Allied services have recently purchased NAC devices to detect and prevent non-company owned devices from...

Allied services have recently purchased NAC devices to detect and prevent non-company owned devices from attaching to their internal wired and wireless network. Corporate devices will be automatically added to the approved device list by querying Active Directory for domain devices. Non-approved devices will be placed on a protected VLAN with no network access. The NAC also offers a web portal that can be integrated with Active Directory to allow for employee device registration which will not be utilized in this deployment. Which of the following recommendations would make NAC installation more secure?