Option A is correct because if the VDA machine is not registered with the Site where the Citrix policy was configured, it will not receive the policy settings from the Site database. The VDA machine must register with a Delivery Controller in the Site to apply the Citrix policies1 Option B is correct because the Unfiltered policy is applied to all objects in the Site by default, and it has the lowest priority. If the Unfiltered policy contains settings that conflict with the Citrix policy configured by the administrator, the Unfiltered policy settings will override the administrator's policy settings. The administrator can either disable the Unfiltered policy or change its priority to avoid this issue2 Option D is correct because if the VDA machine is not able to communicate with the Site database, it will not be able to retrieve the latest Citrix policy settings from the database. The VDA machine relies on the Delivery Controller to communicate with the Site database and apply the Citrix policies3