What is the primary purpose of PromqryUI?

The primary purpose of PromqryUI is to detect network interfaces that are running in promiscuous mode. Promiscuous mode allows a network interface to receive all packets on the network segment, regardless of their destination address. This is often used for monitoring and capturing network traffic, which is critical in security assessments and incident handling.

By identifying interfaces that are in promiscuous mode, security personnel can determine if there are any unauthorized monitoring activities occurring on the network. This capability is important for maintaining the integrity and confidentiality of data within the network, as it can reveal potential security breaches or malicious activities.

The other options do not align with the main function of PromqryUI. Monitoring the network for strange packets might be a function of different network monitoring tools but is not the specific purpose of PromqryUI. Checking if MAC addresses have changed can be related to network administration tasks but does not represent the core functionality of this tool. Sending a non-broadcast ARP is a specific networking technique and is not directly related to the detection of promiscuous mode interfaces.