Performing a hard reset on an Aruba CX switch typically involves pressing and holding the reset button for a specified amount of time, such as 5 seconds, and then releasing it. This action will initiate a reboot of the switch and return it to factory default settings, including the credentials.

In an AOS-CX switch, if the QoS trust mode is not configured, it is set to none by default. The VoIP phones will mark their traffic with a local-priority value, which, if the QoS trust mode is none, will correspond to CoS map entry 1 by default. The local-priority value of 1 at the branch office likely indicates that the traffic is not being prioritized correctly compared to the corporate office, where a local-priority of 5 suggests a higher level of prioritization for voice traffic.

WPA3-Personal enhances the security of wireless networks by using Simultaneous Authentication of Equals (SAE), which is a more secure replacement for the Pre-Shared Key (PSK) method used in WPA2. SAE strengthens the initial key exchange, providing better protection against offline dictionary attacks and ensuring that each session has a unique Pairwise Master Key (PMK), derived from the interaction between the client and the access point, including session-specific information like MAC addresses and nonces.