Which of the following is NOT an example of a vulnerability scanning tool?

Wireshark is primarily a network protocol analyzer, not a vulnerability scanning tool. Its main function is to capture and analyze network traffic in real-time, allowing users to see the details of the packets transmitted over a network. This capability is crucial for diagnosing network issues, analyzing performance, or troubleshooting problems.

In contrast, Nessus, Qualys, and OpenVAS are all tools specifically designed for vulnerability scanning. They identify security weaknesses and vulnerabilities in systems, applications, or networks by conducting systematic assessments and audits of the security posture. These tools provide detailed reports on potential vulnerabilities, allowing organizations to take necessary actions to mitigate security risks. Therefore, Wireshark stands out as a network analysis tool, while the others serve the specific purpose of vulnerability assessment.