Wen is a network security professional. He wants to strengthen the security of his agency's network infrastructure defenses. Which control can he use to protect the network?

Question $2$ options:

A$)$

Use proxy services and bastion hosts to protect critical services

B$)$

Ensure that all operating systems have been patched with the latest updates from vendors

C$)$

Disable any unnecessary operating system services and processes that may pose a security vulnerability

D$)$

Require scanning of all removable media