Your company was hired by a small healthcare provider to perform a technical assessment on the network. What is the best approach for discovering vulnerabilities on a Windows-based computer?

The built-in Windows Update tool is designed to apply security patches and updates to the operating system and installed Microsoft software, not to actively scan for and report on existing vulnerabilities.

Nessus is a commercial vulnerability scanner that is widely used to identify security misconfigurations, missing patches, default credentials, and other vulnerabilities on various operating systems, including Windows. It actively probes the target system to provide a detailed report of potential weaknesses.

MITRE.org provides a public repository of Common Vulnerabilities and Exposures (CVEs), which is a database of known security flaws, but it is not a tool that can be used to scan a system for these vulnerabilities.

Creating a disk image of a clean Windows installation is a method for system deployment, backup, or forensic analysis, and it does not actively scan a live system for vulnerabilities.