[&] You have contract developers working on a project that uses servers on a virtual network in Azure.  The developers are not part of an identity store and are located throughout Europe.  You need to configure point to site connectivity for an existing VPN gateway to support the developers.  What steps should you take?  (Select all that apply)
- Generate certificates for each developer based on the root certificate
- Configure the gateway to use a RADIUS server for authentication
- Generate a root certificate
- Register the client certificates in the VPN gateway
- Register the root certificate in the VPN gateway