Which of the following architecture models ensures that critical systems are physically isolated on the network to prevent access from users with remote access privileges?

Segmentation involves dividing a network into smaller, distinct segments to control traffic flow and enhance security within an organization. While it improves security by limiting access between segments, it does not provide the same level of physical isolation as air-gapping, as segmented systems can still be accessed remotely unless additional measures are in place.

Virtualized architectures utilize software to create virtual instances of hardware resources, allowing for efficient utilization and flexibility. However, virtualization does not inherently isolate critical systems from remote access; virtual machines can still be connected to the same network, making them susceptible to unauthorized access if not properly secured.

Serverless architecture allows developers to build and deploy applications without managing the underlying servers, relying instead on cloud providers to handle infrastructure. While it simplifies deployment and scalability, serverless does not inherently address the isolation of critical systems from remote access, as these applications can still be exposed to network vulnerabilities.