What is correct regarding rate limiting and egress queue shaping on AOS-CX switches?

An administrator has an aggregation layer of 8325CX switches configured as a VSX pair. The administrator is concernedthat when OSPF network changes occur, the aggregation switches will respond to the changes slowly, and this will affectnetwork connectivity especially VoIP calls, in the connected access layer switches What should the administrator do on the aggregation layer switches to alleviate this issue?

A company has implemented 802 1X authentication on AOS-CX access switches, where two ClearPass servers are used to implement AAA Each switch has the two servers defined A network engineer notices the following command configured on the AOS'CX switches:
radius-server tracking user-name monitor password plaintext arubal23
What is the purpose of this configuration?

A company is implementing a new wireless design and needs it to support high availability, even during times of switch system upgrades. The solution will involve Aruba Mobility Controller (MC) and Aruba AP connections requiring POE. Which campus AOS-CX switch solution and virtual switching should the company implement at the campus access layer?

A company has recently purchased a ClearPass AAA solution. Their network consists of AOS-CX switches at the access layer. The company is implementing a rollout of IoT devices for smart building management to control the lighting and HVAC systems. The network administrator is concerned about allowing secure access to these devices since they only support MAC-Auth.
Which ClearPass feature should the administrator leverage to help determine that MAC address spoofing is not occurring for this group of devices?