Refer to the exhibits.
Exhibit 1

Exhibit 2

Exhibit 3

A network administrator wants to allow contractors to access the corporate WLAN named EmployeesNet with the contractor role in VLAN 40. When users connect, they do not seem to get an IP address. After some verification checks, the network administrator confirms the DHCP server (10.254.1.21) is reachable from the Mobility Controller (MC) and obtains the outputs shown in the exhibits.
What should the network administrator do next to troubleshoot this problem?
Answer : A
Refer to the exhibit.

A network administrator has a Mobility Master (MM) Mobility Controller (MC) architecture along with the MC in the DMZ for terminating RAPs. The network firewall has been provisioned to allow access to the MC in the DMZ for both UDP 500 and 4500. Then he proceeds to provision an AP as shown in the exhibit.
Which additional configuration steps must the administrator to assure RAPs successfully contact the MC? (Choose two.)
Answer : D, E
Refer to the exhibit.

A network administrator is validating client connectivity and executes the show command shown in the exhibit. Which authentication method was used by a wireless station?
Answer : D
Refer to the exhibit.

A network administrator wants to configure an 802.1x supplicant for a wireless network that includes the following:
* AES encryption
* EAP-MSCHAP v2-based user and machine authentication
* Validation of server certificate in Microsoft Windows 10
The network administrator creates a WLAN profile and selects the change connection settings option. Then the network administrator changes the security type to Microsoft: Protected EAP (PEAP), and enables user and machine authentication under Additional Settings.
What must the network administrator do next to accomplish the task?
Answer : C
Refer to the exhibit.

A network administrator deploys DSCP based prioritization in the entire wired network to improve voice quality for a SIP-based IP telephony system used by the company. However, users report that calls they make from WLAN have poor audio quality, while desktop phones do not experience the same problem. The network administrator makes a test call and looks in the datapath session table.
Based on the output shown in the exhibit, what is one area that the network administrator should focus on?
Answer : D
Refer to the exhibit.

A network administrator completes the initial configuration dialog of the Mobility Controllers (MCs) and they join the Mobility Master (MM) for the first time. After the MM-MC association process, network administrator only creates AP groups, VAPs, and roles. Next, the network administrator proceeds with the configuration of the policies and creates the policy shown in the exhibit.
Which additional steps must be done to make sure this configuration takes effect over the contractor users?

Answer : C
Users run Skype for Business on wireless clients with no WMM support over an Aruba Mobility Master (MM) - Mobility Controller (MC) based network. When traffic arrives at the wired network, it does not include either L2 or L3 markings.
Which configuration steps should the network administrator take to classify and mark voice and video traffic with UCC heuristics mode?
Answer : A