The Best Valid JN0-251 Dumps for Helping Passing JN0-251 Exam!
UPDATED Juniper JN0-251 Exam Questions & Answer
NEW QUESTION # 31
You are inviting a new administrator into a Mist organization.
In this scenario, which two roles are valid? (Choose two.)
- A. Advanced
- B. Observer
- C. Custom
- D. Installer
Answer: B,D
Explanation:
Reference:
You are inviting a new administrator into a Mist organization. In this scenario, the two roles that are valid are Observer and Installer. These are two of the predefined administrator roles that Mist offers for different levels of access and permissions. You can assign these roles to the new administrator when you invite them to join your organization.
The Observer role is a read-only role that allows the administrator to view and monitor the sites that they have access to. The Observer role can see 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 Installer role is a minimal role that allows the administrator to perform the initial installation tasks for the sites that they have access to. The Installer role can claim APs, assign APs to sites, or place APs on maps. However, they cannot unclaim or remove APs from the organization. They also cannot access the native Admin UI and have to use the API or the Mist AI App.
NEW QUESTION # 32
Which statement is correct about Mist SLEs?
- A. A Mist classifier is comprised of a single SLE.
- B. A Mist SLE is comprised of multiple classifiers.
- C. A Mist SLE is comprised of a single classifier.
- D. A Mist classifier is comprised of multiple SLEs.
Answer: B
NEW QUESTION # 33
When would be the earliest opportunity to configure an access point (AP)?
- A. after the AP is installed
- B. after the AP is online
- C. after you are on the same network as the AP
- D. after the AP is claimed to inventory
Answer: A
NEW QUESTION # 34
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 manually defined by the user.
- D. The Organization ID is randomly created by the system.
Answer: A,D
NEW QUESTION # 35
The Mist help menu provides direct access to which two features? (Choose two.)
- A. hardware updates
- B. company updates
- C. feature updates
- D. firmware updates
Answer: C,D
NEW QUESTION # 36
vBLE engagement works on transmit mode and has 1 m to 3 m accuracy using which feature?
- A. the Mist location SDK
- B. a BLE radio
- C. Wi-Fi IoT sensors
- D. Wi-Fi enabled devices
Answer: B
NEW QUESTION # 37
Which two methods are supported for configuring a Mist environment? (Choose two.)
- A. Use the GUI.
- B. Use the API.
- C. Use NETCONF.
- D. Use the CLI.
Answer: A,B
Explanation:
Reference:
According to the Juniper Networks documentation, there are two methods that are supported for configuring a Mist environment: using the API and using the GUI1. The API is a programmatic interface that allows you to interact with the Mist cloud and perform various tasks, such as creating and managing organizations, networks, sites, devices, users, and policies2. The API uses the RESTful architecture and supports JSON and XML formats2. You can use the API to automate and customize your Mist environment according to your needs2.
The GUI is a graphical user interface that allows you to access and manage your Mist environment through a web browser1. The GUI provides a user-friendly and intuitive way to configure and monitor your Mist devices, networks, sites, users, and policies3. The GUI also provides various features, such as dashboards, reports, analytics, insights, troubleshooting tools, and Marvis virtual network assistant3. You can use the GUI to easily and quickly set up and optimize your Mist environment3.
NEW QUESTION # 38
Which Marvis Action category will detect a bad cable based on information and behavior of a single AP?
- A. Switch
- B. Connectivity
- C. AP
- D. Layer 1
Answer: A
Explanation:
Reference:
According to the web search results, the Marvis Action category that will detect a bad cable based on information and behavior of a single AP is Switch1. The Switch category lists the issues related to the switches that are connected to the Mist APs, such as missing VLANs, L2 loops, or bad cables1. The bad cable action detects if an AP is connected to a switch port that has a faulty cable, which can cause packet loss, CRC errors, or link flaps1. The bad cable action is based on the information and behavior of a single AP, such as the AP's MAC address, IP address, switch port, and link status1. The bad cable action also provides a recommended solution, which is to replace the cable or use another switch port1.
NEW QUESTION # 39
When would be the earliest opportunity to configure an access point (AP)?
- A. after the AP is claimed to inventory
- B. after the AP is online
- C. after you are on the same network as the AP
- D. after the AP is installed
Answer: A
Explanation:
Reference:
This is the earliest opportunity to configure an access point (AP) in the Juniper Mist cloud. According to the Juniper Mist documentation1, the steps to configure an AP are as follows:
Claim the AP to inventory: This step involves entering the serial number or MAC address of the AP in the Juniper Mist cloud portal, which will add the AP to the inventory and assign it a subscription.
Assign the AP to a site: This step involves selecting a site from the inventory and dragging and dropping the AP to the site. This will apply the site-level settings and policies to the AP.
Configure the AP settings: This step involves editing the AP settings, such as name, location, labels, templates, and radio profiles. This can be done individually or in bulk for multiple APs.
NEW QUESTION # 40
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. Clients
- C. AP
- D. Application
Answer: A
NEW QUESTION # 41
What is a Mist Coverage SLE based upon?
- A. an average across APs
- B. an average of client data
- C. a summary of switch data
- D. a summary of user minutes
Answer: C
NEW QUESTION # 42
In a production network, what are two types of security threats? (Choose two.)
- A. scanning radio
- B. neighbor AP
- C. rogue AP
- D. honeypot AP
Answer: A,C
Explanation:
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.
NEW QUESTION # 43
Which two methods are supported for configuring a Mist environment? (Choose two.)
- A. Use the GUI.
- B. Use the API.
- C. Use NETCONF.
- D. Use the CLI.
Answer: A,B
NEW QUESTION # 44
What is an 802.11 management frame transmitted by an AP?
- A. ping
- B. beacon
- C. keepalive
- D. echo request
Answer: B
Explanation:
Reference:
According to the Wikipedia article on 802.11 Frame Types1, a beacon frame is a type of management frame that contains information about the network and is broadcast by the access point (AP) periodically to announce its presence and provide the necessary information for other devices to join the network. A beacon frame includes the following information elements:
Timestamp: a 64-bit value that represents the time when the AP started to transmit the frame.
Beacon Interval: a 16-bit value that indicates the time interval between beacon transmissions, measured in time units (TUs) of 1024 microseconds.
Capability Information: a 16-bit bitmap that specifies the supported features and capabilities of the network, such as encryption, authentication, and power management.
SSID: a variable-length field that contains the name of the network.
Supported Rates: a variable-length field that lists the data rates supported by the network, in units of 500 kbps.
Other optional information elements, such as country code, channel number, HT and VHT operations, RSN settings, and WMM parameters.
NEW QUESTION # 45
What does Mist with Wi-Fi Assurance do to detect a bad cable connected to an AP?
- A. It performs cable tests.
- B. It applies machine learning to telemetry data.
- C. It monitors SNMP trap information.
- D. It sends probe traffic through the cable connections.
Answer: A
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 # 46
Which Mist AI feature would help you to troubleshoot a client's failed authentication?
- A. live view
- B. client dashboard
- C. dynamic packet capture
- D. WLAN profile
Answer: C
NEW QUESTION # 47
What is an 802.11 management frame transmitted by an AP?
- A. ping
- B. beacon
- C. keepalive
- D. echo request
Answer: B
NEW QUESTION # 48
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