A Development Team Signed a Contract That Requires Access to an On-Premises

Multiple Choice

A development team signed a contract that requires access to an on-premises physical server. Access must be restricted to authorized users only and cannot be connected to the Internet. Which of the following solutions would meet this requirement?

A) Establish a hosted SSO.
B) Implement a CASB.
C) Virtualize the server.
D) Air gap the server.