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Free JN0-451 Exam Braindumps (page: 6)

Page 5 of 20
PDF with 79 Questions

You are installing and booting up your first Juniper Mist AP at your site. By default, which two statements are correct in this scenario? (Choose two.)

  1. The AP will attempt to connect to the Mist cloud using port 443.
  2. The AP will send DHCP requests using the native VLAN.
  3. The AP will send DHCP requests with a VLAN ID of 10.
  4. The AP will attempt to connect to the Mist cloud using port 8080.

Answer(s): A,B

Explanation:

According to the Initial AP Connection and VLANs & Static IP addresses - Mist document1, when a Juniper Mist AP boots up for the first time, it will expect to see a trunked port or the native VLAN=1 and will send a DHCP request on that VLAN. The AP will attempt to connect to the Mist cloud using port 443, which is the default HTTPS port.


Reference:

https://www.mist.com/documentation/initial-ap-connection-vlans-static-ip-addresses/



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

  1. Credentials are exchanged with a RADIUS server prior to the 4-way Handshake.
  2. Credentials are exchanged with a RADIUS server after the 802.11 Association.
  3. Credentials are exchanged with a RADIUS server after the 4-way Handshake.
  4. Credentials are exchanged with a RADIUS server prior to the 802.11 Association.

Answer(s): A,B

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.



Click the Exhibit button.



Referring to the exhibit, what is the meaning of the AI VALIDATED status update?

  1. The issue was opened and is unresolved.
  2. The issue was opened and Marvis confirms it has been closed.
  3. The issue was opened and Marvis has closed it.
  4. The issue was opened and closed manually.

Answer(s): B

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.


Reference:

https://www.juniper.net/us/en/products/cloud-services/marvis-virtual-network- assistant-datasheet.html



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

  1. all APs assigned to sites that have connected to the cloud previously
  2. all APs assigned to sites
  3. all APs in inventory
  4. all purchased APs

Answer(s): A

Explanation:

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.






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