2024 Best JN0-451 Exam Preparation Material with New Dumps Questions
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Juniper JN0-451 exam covers a range of topics related to Juniper Mist AI technology, including the design and deployment of network infrastructures, cloud-based management systems, network security, and troubleshooting techniques. Candidates are also expected to have a strong understanding of networking protocols such as TCP/IP, VLANs, and routing protocols.
NEW QUESTION # 29
Referring to the exhibit, what is the site ID?
- A. 02e208b2d34f
- B. 978c48e6-6ef6-11e6-8bbf-02e208b2d34f
- C. 02e208b2d34
- D. 9777c1a0-6ef6-11e6-8bbf-02e208b2d34
Answer: B
NEW QUESTION # 30
A retail customer has legacy 2.4 GHz scanners that need to connect to the WLAN, but they are not connecting.
Which WLAN data rate setting is required for these devices to connect?
- A. Custom Rates
- B. Compatible
- C. High Density
- D. No Legacy
Answer: B
Explanation:
Explanation
The Compatible WLAN data rate setting is required for legacy 2.4 GHz scanners to connect to the WLAN.
NEW QUESTION # 31
Which two SLEs measure the amount of time that it takes for a process to complete? (Choose two.)
- A. roaming
- B. time to connect
- C. AP uptime
- D. throughput
Answer: A,B
Explanation:
Explanation
Two SLEs that measure amount of time it takes for process to complete are roaming and time to connect.So,the correct answers are A.roaming and D.time to connect
NEW QUESTION # 32
Under which hierarchy level would you create a new site configuration?
- A. access points
- B. clients
- C. location
- D. organization
Answer: D
Explanation:
Explanation
To create a new site configuration in Juniper Mist UI, you would do so under the organization hierarchy level.
So the correct answer is D. organization.
NEW QUESTION # 33
Which two authentication methods would be used with a guest portal? (Choose two.)
- A. external portal
- B. Kerberos
- C. RSA
- D. social login
Answer: A,D
Explanation:
Two authentication methods that would be used with a guest portal are social login and external portal. So the correct answers are A. social login and B. external portal.
According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide2, two authentication methods that can be used with a guest portal are:
Social login, which allows guests to log in using their social media accounts such as Facebook, Twitter, or Google.
External portal, which allows guests to log in using an external web server that hosts a custom portal page.
NEW QUESTION # 34
Asset tracking using Mist-supported third-party BLE beacons has been installed in a warehouse. The BLE beacons were configured using their manufacturer-supplied configuration utility and BLE was properly configured for the site settings. When the warehouse floor plan is opened in Live View, the third-party beacons are not shown.
Which two statements describe causes for this issue? (Choose two.)
- A. The Locate this Client as an Asset check box has not been selected at the BLE client level.
- B. The APs are installed at 19 feet from the floor, above the recommended 15 feet.
- C. The Show assets check box has not been selected in Live View.
- D. Marvis was not enabled for the site.
Answer: A,C
Explanation:
According to the Mist documentation1, asset tracking is a service that allows you to find key assets and people with detailed analytics based on their location using Mist-supported third-party BLE beacons. To enable asset tracking, you need to configure both the BLE beacons and the Mist cloud settings.
The Show assets check box is a setting in Live View that allows you to display or hide the assets on the floor plan2. If this check box is not selected, you will not be able to see the third-party beacons on Live View.
The Locate this Client as an Asset check box is a setting at the BLE client level that allows you to treat a BLE client as an asset for location purposes3. If this check box is not selected, you will not be able to track the BLE client as an asset.
NEW QUESTION # 35
Asset tracking using Mist-supported third-party BLE beacons has been installed in a warehouse. The BLE beacons were configured using their manufacturer-supplied configuration utility and BLE was properly configured for the site settings. When the warehouse floor plan is opened in Live View, the third-party beacons are not shown.
Which two statements describe causes for this issue? (Choose two.)
- A. The Locate this Client as an Asset check box has not been selected at the BLE client level.
- B. The APs are installed at 19 feet from the floor, above the recommended 15 feet.
- C. The Show assets check box has not been selected in Live View.
- D. Marvis was not enabled for the site.
Answer: A,C
NEW QUESTION # 36
Your customer added an Apple TV in their conference room so that employees can easily share their screen. However, the Apple TV cannot be discovered by the employees' devices.
Which two settings are causing the problem? (Choose two.)
- A. Ignore Broadcast SSID Probe Requests
- B. Broadcast/Multicast
- C. MDNS
- D. ARP
Answer: B,C
Explanation:
If a customer added an Apple TV in their conference room so that employees can easily share their screen but the Apple TV cannot be discovered by the employees' devices, two settings that could be causing this problem are MDNS and Broadcast/Multicast. So the correct answers are A. MDNS and B. Broadcast/Multicast.
NEW QUESTION # 37
Which two SLEs measure the amount of time that it takes for a process to complete? (Choose two.)
- A. throughput
- B. roaming
- C. time to connect
- D. AP uptime
Answer: A,C
NEW QUESTION # 38
What do 802.11 stations perform to help avoid collisions on the WLAN medium?
- A. Transmit on a fixed schedule.
- B. Listen to verify that the medium is free before transmitting.
- C. Stations only transmit when polled by the access point.
- D. 802.11 stations detect collisions and set a back-off timer.
Answer: B
Explanation:
Reference:
According to the IEEE 802.11 - Wikipedia document, one thing that 802.11 stations perform to help avoid collisions on the WLAN medium is to listen to verify that the medium is free before transmitting. This is part of the carrier-sense multiple access with collision avoidance (CSMA/CA) mechanism that 802.11 stations use to coordinate access to the shared medium.
NEW QUESTION # 39
You are deploying three WLAN 2.4 GHz networks in your US-based site. You must ensure that each network frequency is unique and does not overlap with the other frequency channels.
In this scenario, which three OFDM channels should be used? (Choose three.)
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: A,B,D
Explanation:
When deploying three WLAN 2.4 GHz networks in your US-based site while ensuring that each network frequency is unique and does not overlap with other frequency channels, you should use OFDM channels 1, 6 and 11. So the correct answers are B.1, D.6, and A.11.
NEW QUESTION # 40
What do 802.11 stations perform to help avoid collisions on the WLAN medium?
- A. Transmit on a fixed schedule.
- B. Listen to verify that the medium is free before transmitting.
- C. Stations only transmit when polled by the access point.
- D. 802.11 stations detect collisions and set a back-off timer.
Answer: B
Explanation:
Reference:
According to the IEEE 802.11 - Wikipedia document, one thing that 802.11 stations perform to help avoid collisions on the WLAN medium is to listen to verify that the medium is free before transmitting. This is part of the carrier-sense multiple access with collision avoidance (CSMA/CA) mechanism that 802.11 stations use to coordinate access to the shared medium.
NEW QUESTION # 41
Which Wireless Assurance SLE provides information on whether a user is able to associate to the WLAN?
- A. Throughput
- B. Capacity
- C. Roaming
- D. Successful Connect
Answer: D
Explanation:
The Wireless Assurance SLE that provides information on whether a user is able to associate to the WLAN is Successful Connect. So the correct answer is A. Successful Connect.
NEW QUESTION # 42
A retail customer has legacy 2.4 GHz scanners that need to connect to the WLAN, but they are not connecting.
Which WLAN data rate setting is required for these devices to connect?
- A. Custom Rates
- B. Compatible
- C. High Density
- D. No Legacy
Answer: B
Explanation:
The Compatible WLAN data rate setting is required for legacy 2.4 GHz scanners to connect to the WLAN.
According to the Data Rates - Mist document4, the WLAN data rate setting that is required for legacy 2.4 GHz scanners to connect to the WLAN is Compatible. This setting enables all data rates from 1 Mbps to 54 Mbps for both 2.4 GHz and 5 GHz bands. This setting is recommended for legacy devices that need low data rates to connect.
NEW QUESTION # 43
Click the Exhibit button.
Referring to the exhibit, which percentage of connection attempts failed on the access point named LD_RS_Support?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
Explanation
63% of connection attempts failed on the access point named LD_RS_Support.
NEW QUESTION # 44
What is the AP's role in the IEEE 802.1X authentication process?
- A. It acts as an authentication server.
- B. It acts as a RADIUS proxy server.
- C. It acts as a supplicant.
- D. It acts as an authenticator.
Answer: D
Explanation:
Explanation
In the IEEE 802.1X authentication process, the AP acts as an authenticator.
NEW QUESTION # 45
Click the Exhibit button.
A user opened a ticket. Upon troubleshooting, you determine that frequent roaming is the root cause of the problem.
Referring to the exhibit, which statement describes the roaming issue that the client is experiencing?
- A. There are frequent roams between different WLANs.
- B. There are frequent roams between different protocols.
- C. There are frequent roams between different bands.
- D. There are frequent roams between different access points.
Answer: D
Explanation:
Explanation
The exhibit shows a graph of the client's roaming history over time. The x-axis represents the time and the y-axis represents the access point ID. Each dot on the graph indicates a roam event where the client switched from one access point to another.
The graph shows that the client roamed between different access points multiple times within a short period of time. This indicates that the client was experiencing frequent roams between different access points, which could affect its network performance and user experience.
NEW QUESTION # 46
Which two terms correctly describe transmissions over Wi-Fi? (Choose two.)
- A. shared medium
- B. point-to-point medium
- C. full-duplex
- D. half-duplex
Answer: A,C
NEW QUESTION # 47
Click the Exhibit button.
Referring to the exhibit, which percentage of connection attempts failed on the access point named LD_RS_Support?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 48
A customer is replacing their previous WLAN controller with a Mist Edge to maintain centralization of user traffic.
How does Mist Edge affect control plane forwarding and data plane forwarding in this scenario?
- A. Control plane forwarding applies to the Mist Cloud and data plane forwarding applies to the Mist Edge.
- B. Control plane forwarding applies to the Mist Edge and data plane forwarding applies to the Mist Edge.
- C. Control plane forwarding applies to the Mist Edge and data plane forwarding applies to the Mist Cloud.
- D. Control plane forwarding applies to the Mist Cloud and data plane forwarding applies to the Mist Cloud.
Answer: A
Explanation:
When a customer replaces their previous WLAN controller with a Mist Edge in order to maintain centralization of user traffic, control plane forwarding applies to the Mist Cloud while data plane forwarding applies to the Mist Edge. So the correct answer is A. Control plane forwarding applies to the Mist Cloud and data plane forwarding applies to the Mist Edge.
NEW QUESTION # 49
What happens first when a client requests to join a WLAN?
- A. 802. 11 authentication
- B. ARP request
- C. DHCP discovery
- D. 802.11 association
Answer: A
NEW QUESTION # 50
Your organization has recently purchased new VoIP handsets. All of the VoIP handsets fail to connect to the corporate WLAN. However, all other devices connect successfully. You expect that there might be a bug with the new handsets. The vendor asks you to provide a pcap file of the handsets' connection attempts.
Which Juniper Mist feature will provide this file?
- A. Dynamic Packet Capture
- B. Clients Insights
- C. Service Level Expectations
- D. Alerts dashboard
Answer: D
Explanation:
According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide2, Dynamic Packet Capture is a feature that enables capturing packets from a client device and downloading them as a pcap file. This file can be used for troubleshooting purposes or sent to a vendor for analysis.
NEW QUESTION # 51
Which two statements are true about 802.1X/EAP? (Choose two.)
- A. Credentials are exchanged with a RADIUS server prior to the 4-way Handshake.
- B. Credentials are exchanged with a RADIUS server prior to the 802.11 Association.
- C. Credentials are exchanged with a RADIUS server after the 4-way Handshake.
- D. Credentials are exchanged with a RADIUS server after the 802.11 Association.
Answer: A,D
Explanation:
According to Wikipedia1, 802.1X is an IEEE Standard for port-based network access control (PNAC). It provides an authentication mechanism to devices wishing to attach to a LAN or WLAN using Extensible Authentication Protocol (EAP) over wired IEEE 802 networks and over 802.11 wireless networks, which is known as "EAP over LAN" or EAPOL.
The authentication process involves three parties: a supplicant (the client device), an authenticator (the network device such as an access point), and an authentication server (typically a RADIUS server). The supplicant must provide valid credentials to the authenticator before it can access the network resources.
The credentials are exchanged with a RADIUS server prior to the 4-way Handshake because the 4-way Handshake is used to establish encryption keys between the supplicant and authenticator after successful authentication2. The credentials are exchanged with a RADIUS server after the 802.11 Association because the 802.11 Association is used to establish a logical link between the supplicant and authenticator before authentication can take place3.
NEW QUESTION # 52
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The JN0-451 exam consists of 65 multiple-choice questions that need to be answered within 90 minutes. JN0-451 exam is available in English and Japanese and can be taken at any Pearson VUE testing center globally. To prepare for the exam, candidates can take advantage of Juniper's training courses, practice exams, and study guides. Achieving the JN0-451 certification can help IT professionals enhance their career opportunities, increase their earning potential, and gain recognition for their skills in deploying and managing Mist AI solutions.
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