A database administrator contacts a security administrator to request firewall changes for a connection to a new internal application.

The security administrator notices th

at the new application uses a port typically monopolized by a virus.

The security administrator denies the request and suggests a new port or service be used to complete the application-s task.

Which of the following is the security administrator

practicing in this example?

A. Explicit deny

B. Port security

C. Access control lists

D. Implicit deny