs?

A Mist classifier is comprised of multiple SLEs.

A Mist SLE is comprised of multiple classifiers.

A Mist classifier is comprised of a single SLE.

A Mist SLE is comprised of a single classifier.

NO.55 In the Mist Access Point portfolio, which dedicated device would be used in location-based services (LBS)?

AP34

AP32

BT11

AP12

NO.56 How does Mist detect rogue APs?

by using the AP’s 2.4 GHz radio band

by using Radio Resource Management (RRM)

by using the AP’s third dedicated radio

by using the AP’s 5 GHz radio band

Reference:
According to the web search results, Mist detects rogue APs by using the AP’s third dedicated radio, which is used for scanning the wireless spectrum and detecting unauthorized APs on both 2.4 GHz and 5 GHz radio bands1. A rogue AP is an unauthorized access point that is installed on a network without the knowledge or consent of the network administrator1. 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 attacks1. A rogue AP can also interfere with the performance of the legitimate APs and cause network congestion or degradation1.
Mist APs have three radios: one for 2.4 GHz, one for 5 GHz, and one for scanning1. The scanning radio is used for detecting rogue, neighbor, and honeypot APs on both 2.4 GHz and 5 GHz radio bands1. This means that regardless of which radios you have enabled on your AP (2.4 GHz or 5 GHz), it will still be able to detect unauthorized APs at any frequency using the scanning radio1. The scanning radio can also provide other benefits, such as monitoring the network performance, optimizing the channel selection, and enhancing the location services1.
Therefore, based on the web search results, Mist detects rogue APs by using the AP’s third dedicated radio, which is used for scanning the wireless spectrum and detecting unauthorized APs on both 2.4 GHz and 5 GHz radio bands.

NO.57 Which Mist supported API is considered data-driven?

RESTful

Webhook

WebSocket

gRPC

According to the Mist documentation1, the Dashboard API is a modern, RESTful API 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.

NO.58 Which two statements are correct when managing switches located in a Mist-managed site? (Choose two.)

The site firewall must allow communications from the switch to Mist.

A switch template must be assigned to the site.

The site must have Mist access points.

The switch must be assigned to the site.

NO.59 Which protocol is used by Mist access points to discover third-party switches?

LLDP

SNMP

CDP

ICMP

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.

NO.60 How should APs be deployed for location-based services (LBS)?

with the LED facing the floor

with the LED facing the ceiling

with the LED facing a wall

with the AP mounted on a wall

NO.61 You are inviting a new administrator into a Mist organization.
In this scenario, which two roles are valid? (Choose two.)

Advanced

Observer

Installer

Custom

NO.62 Which location mode is required to track BLE badges?

wayfinding

BLE asset visibility

Wi-Fi location

vBLE Engagement

NO.63 Referring to the exhibit, what do you determine about the site’s Time to Connect SLE metric?

Successful connect averaged 1.6 seconds.

Eighty percent of the Time to Connect failures are related to DHCP failures

All clients cannot connect to the Internet.

Time to Connect Association DHCP failures impacted 80% of users.

The correct answer is B. Eighty percent of the Time to Connect failures are related to DHCP failures. This is what you can determine about the site’s Time to Connect SLE metric from the exhibit. The exhibit shows a root cause analysis chart that displays the Service Level Metrics and the Classifiers for the site. The Service Level Metrics section shows the percentage of time to connect, which is the time it takes for a client device to connect to the wireless network. The Classifiers section shows the percentage of authorization, association, internet services, and DHCP, which are the steps involved in the connection process. The blue line connects the two sections and shows the correlation between them.
The exhibit shows that the site has a Time to Connect SLE metric of 20%, which means that only 20% of the client devices were able to connect to the wireless network within the expected time. The exhibit also shows that 80% of the Time to Connect failures are related to DHCP failures, which means that 80% of the client devices were not able to obtain an IP address from the DHCP server. This indicates that there is a problem with the DHCP service or configuration at the site.

NO.64 A user device sends signal information to the Mist Location Engine.
In this scenario, what is expected from the Mist Location Engine?

product advertisements

coordinates

sensor device information

NO.65 Which machine learning method involves rewarding and punishing an agent?

unsupervised learning

supervised learning

deep learning

reinforcement learning

This is a machine learning method that involves rewarding and punishing an agent for its actions in an environment. The agent learns by trial and error to maximize the rewards and minimize the penalties. This is how Mist AI performs Radio Resource Management (RRM) to optimize the RF radio waves that transmit network traffic in wireless LANs1.

NO.66 Which administrator role is based on a timed grace period for Mist site and AP configuration access?

Observer

Network Admin

Installer

Helpdesk

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Juniper JN0-251 (Mist AI, Associate (JNCIA-MistAI)) Certification Exam is a valuable credential for networking professionals 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. Candidates who pass the exam will be recognized as experts in Mist AI technology and will be well-positioned to advance their careers in the field of networking.

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