VLANs logically segment a network into separate broadcast domains, reducing unnecessary broadcast traffic and improving network efficiency.

Explanation:
Authentication verifies a user's identity by validating credentials. Authorization defines what level of access a verified user is granted. Role-based access control enforces permissions based on assigned roles and allowed commands. Accounting records and tracks user actions for auditing and accountability purposes.

Push-to-talk radios operate in half-duplex mode, allowing communication in only one direction at a time while the other party waits to respond.

Quality of Service prioritizes latency-sensitive traffic such as voice and video, ensuring that applications like Microsoft Teams receive sufficient bandwidth and low latency even when the network is congested.

Zero Touch Provisioning on HPE Aruba Networking CX switches relies on DHCP to provide the switch with the necessary information, such as the location of configuration files or onboarding services, allowing the device to automatically provision itself with minimal manual intervention.