In what mode does DSC primarily secure server configurations?

DSC, or Desired State Configuration, primarily secures server configurations through what is known as pull mode. In this mode, a server periodically checks in with a central configuration repository, typically a Pull Server, to obtain its desired configuration. This approach allows for a consistent and automated way to ensure that the server's configuration matches the specified desired state defined in the configuration scripts.

By utilizing pull mode, DSC can maintain compliance with the defined configurations, automatically applying any necessary changes to align with the desired state. This mode is particularly advantageous in environments where configurations need to be updated regularly or consistently monitored for drift.

Other modes, such as active mode, standalone mode, or express mode, do not provide the same level of ongoing management and automated compliance checks that pull mode offers. Therefore, the choice of pull mode reflects the process by which DSC ensures that configurations are not only set but also regularly verified and maintained.