Explanation
Option A shows the correct commands to ensure that no rogue DHCP server will impact the network. The commands include the following steps:
* Enable DHCP snooping on the switch. DHCP snooping is a feature that prevents rogue DHCP servers from offering IP addresses to clients by filtering DHCP messages based on trusted and untrusted ports1.
* Configure VLANs 100, 110, and 120 as DHCP snooping VLANs. This means that DHCP snooping will be applied to these VLANs and any untrusted DHCP messages received on these VLANs will be dropped1.
* Configure LAG 1 as a trusted port for DHCP snooping. This means that any DHCP messages received on LAG 1 will be allowed and not filtered by DHCP snooping. LAG 1 is assumed to be connected to a legitimate DHCP server or a router that relays DHCP requests to a legitimate DHCP server1.
Option B is incorrect because it does not enable DHCP snooping on the switch or configure VLANs 100, 110, and 120 as DHCP snooping VLANs. Option C is incorrect because it does not configure LAG 1 as a trusted port for DHCP snooping. Option D is incorrect because it does not enable DHCP snooping on the switch or configure LAG 1 as a trusted port for DHCP snooping. References: 1
https://techhub.hpe.com/eginfolib/Aruba/OS-CX_10.04/5200-6692/GUID-BD3E0A5F-FE4C-4B9B-BE1D-FE7

Explanation
802.11k is a standard that provides mechanisms for APs and clients to dynamically measure the available radio resources in a wireless network. 802.11k defines radio resource management (RRM) functions, such as neighbor reports, link measurement, beacon reports, etc., that allow APs and clients to exchange information about the RF environment and make better roaming decisions. The other options are incorrect because they describe other standards, such as 802.11r, 802.11v, or 802.11ax. References:
https://www.arubanetworks.com/assets/wp/WP_WiFi6.pdf
https://www.arubanetworks.com/assets/ds/DS_AP510Series.pdf

Explanation
The helpdesk role is the default management role that should have been assigned for the user who needs to view nonsensitive configuration information. The helpdesk role has a level of 1 and allows read-only access to most commands except those related to security or passwords. The administrators role has a level of 15 and allows full read-write access to all commands. The operators role has a level of 5 and allows read-write access to most commands except those related to security or passwords. The config role has a level of 10 and allows read-write access to all commands except those related to security or passwords. References:
https://www.arubanetworks.com/techdocs/AOS-CX_10_08/UG/bk01-ch01.html
https://www.arubanetworks.com/techdocs/AOS-CX_10_08/UG/bk01-ch04.html

Explanation
This is the correct action to fix the issue where the SSID is not working as expected. WPA3-Enhanced Open is a new security standard for public networks that uses Opportunistic Wireless Encryption (OWE) to provide encryption and privacy on open, non-password-protected networks. WPA3-Enhanced Open can be configured on an Aruba Access Point by changing the SSID security mode to WPA3-Enhanced Open in Aruba Central or Aruba Instant. The other options are incorrect because they either do not use WPA3-Enhanced Open or do not exist as valid security modes. References:
https://www.arubanetworks.com/assets/wp/WP_WPA3-Enhanced-Open.pdf
https://www.arubanetworks.com/techdocs/Instant_86_WebHelp/Content/instant-ug/wpa3-enhanced-open.htm

Explanation
These are the correct parts of the solution for the requirements of configuring Policy Based Routing (PBR) for a subnet that will be used to test a new default route for your network. Option A defines a PBR policy named test-default-route with a rule named new-default-route that matches traffic from source IP address
10.2.250.0/24 and sets the next hop IP address to 10.1.1.253. Option E applies the PBR policy to VLAN 10 interface, which is the subnet that needs to use the new default route. The other options are incorrect because they either do not match the correct traffic or do not set the correct next hop. References:
https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-6728/bk01-ch02.html
https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-6728/bk01-ch03.html