Which scan type allows executable operations on a host and generally takes longer to run?

The agent-based scan is the correct choice because it involves installing an agent or sensor on the host machine. This agent allows for a deeper inspection of the system, providing insights into the local environment, configuration settings, files, applications, and running processes. Since it operates directly on the host, it can perform executable operations, such as checking for vulnerabilities or running compliance checks, which generates more detailed results compared to other scan types that do not have that level of access.

Furthermore, agent-based scans typically take longer to execute due to the comprehensive nature of the data collection and analysis involved. The agent must gather extensive information before completing the analysis, leading to extended scan times when compared to other methods that rely solely on remote assessments. By having a presence on the machine, the agent can continuously monitor and provide updates, adding to its functionality but also consuming more resources and time during each scan cycle.

In contrast, options like network scans and port scans primarily assess systems from an external viewpoint, which inherently reduces the time required to conduct the scan, as they don't involve extensive data retrieval from the host itself. Domain scans may also be less intensive compared to the detailed inspection possible with an agent, focusing more on networked resources without the extensive capabilities enabled by an installed