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Best Quality Juniper JN0-452 Exam Questions
NEW QUESTION # 24
What are two 802.11 MAC frame types? (Choose two.)
- A. management
- B. BSSID
- C. control
- D. SSID
Answer: A,C
Explanation:
Reference: https://howiwifi.com/2020/07/13/802-11-frame-types-and-formats/#:~:text=There%20are%20three%20types%20of,the%20layer%203%2D7%20infor mation
NEW QUESTION # 25
Click the Exhibit button.
Referring to the exhibit, what is the meaning of the AI VALIDATED status update?
- A. The issue was opened and Marvis has closed it.
- B. The issue was opened and is unresolved.
- C. The issue was opened and Marvis confirms it has been closed.
- D. The issue was opened and closed manually.
Answer: C
Explanation:
The AI VALIDATED status update means that the issue was opened and Marvis confirms it has been closed.
According to the Marvis Virtual Network Assistant Datasheet1, the AI-VALIDATED status update means that the issue was opened and Marvis confirms it has been closed. This status indicates that Marvis has verified that the issue is no longer present and the root cause has been resolved.
References: https://www.juniper.net/us/en/products/cloud-services/marvis-virtual-network-assistant-datasheet.
html
NEW QUESTION # 26
According to the Coverage SLE, which classifier tracks an AP that transmits at a lower data rate than a connected client?
- A. Asymmetry Downlink
- B. Device Capability
- C. Latency
- D. Slow OKC Roam
Answer: A
Explanation:
According to the Virtual Network Assistant | Juniper Networks US document, Asymmetry Downlink is a classifier under the Coverage SLE that tracks an AP that transmits at a lower data rate than a connected client.
This can indicate poor coverage or interference issues that affect downlink performance.
References: https://www.juniper.net/us/en/products/cloud-services/virtual-network-assistant.html
NEW QUESTION # 27
Marvis Minis verifies possible network problems in which order?
- A. ARP, application, DNS, DHCP
- B. DNS, DHCP, ARP, application
- C. Application, DNS, ARP, DHCP
- D. DHCP, ARP, DNS, application
Answer: D
Explanation:
InJuniper Networks Mist AI Wireless,Marvis Minisare purpose-built synthetic clients designed to proactively validate end-user experience by continuously testing the network in the same way a real user device would. To accurately isolate the root cause of connectivity or performance issues, Marvis Minis follow astrict, layered verification sequencethat mirrors the logical dependency of network services.
The verification process begins withDHCP. This is the foundational step because, without a valid IP address, no further network communication can occur. Marvis Minis first confirm that the client can successfully complete the DHCP exchange and obtain proper IP configuration, including subnet, gateway, and lease parameters.
Once DHCP is validated, Marvis Minis move toARPverification. At this stage, the synthetic client confirms it can resolve the MAC address of the default gateway and communicate at Layer 2. ARP issues can prevent traffic from leaving the local network segment even when an IP address is present.
After Layer 2 and Layer 3 reachability are confirmed, Marvis Minis testDNSfunctionality. DNS resolution is critical for application access, as most modern applications rely on hostname resolution rather than raw IP addresses. Failed or slow DNS responses are a common cause of perceived "application outages." Finally, Marvis Minis validate theapplication layer. This includes testing reachability, response time, and success of specific application transactions such as HTTPS connections, SaaS access, or internal application availability. By the time application testing occurs, all prerequisite network services have already been verified.
The other options are incorrect because they test higher-layer services before validating lower-layer dependencies, which can lead to misleading conclusions. Mist's ordered approach-DHCP # ARP # DNS # Application-ensures precise fault isolation and actionable insights, allowing Marvis AI to accurately pinpoint where the user experience is breaking down.
NEW QUESTION # 28
Regarding roaming, which device determines when it is time to connect to another AP?
- A. the primary AP
- B. the client device
- C. the gateway router
- D. the current AP
Answer: B
NEW QUESTION # 29
Referring to the exhibit, what is the site ID?
- A. 02e208b2d34
- B. 978c48e6-6ef6-11e6-8bbf-02e208b2d34f
- C. 02e208b2d34f
- D. 9777c1a0-6ef6-11e6-8bbf-02e208b2d34
Answer: B
Explanation:
Reference: https://www.mist.com/documentation/find-org-site-id/
According to the exhibit, the site ID is 978c48e6-6ef6-11e6-8bbf-02e208b2d34f. This can be seen from the URL of the site dashboard, which contains the site ID as a parameter.
NEW QUESTION # 30
When would you choose to deploy a Juniper Mist Edge cluster instead of a single Mist Edge instance?
- A. When you only have a few APs at the site.
- B. When high availability and redundancy for tunneled traffic are critical.
- C. When you need to support more than 10,000 clients.
- D. When you want to use the Wi-Fi location service.
Answer: B
NEW QUESTION # 31
The customer wants to broadcast a WLAN at a certain time and day of the week.
Which statement is correct in this scenario?
- A. APs need to be upgraded for this feature.
- B. Third-party integration is required to achieve this requirement.
- C. SSID scheduling should be configured.
- D. Mist supports this function with an additional subscription.
Answer: C
Explanation:
If a customer wants to broadcast a WLAN at a certain time and day of the week, SSID scheduling should be configured According to the SSID Scheduling - Mist document1, SSID scheduling is a feature that allows you to customize your WLAN by choosing the exact days and times to broadcast the SSID. This feature can be useful for scenarios where you want to limit the availability of a WLAN to a certain time and day of the week.
References: https://www.mist.com/documentation/ssid-scheduling/
NEW QUESTION # 32
What are basic data rates?
- A. required data rates
- B. fastest data rates
- C. optional data rates
- D. disabled data rates
Answer: A
Explanation:
Basic data rates are the required data rates that all devices on a wireless network must support in order to connect to the network. These rates are used for management and control frames and can affect the performance of the network.
According to the Lecture 3 - Radio Frequency and Antenna Fundamentals - Part 2 document2, basic data rates are required data rates that all devices must support to communicate on a WLAN.
References:
http://faculty.georgebrown.ca/~jolenewa/courses/comp3049-intermediate-wirel/lecture-3-radio-frequency.
pdf
NEW QUESTION # 33
A user is connected to a WLAN that is secured with WPA3-Personal (SAE). Which of the following statements is true about the security of this user's traffic?
- A. The traffic is not encrypted, but the user is authenticated with a passphrase.
- B. Only traffic destined for the internet is encrypted; local network traffic is sent in the clear.
- C. The traffic is encrypted, but the AP's identity is not verified, leaving it vulnerable to honeypot attacks.
- D. All data frames are encrypted using a key derived from the shared passphrase, and management frames are protected.
Answer: D
NEW QUESTION # 34
When is it appropriate to manually set the channel and power for an AP instead of relying on RRM?
- A. In a stable environment with a predictable RF landscape, such as a remote office with a single AP, to prevent unnecessary changes.
- B. Never, RRM should always be used.
- C. In all network deployments.
- D. In a dynamic, high-density environment where conditions change frequently.
Answer: A
NEW QUESTION # 35
You must define VLANs as untagged, tagged, or using VLAN pooling.
In this scenario, where would you accomplish this task in the Juniper Mist UI?
- A. WLAN settings
- B. policy settings
- C. organization settings
- D. site settings
Answer: A
NEW QUESTION # 36
A Juniper Mist Edge appliance is configured with Upstream Resource Monitoring to check the availability of the default gateway at 10.1.1.1. The monitoring is configured to use an ARP probe.
Upstream Resource Monitoring
-
Protocol: ARP
Destination Hostname / IP: 10.1.1.1
Source VLAN: 10
VLAN Interfaces
VLAN 10: 10.1.1.254/24
If the default gateway at 10.1.1.1 stops responding to ARP requests, what is the immediate impact on the Mist Edge appliance?
- A. The Mist Edge will send an alert but continue to forward traffic.
- B. The APs will automatically fail over to the secondary cluster, if one is configured.
- C. The Mist Edge appliance will reboot.
- D. The tunnel termination services will become inactive to prevent traffic black-holing.
Answer: D
NEW QUESTION # 37
Which subscription is required to use the Marvis conversational assistant for troubleshooting wireless issues?
- A. Marvis for Wireless
- B. Asset Visibility
- C. Premium Analytics
- D. Wi-Fi Assurance
Answer: A
NEW QUESTION # 38
Regarding roaming, which device determines when it is time to connect to another AP?
- A. the primary AP
- B. the client device
- C. the gateway router
- D. the current AP
Answer: B
Explanation:
According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide1, roaming is the process of moving a wireless client device from one AP to another while maintaining network connectivity. The client device determines when it is time to connect to another AP based on its own roaming algorithm and criteria.
References: https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/17-2/config-guide/b_wl_17_2_cg
/roaming.html
NEW QUESTION # 39
Referring to the exhibit, what are two reasons why a Mist AP would have multiple IP addresses? (Choose two.)
- A. A guest portal is configured on a tagged VLAN.
- B. One IP address is used for redundancy.
- C. The Local Status Page is enabled in the site settings.
- D. One IP address is used for control traffic and one address is used for management traffic.
Answer: A,C
Explanation:
Reference: https://www.mist.com/documentation/aps-use-ip-addresses/
NEW QUESTION # 40
An administrator is reviewing the "Capacity" SLE for a site, which is showing poor performance due to high channel utilization. They want to implement a solution that will reduce co-channel interference in the crowded 2.4 GHz band by dynamically turning off some of the 2.4 GHz radios where coverage is already sufficient from neighboring APs.
Which Mist feature should be enabled in the site's RF Template?
- A. BSS Coloring
- B. Band Steering
- C. Auto-Cancellation for the 2.4 GHz band
- D. Auto Channel Assignment
Answer: C
NEW QUESTION # 41
According to Juniper Networks, it is recommended that devices using Mist location-based services (LBS) have line-of-sight to how many APs?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
InJuniper Networks Mist AI Wireless, accurate location-based services (LBS) depend heavily on proper RF design and access point density. Juniper recommends that devices participating in Mist LBS maintainline-of- sight (LoS) to at least three access pointsto achieve reliable and consistent location accuracy.
Mist location services use advanced techniques such asRSSI triangulation,virtual BLE (vBLE), andAI- driven probability surface modelingto calculate a device's position. These algorithms require multiple independent signal measurements to accurately determine a device's X,Y coordinates. With signals received fromthree or more APs, Mist can triangulate the device position effectively and minimize errors caused by multipath reflections, attenuation, or transient RF noise.
If a device has line-of-sight to only one or two APs, the system lacks sufficient spatial diversity to calculate a precise location. This can result in ambiguous positioning, reduced accuracy, or excessive location "drift." While additional APs (four or more) can further improve accuracy and stability-especially in high-value use cases such as asset tracking or wayfinding-three APs is the recommended minimum baselinefor dependable LBS performance.
Mist's AI continuously evaluates signal quality, AP geometry, and environmental factors to refine location estimates, but it cannot compensate for insufficient AP visibility. As a result, Juniper best practices for LBS design emphasize:
* Proper AP placement and height
* Adequate AP density
* Ensuring devices can "see" at least three APs at all times
The other options are incorrect because:
* One or two APsdo not provide enough data for reliable triangulation.
* Four APsmay improve accuracy but are not the minimum recommendation.
Therefore, the correct answer isB. 3.
NEW QUESTION # 42
Which 802.11 frame type is periodically sent by an AP to announce the presence of a wireless network and its parameters?
- A. Association Response
- B. Probe Response
- C. Acknowledgement (ACK)
- D. Beacon
Answer: D
NEW QUESTION # 43
Which 802.11 standard introduced multi-user MIMO (MU-MIMO) for the downlink, allowing an AP to transmit to multiple clients simultaneously?
- A. 802.11g
- B. 802.11n
- C. 802.11ac (Wi-Fi 5)
- D. 802.11ax (Wi-Fi 6)
Answer: C
NEW QUESTION # 44
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