JN0-451試験問題集合格させるのは2023年最新の認証済み試験問題 [Q41-Q62]

JN0-451試験問題集合格させるのは2023年最新の認証済み試験問題

JN0-451試験問題でリアルに更新された問題PDF

質問 # 41
You have deployed location services at a site and have installed an application which includes the Mist SDK on Bluetooth-only mobile client devices. The devices with the SDK-enabled app have Bluetooth enabled, but the devices do not appear in the Mist GUI under Clients/App Clients.
What is causing this problem?

A. There is BLE and Wi-Fi co-channel interference.
B. The AP BLE radios do not hear the SDK-enabled client's BLE beacons.
C. The client devices are not connected to Wi-Fi or to a cellular data plan.
D. The clients are connected to the wrong WLAN.

正解：B

解説：
Explanation
If Bluetooth-only mobile client devices with an SDK-enabled app do not appear in the Mist GUI under Clients/App Clients even though they have Bluetooth enabled, it could be because the AP BLE radios do not hear the SDK-enabled client's BLE beacons.
According to the Mist documentation1, Mist SDK is a software development kit that enables indoor location and proximity services using Mist's virtual Bluetooth LE (vBLE) technology. The SDK allows mobile applications to communicate with Mist APs using BLE beacons that are transmitted by the client devices.
The devices with the SDK-enabled app have Bluetooth enabled, but they do not appear in the Mist GUI under Clients/App Clients because the AP BLE radios do not hear the SDK-enabled client's BLE beacons. This could be due to various factors such as interference, distance, obstacles, or configuration issues that affect the BLE signal strength and quality.

質問 # 42
Which two statements are true about 802.1X/EAP? (Choose two.)

A. Credentials are exchanged with a RADIUS server after the 802.11 Association.
B. Credentials are exchanged with a RADIUS server prior to the 4-way Handshake.
C. Credentials are exchanged with a RADIUS server prior to the 802.11 Association.
D. Credentials are exchanged with a RADIUS server after the 4-way Handshake.

正解：A、B

解説：
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.

質問 # 43
Regarding roaming, which device determines when it is time to connect to another AP?

A. the current AP
B. the primary AP
C. the gateway router
D. the client device

正解：D

解説：
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.

質問 # 44
What is the AP's role in the IEEE 802.1X authentication process?

A. It acts as a RADIUS proxy server.
B. It acts as an authenticator.
C. It acts as a supplicant.
D. It acts as an authentication server.

正解：B

解説：
In the IEEE 802.1X authentication process, the AP acts as an authenticator.
According to the Lecture 5 - Security - Part 1 document, the AP's role in the IEEE 802.1X authentication process is to act as an authenticator. This means that the AP acts as a gatekeeper between the client device (supplicant) and the RADIUS server (authentication server). The AP forwards authentication messages between the supplicant and the server and grants or denies network access based on the server's response.

質問 # 45
Mist WLAN objects are configurable at which two levels? (Choose two.)

A. site group
B. organization
C. site
D. access point

正解：A、C

解説：
According to the Mist documentation1, WLANs are wireless networks that can be configured with different settings such as SSID, security, encryption, authentication, etc. WLANs can be created and managed at different levels of hierarchy in the Mist cloud.
The site group level allows you to create and apply WLANs to a group of sites that share common characteristics or requirements2. This helps you to simplify and standardize your WLAN configuration across multiple sites.
The site level allows you to create and manage WLANs for a specific site that may have unique needs or preferences1. This gives you more flexibility and granularity for your WLAN configuration at each site.

質問 # 46
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 Edge and data plane forwarding applies to the Mist Cloud.
B. Control plane forwarding applies to the Mist Cloud and data plane forwarding applies to the Mist Cloud.
C. Control plane forwarding applies to the Mist Cloud and data plane forwarding applies to the Mist Edge.
D. Control plane forwarding applies to the Mist Edge and data plane forwarding applies to the Mist Edge.

正解：C

解説：
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.

質問 # 47
Mist WLAN objects are configurable at which two levels? (Choose two.)

A. site group
B. organization
C. site
D. access point

正解：A、C

解説：
Explanation
According to the Mist documentation1, WLANs are wireless networks that can be configured with different settings such as SSID, security, encryption, authentication, etc. WLANs can be created and managed at different levels of hierarchy in the Mist cloud.
The site group level allows you to create and apply WLANs to a group of sites that share common characteristics or requirements2. This helps you to simplify and standardize your WLAN configuration across multiple sites.
The site level allows you to create and manage WLANs for a specific site that may have unique needs or preferences1. This gives you more flexibility and granularity for your WLAN configuration at each site.

質問 # 48
Which Wireless Assurance SLE provides information on whether a user is able to associate to the WLAN?

A. Capacity
B. Throughput
C. Successful Connect
D. Roaming

正解：C

解説：
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.

質問 # 49
Which access points (APs) will be considered for inclusion in the AP Offline Marvis Action?

A. all APs in inventory
B. all purchased APs
C. all APs assigned to sites that have connected to the cloud previously
D. all APs assigned to sites

正解：C

解説：
The AP Offline Marvis Action will consider all APs assigned to sites that have connected to the cloud previously for inclusion. So the correct answer is A. all APs assigned to sites that have connected to the cloud previously.

質問 # 50
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 Edge and data plane forwarding applies to the Mist Cloud.
B. Control plane forwarding applies to the Mist Cloud and data plane forwarding applies to the Mist Edge.
C. Control plane forwarding applies to the Mist Cloud and data plane forwarding applies to the Mist Cloud.
D. Control plane forwarding applies to the Mist Edge and data plane forwarding applies to the Mist Edge.

正解：A

質問 # 51
According to the Coverage SLE, which classifier tracks a client that transmits at a lower data rate than the AP to which it is connected?

A. Slow OKC Roam
B. Wi-Fi Interference
C. Asymmetry Downlink
D. Asymmetry Uplink

正解：D

質問 # 52
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

正解：A

解説：
The 37% of Successful Connects suggest that 63% failed - however, these are spread between both LD_Testbed_MD and LD_RS_Support. If the only AP with connection issues was LD_RS_Support then the reverse math may have worked.

質問 # 53
Click the Exhibit button.

Users are occasionally having problems connecting to the Internet using Wi-Fi. You suspect possible interference from a neighboring Wi-Fi network.
Referring to the exhibit, which Wi-Fi Assurance SLE and classifier would provide information about this issue?

A. Throughput and Network Issues
B. Coverage and Weak Signal
C. Capacity and Non Wi-Fi Interference
D. Capacity and Wi-Fi Interference

正解：D

解説：
Explanation
The Wi-Fi Assurance SLE and classifier that would provide information about possible interference from a neighboring Wi-Fi network are Capacity and Wi-Fi Interference.
I hope this helps! Do you have any further q

質問 # 54
Which two authentication methods would be used with a guest portal? (Choose two.)

A. social login
B. external portal
C. RSA
D. Kerberos

正解：A、B

質問 # 55
Regarding the seven layer OSI networking model, which two layers are different between Ethernet and Wi-Fi? (Choose two.)

A. media access control (MAC) sub-layer
B. logical link control (LLC) sub-layer
C. physical layer
D. network layer

正解：A、C

質問 # 56
Which two Mist Aps would be used for BLE location? (Choose two.)

A. AP33
B. AP32
C. AP12
D. AP43

正解：A、D

解説：
According to the JNCIS-MistAI Certification page2, two Mist APs that would be used for BLE location are AP33 and AP43. These are the only two models that support vBLE array technology, which enables accurate location services without physical beacons.

質問 # 57
The customer wants to broadcast a WLAN at a certain time and day of the week.
Which statement is correct in this scenario?

A. SSID scheduling should be configured.
B. Mist supports this function with an additional subscription.
C. Third-party integration is required to achieve this requirement.
D. APs need to be upgraded for this feature.

正解：A

解説：
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.

質問 # 58
Which two SLEs measure the amount of time that it takes for a process to complete? (Choose two.)

A. AP uptime
B. throughput
C. roaming
D. time to connect

正解：C、D

解説：
According to the Virtual Network Assistant | Juniper Networks US document3, two SLEs that measure the amount of time that it takes for a process to complete are:
Roaming, which measures how long it takes for a client to switch from one AP to another without losing connectivity.
Time to Connect, which measures how long it takes for a client to complete all steps of network access such as authentication, DHCP, and DNS.

質問 # 59
You have deployed location services at a site and have installed an application which includes the Mist SDK on Bluetooth-only mobile client devices. The devices with the SDK-enabled app have Bluetooth enabled, but the devices do not appear in the Mist GUI under Clients/App Clients.
What is causing this problem?

A. There is BLE and Wi-Fi co-channel interference.
B. The AP BLE radios do not hear the SDK-enabled client's BLE beacons.
C. The client devices are not connected to Wi-Fi or to a cellular data plan.
D. The clients are connected to the wrong WLAN.

正解：B

解説：
If Bluetooth-only mobile client devices with an SDK-enabled app do not appear in the Mist GUI under Clients/App Clients even though they have Bluetooth enabled, it could be because the AP BLE radios do not hear the SDK-enabled client's BLE beacons.
According to the Mist documentation1, Mist SDK is a software development kit that enables indoor location and proximity services using Mist's virtual Bluetooth LE (vBLE) technology. The SDK allows mobile applications to communicate with Mist APs using BLE beacons that are transmitted by the client devices.
The devices with the SDK-enabled app have Bluetooth enabled, but they do not appear in the Mist GUI under Clients/App Clients because the AP BLE radios do not hear the SDK-enabled client's BLE beacons. This could be due to various factors such as interference, distance, obstacles, or configuration issues that affect the BLE signal strength and quality.

質問 # 60
Under which hierarchy level would you create a new site configuration?

A. access points
B. location
C. organization
D. clients

正解：B

解説：
According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide2, you can create a new site configuration under the location hierarchy level in the Juniper Mist UI. A site is a logical grouping of devices based on physical location or other criteria.

質問 # 61
What is meant when a Marvis Action is shown as "AI Validated"?