A vice president at a manufacturing organization is concerned about desktops being connected to the network. Employees need to log onto the desktops' local account to verify that a product is being…

Placing desktops in a DMZ still connects them to a network segment, typically for controlled external access, which contradicts the goal of maximum isolation.

Creating a separate VLAN segments the network but does not remove the desktops from the network entirely, failing to provide the "as isolated as possible" level of isolation.

Air gapping involves physically isolating a computer or network from all other networks, including the internet, providing the highest level of security and fulfilling the requirement for desktops to be "as isolated as possible" while still allowing local logins.

Joining desktops to an ad-hoc network creates direct network connections between devices, directly opposing the requirement for maximum isolation.