What type of NAC is installed on the device requesting access to the network?

The correct answer pertains to a type of Network Access Control (NAC) that is directly installed on the device requesting access. This is often referred to as a Persistent NAC. This approach involves software agents that reside on the endpoint devices, continuously monitoring and enforcing security policies even after the initial authentication and connection to the network.

Persistent NAC solutions provide a comprehensive layer of protection by ensuring that devices remain compliant with security policies for as long as they are connected to the network. This includes checking for up-to-date antivirus definitions, ensuring operating systems and applications are patched, and confirming the absence of malware, thereby protecting the network from potential threats posed by non-compliant or vulnerable devices.

In contrast, other types of NAC, such as agent-based NAC, also involve agents but may not necessarily define them as being persistent. Agentless NAC solutions do not require any software installation on the endpoint, which limits their ability to provide ongoing monitoring as they typically only assess devices at the time of connection. Volatile Agent NAC refers to agents that are temporary and may not remain installed on the device post-assessment, which would not offer the same consistent security enforcement as a persistent solution.

Thus, the focus on persistent monitoring and compliance makes Persistent NAC a suitable choice for organizations