QUESTION: 40

A company recently deployed new Aruba Access Points at different branch offices Wireless 802.1X authentication will be against a RADIUS server in the cloud. The security team is concerned that the traffic between the AP and the RADIUS server will be exposed.
What is the appropriate solution for this scenario?

Enable EAP-TLS on all wireless devices
Configure RadSec on the AP and Aruba Central.
Enable EAP-TTLS on all wireless devices.
Configure RadSec on the AP and the RADIUS server

Answer(s): D

Explanation:

This is the appropriate solution for this scenario where wireless 802.1X authentication will be against a RADIUS server in the cloud and the security team is concerned that the traffic between the AP and the RADIUS server will be exposed. RadSec, also known as RADIUS over TLS, is a protocol that provides encryption and authentication for RADIUS traffic over TCP and TLS. RadSec can be configured on both the AP and the RADIUS server to establish a secure tunnel for exchanging RADIUS packets. The other options are incorrect because they either do not provide encryption or authentication for RADIUS traffic or do not involve RadSec.

Reference:

https://www.securew2.com/blog/what-is-radsec/ https://www.cloudradius.com/radsec-vs-radius/

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QUESTION: 41

A customer is using stacked Aruba CX 6200 and CX 6300 switches for access and a VSX pair of Aruba CX 8325 as a collapsed core 802 1X is implemented for authentication. Due to the lack of cabling, some unmanaged switches are still in use Sometimes devices behind these switches cause network outages The switch should send a warning to the helpdesk when the problem occurs You have been asked to implement an effective solution to the problem What is the solution for this?

Configure spanning tree on the Aruba CX 8325 switches Set the trap-option
Configure loop protection on all edge ports of the Aruba CX 6200 and CX 6300 switches No trap option is needed
Configure loop protection on all edge ports of the Aruba CX 6200 and CX 6300 switches Set up the trap-option
Configure spanning tree on the Aruba CX 6200 and CX 6300 switches No trap option is needed

Answer(s): C

Explanation:

This is the correct solution to the problem of devices behind unmanaged switches causing network outages due to loops. Loop protection is a feature that allows an Aruba CX switch to detect and prevent loops by sending loop protection packets on each port, LAG, or VLAN on which loop protection is enabled. If a loop protection packet is received by the same switch that sent it, it indicates a loop exists and an action is taken based on the configuration. Loop protection should be configured on all edge ports of the Aruba CX 6200 and CX 6300 switches, which are the ports that connect to end devices or unmanaged switches. The trap-option should be set up to send a warning to the helpdesk when a loop is detected. The other options are incorrect because they either do not configure loop protection or do not set up the trap-option.

Reference:

https://www.arubanetworks.com/techdocs/AOS-CX/10.05/HTML/5200-7540/GUID-99A8B276-0DA3- 4458-AFD8-42BFEC29D4F5.html https://www.arubanetworks.com/techdocs/AOS- CX/10.05/HTML/5200-7540/GUID-D8613BDE-CD21-4B83-8561-17DB0311ED8F.html

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QUESTION: 42

A customer wants to enable wired authentication across all their CX switches One of the requirements is that the switch must be able to authenticate a single computer connected through a VoIP phone.

Which feature should be enabled to support this requirement?

Multi-Domain Authentication
Device-Based Mode
MAC Authentication
Multi-Auth Mode

Answer(s): A

Explanation:

Multi-Domain Authentication is the feature that should be enabled to support the requirement that the switch must be able to authenticate a single computer connected through a VoIP phone. Multi- Domain Authentication is a feature that allows an Aruba CX switch to apply different authentication methods and policies to different devices connected to the same port. For example, a VoIP phone and a computer can be connected to the same port using a single cable, but they can be authenticated separately using different credentials and assigned to different VLANs. The other options are incorrect because they either do not support multiple devices on the same port or do not provide authentication.

Reference:

https://www.arubanetworks.com/techdocs/AOS- CX/10.05/HTML/5200-7540/GUID-7D9E9F6E-5C2A-4F7E-BE6D-A2C3A6C7B9F9.html https://www.arubanetworks.com/assets/tg/TB_ArubaCX_Switching.pdf

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QUESTION: 43

Refer to the exhibit.

A company has deployed 200 AP-635 access points. To but is not working as expected What would be the correct action to fix the issue?

Change the SSID to WPA3-Enhanced Open
Change the SSID to WPA3-Enterprise (CCM).
Change the SSID to WPA3-Personal
Change the SSID to WPA3-Enterpnse (CNSA).

Answer(s): D

Explanation:

According to the Aruba Campus Access Professional documents1, WPA3-Enterprise is a security mode that supports 802.1X authentication and encryption with either AES-CCM or AES-

GCMP. WPA3-Enterprise also optionally adds usage of Suite-B 192-bit minimum-level security suite that is aligned with Commercial National Security Algorithm (CNSA) for enterprise networks. This mode provides the highest level of security and is suitable for government and financial institutions. The exhibit shows that the SSID is configured with WPA3-Enterprise (CCM), which uses AES-CCM as the encryption protocol. However, this mode is not compatible with some devices that require CNSA compliance. Therefore, changing the SSID to WPA3-Enterprise (CNSA) would fix the issue and allow all devices to connect to the network.

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