Download the Latest JN0-251 Dumps - 2024 JN0-251 Exam Questions
Latest Juniper JN0-251 Certification Practice Test Questions
The JN0-251 exam is a multiple-choice exam that consists of 65 questions. Candidates have 90 minutes to complete the exam and must achieve a score of 65% or higher to pass. JN0-251 exam is available at Pearson VUE testing centers worldwide, and registration can be completed online.
NEW QUESTION # 35
Which two methods are supported for configuring a Mist environment? (Choose two.)
- A. Use the API.
- B. Use NETCONF.
- C. Use the CLI.
- D. Use the GUI.
Answer: A,D
NEW QUESTION # 36
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?
- A. spectrum analyzer
- B. wireless design software
- C. WLAN scanner
- D. protocol analyzer
Answer: A
Explanation:
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.
NEW QUESTION # 37
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. LLDP-MED is not configured on the switch.
- B. The APs' firmware must be upgraded.
- C. The Ethernet cable is plugged into the wrong port on the AP.
- D. The cable run to each AP is too long.
Answer: A
NEW QUESTION # 38
Mist has detected a bad cable.
What are two ways that Marvis determined this result? (Choose two.)
- A. It identified port flapping.
- B. It identified network loops.
- C. It identified interface errors.
- D. It identified a missing VLAN.
Answer: A,B
NEW QUESTION # 39
Which administrator role must you have to view audit logs?
- A. Observer
- B. Super User
- C. Network Admin
- D. Installer
Answer: B
NEW QUESTION # 40
A user device sends signal information to the Mist Location Engine.
In this scenario, what is expected from the Mist Location Engine?
- A. product advertisements
- B. sensor device information
- C. login splash page
- D. coordinates
Answer: D
Explanation:
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.
NEW QUESTION # 41
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. Application
- B. Clients
- C. AP
- D. Connectivity
Answer: D
NEW QUESTION # 42
Which two statements are correct about label configuration? (Choose two.)
- A. Labels created at the site level can be applied at the organization level.
- B. Labels can only be created at the organization level.
- C. Labels created at the organization level can be used in WLAN templates.
- D. Labels can be created at either the organization level or site level.
Answer: C,D
Explanation:
According to the web search results, labels are a key feature for Mist, as they can be used to make decisions and policies easier to understand. Labels are similar to tags or groups that represent a collection of users or resources. Labels can be used to classify your users and resources while building the WxLAN policies, which define a list of rules, restrictions, and other settings that can be applied to devices in order to change how they are treated by the network1. Labels can also be used to create a group of access points and apply a WLAN configuration using the apply to Access Points configuration while creating a WLAN1.
NEW QUESTION # 43
You want to review client information about a specific AP.
In this scenario, where in the UI would you look?
- A. Access Points
- B. Client Insights
- C. SLEs
- D. AP Insights
Answer: A
Explanation:
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.
NEW QUESTION # 44
How does Mist detect rogue APs?
- A. by using the AP's third dedicated radio
- B. by using the AP's 2.4 GHz radio band
- C. by using the AP's 5 GHz radio band
- D. by using Radio Resource Management (RRM)
Answer: C
NEW QUESTION # 45
Which statement is correct regarding settings at the organizational level?
- A. The organizational level is where you specify information about each AP's placement.
- B. The organizational level is where you specify customer-level global details.
- C. The organizational level is where you enable BLE capabilities, if you have a license.
- D. The organizational level is where you define each location's specific information.
Answer: B
Explanation:
According to the official Mist documentation1, the organization level contains customer specific details such as name, password and session policies, certificate, and management tunnel. You can also create switch templates and port profiles at the organization level, which can be applied to all the devices in a given group. You can also configure the managed service provider setting at the organization level, if you want to bring independently created Mist organizations under MSP managed umbrella2.
NEW QUESTION # 46
A Mist mesh network supports up to how many hops?
- A. 1 hop
- B. 3 hops
- C. 2 hops
- D. 4 hops
Answer: D
NEW QUESTION # 47
How should APs be deployed for location-based services (LBS)?
- A. with the LED facing the floor
- B. with the AP mounted on a wall
- C. with the LED facing the ceiling
- D. with the LED facing a wall
Answer: A
NEW QUESTION # 48
Which statement is correct about Mist SLEs?
- A. A Mist SLE is comprised of a single classifier.
- B. A Mist classifier is comprised of a single SLE.
- C. A Mist SLE is comprised of multiple classifiers.
- D. A Mist classifier is comprised of multiple SLEs.
Answer: B
NEW QUESTION # 49
You are asked to bring Mist APs online for your organization.
In this situation, which port must be allowed on your company's firewall for AP access to the Mist cloud?
- A. TCP/443
- B. TCP/80
- C. UDP/22
- D. UDP/1812
Answer: A
Explanation:
Reference:
According to the web search results, TCP/443 is the port that must be allowed on your company's firewall for AP access to the Mist cloud. TCP/443 is the port that is used for HTTPS, which is a secure version of HTTP that encrypts the data sent between the client and the server1. Mist APs use HTTPS to communicate with the Mist cloud and receive their configuration, firmware, and policies2. TCP/443 is also the port that is used for ep-terminator, which is a service that provides encrypted tunneling between Mist APs and the Mist cloud3. Therefore, TCP/443 is the port that must be allowed on your company's firewall for AP access to the Mist cloud.
NEW QUESTION # 50
Click the Exhibit button.
You notice a green LED emitted from your AP43.
Referring to the exhibit, what does this signal indicate?
- A. The AP is configured correctly with no users connected to it.
- B. The AP is not configured correctly with no users connected to it.
- C. The AP is configured correctly and at least one user is connected to it.
- D. The AP is not configured correctly but one user is connected to it.
Answer: C
NEW QUESTION # 51
Which two statements are correct about creating Mist sites? (Choose two.)
- A. You can only create and manage a single site with a Mist account.
- B. A Mist site can belong to multiple organizations.
- C. You can create and manage multiple sites with a Mist account.
- D. A Mist site can only belong to a single organization.
Answer: B,C
NEW QUESTION # 52
Which statement defines the total user minutes?
- A. The total number of minutes between a client's last association and disassociation.
- B. The total number of minutes for which Mist has statistics for each client.
- C. The total amount of device uptime over the last seven days.
- D. The average number of minutes that all clients have been associated to the network.
Answer: A
NEW QUESTION # 53
Which statement is correct about a WLAN RF medium?
- A. A WLAN RF is a full duplex, contention free medium where each client transmits on a separate channel.
- B. A WLAN RF is a half-duplex, shared medium where 802.11 stations contend with each other for access.
- C. A WLAN RF is a half-duplex, contention-free medium where the access point polls each station in turn.
- D. A WLAN RF is a full-duplex, contention-free medium where 802.11 stations can transmit and receive at the same time.
Answer: B
Explanation:
Reference:
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.
NEW QUESTION # 54
Which statement defines the total user minutes?
- A. The total number of minutes for which Mist has statistics for each client.
- B. The total amount of device uptime over the last seven days.
- C. The average number of minutes that all clients have been associated to the network.
- D. The total number of minutes between a client's last association and disassociation.
Answer: A
NEW QUESTION # 55
You attempt to log in to manage.mist.com, however you receive a 404 error from your browser. You are able to browse other public websites and you suspect a problem with manage.mist.com.
In this scenario, which step would you take to immediately find out the status of the Mist cloud?
- A. Visit https://support.juniper.net/support/.
- B. Visit https://status.mist.com.
- C. Visit https://mist.com/status.
- D. Visit https://www.mist.com/support.
Answer: B
NEW QUESTION # 56
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. Application
- B. Clients
- C. AP
- D. Connectivity
Answer: C
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 # 57
......
Verified JN0-251 Dumps Q&As - 1 Year Free & Quickly Updates: https://www.prep4away.com/Juniper-certification/braindumps.JN0-251.ete.file.html
Get 2024 Updated Free Juniper JN0-251 Exam Questions and Answer: https://drive.google.com/open?id=1A2kBA2DWeVTUk_-DSulhV9XzghrXmjML