Which posture agent provides a temporal client matching assessment?

The correct choice is the Web agent, which performs a temporal client matching assessment. This type of assessment allows for real-time evaluations of a client's compliance with predefined security policies during their active connection to the network. The Web agent leverages browser-based technology to assess the device posture without requiring a dedicated application to be installed on the client machine.

Temporal client matching is particularly beneficial in environments where quick evaluations are needed, such as when users are connecting from various devices or locations. The Web agent facilitates the assessment process seamlessly through web interfaces, which can dynamically respond to changing compliance states while the user is accessing network resources.

On the other hand, agents like the AnyConnect agent and NAC agent typically provide more persistent assessments and may require installation on the endpoint. The Mac OS X agent also operates similarly to the AnyConnect agent but is specifically for macOS devices. These agents generally focus on continuous monitoring rather than the immediate and transient assessments that the Web agent excels at, making the Web agent a more suitable choice for the specific requirement of temporal client matching.