CompTIA Security+ SY0-701 Practice Question
An organization needs to ensure that its most critical systems are protected from external network threats and unauthorized access. Which of the following methods provides the MOST secure way to achieve this level of isolation?
Employ network address translation (NAT) for these devices
Install a firewall to filter traffic between these systems and other networks
Implement an air-gapped network for these systems
Use a VLAN to segment these systems from the corporate network