Juniper JN0-451 Dumps - 100% Cover Real Exam Questions (Updated 82 Questions)
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NEW QUESTION # 17
You are asked to set up occupancy analytics for an office that has an existing Mist AP.
Which three types of devices are counted by default? (Choose three.)
- A. Wi-Fi clients
- B. cellular clients
- C. BLE assets
- D. Zigbee clients
- E. mobile app clients
Answer: A,C,E
NEW QUESTION # 18
Which two statements are correct about the radio frequency rule of 10s and 3s? (Choose two.)
- A. If the signal strength increases by 3 dB, the power is doubled.
- B. If the signal strength decreases by 10 dB, the power is halved.
- C. If the signal strength decreases by 10 dB, the power decreases tenfold.
- D. If the signal strength increases by 3 dB, the power is tripled.
Answer: A,D
Explanation:
NEW QUESTION # 19
Which two terms correctly describe transmissions over Wi-Fi? (Choose two.)
- A. half-duplex
- B. point-to-point medium
- C. shared medium
- D. full-duplex
Answer: A,C
Explanation:
Transmissions over Wi-Fi are shared medium and half-duplex.
According to the IEEE 802.11 - Wikipedia document2, two terms that correctly describe transmissions over Wi-Fi are:
Shared medium, which means that multiple devices use the same wireless channel and have to compete for access and avoid collisions.
Half-duplex, which means that devices can either transmit or receive data at a time, but not both simultaneously.
NEW QUESTION # 20
Which two authentication methods would be used with a guest portal? (Choose two.)
- A. RSA
- B. social login
- C. Kerberos
- D. external portal
Answer: B,D
NEW QUESTION # 21
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. Mist supports this function with an additional subscription.
- C. Third-party integration is required to achieve this requirement.
- D. SSID scheduling should be configured.
Answer: D
NEW QUESTION # 22
Which two SLEs measure the amount of time that it takes for a process to complete? (Choose two.)
- A. time to connect
- B. AP uptime
- C. throughput
- D. roaming
Answer: A,C
NEW QUESTION # 23
Which two statements are true about 802.1X/EAP? (Choose two.)
- A. Credentials are exchanged with a RADIUS server prior to the 802.11 Association.
- B. Credentials are exchanged with a RADIUS server after the 4-way Handshake.
- C. Credentials are exchanged with a RADIUS server after the 802.11 Association.
- D. Credentials are exchanged with a RADIUS server prior to the 4-way Handshake.
Answer: C,D
Explanation:
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 # 24
What happens first when a client requests to join a WLAN?
- A. ARP request
- B. 802. 11 authentication
- C. 802.11 association
- D. DHCP discovery
Answer: B
Explanation:
Reference:
According to the 802.11 Network Security Fundamentals - Cisco document, 802.11 authentication is the first step when a client requests to join a WLAN. 802.11 authentication is a process whereby the access point either accepts or rejects the identity of a client device to create resources.
NEW QUESTION # 25
Which two statements correctly describe an extended service set (ESS)? (Choose two.)
- A. The SSID is common across all BSSs within the ESS.
- B. Each BSS within the ESS share a common BSSID.
- C. Each BSS within the ESS has its own unique BSSID.
- D. The SSID is unique across all BSSs within the ESS.
Answer: A,B
NEW QUESTION # 26
Which Wireless Assurance SLE provides information on Opportunistic Key Caching (OKC)?
- A. Coverage
- B. Capacity
- C. Time to Connect
- D. Roaming
Answer: D
Explanation:
Reference:
According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide1, the Wireless Assurance SLE that provides information on Opportunistic Key Caching (OKC) is Roaming. OKC is a fast roaming technique that allows wireless clients and the WLAN infrastructure to cache only one PMK for client association with a WLAN, even when roaming between multiple APs.
NEW QUESTION # 27
What are basic data rates?
- A. required data rates
- B. optional data rates
- C. fastest data rates
- D. disabled data rates
Answer: A
Explanation:
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.
NEW QUESTION # 28
Which two statements are correct about the radio frequency rule of 10s and 3s? (Choose two.)
- A. If the signal strength increases by 3 dB, the power is doubled.
- B. If the signal strength decreases by 10 dB, the power is halved.
- C. If the signal strength increases by 3 dB, the power is tripled.
- D. If the signal strength decreases by 10 dB, the power decreases tenfold.
Answer: B,D
NEW QUESTION # 29
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. High Density
- C. Compatible
- D. No Legacy
Answer: C
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 # 30
Click the Exhibit button.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. The WLAN with SSID Eero1234 will cause adjacent channel interference.
- B. The WLAN with SSID Bob24WiFi will cause adjacent channel interference.
- C. The WLAN with SSID NETGEAR24 will cause adjacent channel interference.
- D. The WLAN with SSID Verizon-5G_Tuna will cause adjacent channel interference.
Answer: A,C
NEW QUESTION # 31
Which two SLEs measure the amount of time that it takes for a process to complete? (Choose two.)
- A. throughput
- B. time to connect
- C. AP uptime
- D. roaming
Answer: B,D
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
Regarding roaming, which device determines when it is time to connect to another AP?
- A. the client device
- B. the primary AP
- C. the gateway router
- D. the current AP
Answer: A
Explanation:
Explanation
Regarding roaming, it is ultimately up to the client device to determine when it's time to connect to another AP based on signal strength and other factors such as network congestion or interference. So the correct answer is B. The client device.
NEW QUESTION # 33
Click the Exhibit button.
Referring to the exhibit, which statement is correct about the Post-Install user's role?
- A. It is used for help desk monitoring and workflow for all sites.
- B. It has full access to all sites.
- C. It has access limited to installing APs and switches at all sites.
- D. It has read-only access to all sites.
Answer: C
Explanation:
Explanation
the Post-Install user role is also known as Installer role, which has a minimum level of access to the org, sites, and APs. It can do the initial installation such as claim AP to Org, assign/unassign AP, or place on map, etc., but cannot unclaim or remove the AP from the Org. Site and AP access is allowed based on timed grace period and/or explicit site access.
https://www.mist.com/documentation/mist-ai-mobile-app/
NEW QUESTION # 34
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
- A. The packet capture was taken automatically.
- B. The packet capture will contain full frames.
- C. The packet capture was taken manually.
- D. The packet capture will contain only management frames.
Answer: A
Explanation:
According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide2, a device profile is a configuration object that allows you to group similar devices together and apply consistent WxLAN policies across multiple sites. A device profile defines parameters such as device type, OS, and MAC address.
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 APs are installed at 19 feet from the floor, above the recommended 15 feet.
- B. The Show assets check box has not been selected in Live View.
- C. Marvis was not enabled for the site.
- D. The Locate this Client as an Asset check box has not been selected at the BLE client level.
Answer: B,D
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 # 36
Which two fields are required when creating a new site? (Choose two.)
- A. location
- B. RF template
- C. site name
- D. time zone
Answer: C,D
Explanation:
According to the Create a Mist Account and Organization - Mist document1, two fields that are required when creating a new site are:
Site name, which is a unique identifier for the site within the organization.
Time zone, which is used to display the correct time for events and reports related to the site.
NEW QUESTION # 37
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 access points.
- C. There are frequent roams between different bands.
- D. There are frequent roams between different protocols.
Answer: B
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 # 38
You are asked to forward event messages from Mist to an external log collector.
In this scenario, which feature would enable this capability?
- A. SNMP traps
- B. webhooks
- C. syslog
- D. NETCONF
Answer: B
NEW QUESTION # 39
What are two functions of Mist Radio Resource Management (RRM)? (Choose two.)
- A. transmit power control
- B. channel assignment
- C. WLAN scheduling
- D. Ethernet configurations
Answer: A,B
NEW QUESTION # 40
You are deploying multiple Mist APs across many sites in your network. You must ensure that you apply consistent WxLAN and WLAN policies across all sites within the same organization.
Which configuration object should be used to accomplish this behavior?
- A. a config template
- B. a device profile
- C. an RF template
- D. site labels
Answer: A
Explanation:
According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide1, a config template is a configuration object that can be used to apply consistent WxLAN and WLAN policies across all sites within the same organization. A config template can be applied to a site group, which is a collection of sites that share common attributes.
NEW QUESTION # 41
Some users cannot connect to the network. You want to identify these users. In Marvis, which query accomplishes this task?
- A. troubleshoot clients
- B. troubleshoot access points
- C. unhappy clients
- D. list clients
Answer: C
Explanation:
According to the Marvis - Mist document, unhappy clients is a query that can be used in Marvis to identify users who cannot connect to the network. Unhappy clients shows a list of clients who have experienced poor service level expectations (SLEs) such as connection failures, coverage issues, or low throughput.
NEW QUESTION # 42
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