Implementing Aruba Campus Switching solutions

Refer to the exhibit.

AOS-Switches will enforce 802.1X authentication on edge ports. The company has two RADIUS servers, which are meant to provide redundancy and load sharing of requests. The exhibit shows the planned RADIUS settings to deploy to the switches.
What should customers understand about this plan?

An administrator wants to ensure that an AOS-Switch forwards all traffic that it receives on interface 1 with high priority.
- Switches should also communicate the high priority to other switches across the traffic path.
- The switch has type of service disabled.
- The administrator plans to apply 802.1p priority 5 to interface 1.
What should the administrator check to ensure that the configuration will work properly?

Refer to the exhibit.

A network administrator sets up prioritization for an application that runs between Device 1 and Device 2. However, the QoS for the application is not what the administrator expects.
How can the administrator check if the network infrastructure prioritizes traffic from Device 1 and Device 2?

Refer to the exhibits.
Exhibit 1.

Exhibit 2.

The exhibits show the current operational state for routes on Switch-3. The company wants Switch-3 to prefer the link to Switch-1 over the link to Switch-2 for all intra-area, inter-area, and external traffic.
What can the network administrator do to achieve this goal?

An AOS-Switch implements tunneled node.
Which benefit does the PAPI enhanced security key provide?