Which QoS mechanism provides guaranteed minimum bandwidth for voice or video traffic on an interface?

What should an administrator verify when Aruba Central reports a device as "Inactive"?

An administrator observes high CPU utilization on a core AOS-CX switch. Services are slow, and logs show excessive ARP entries being learned and flushed.
What is the most likely root cause of this issue?

Which two symptoms indicate that DHCP snooping is incorrectly configured on a network?
(Select two answers)

In designing for multi-tenant network environments, ________ is used to ensure traffic isolation at Layer 3 while allowing multiple customers to use the same overlapping IP addresses without conflict.