What method involves using push technology and relies heavily on network connectivity for vulnerability scanning?

The method that involves using push technology and relies heavily on network connectivity for vulnerability scanning is server-based scanning. In server-based vulnerability scanning, the scanning tool is installed on a central server. This server can push updates and scan commands to various endpoints within the network. The reliance on push technology allows real-time updates and monitoring, which is crucial for identifying vulnerabilities promptly.

This method is particularly effective in environments where continuous monitoring and quick responses to vulnerabilities are essential, as it can efficiently manage and coordinate scans across multiple devices within the network. By leveraging network connectivity, it can quickly gather data from various sources and provide a comprehensive view of the network's security posture.

The other methods, while useful in specific contexts, do not rely as heavily on push technology or network connectivity as server-based scanning does. For example, agent-based scanning typically requires individual software agents installed on each device, which may not always have the same immediacy of updates as a centralized server-based approach. Local client methods often involve running scans directly on the device without needing connectivity to a larger network. Cloud-based solutions might also utilize modern technologies but can vary in their dependency on network connectivity based on implementation and specific use cases.