Why does computing virtualization technology enhance application reliability?

The correct answer highlights how virtualization technology enhances application reliability by allowing virtual machines (VMs) to be moved to physical hosts that possess sufficient resources. This flexibility is crucial for maintaining application reliability. If a physical server becomes overloaded or experiences hardware failure, the VM can be quickly migrated to another host with available capacity. This capability helps to ensure that applications remain operational and continue to function seamlessly, even in the face of resource constraints or hardware issues.

This dynamic movement of VMs contributes to better uptime and service availability, as it allows for load balancing, disaster recovery, and easy maintenance without significant downtime. In essence, it enhances the overall resilience of the applications running on those VMs by ensuring they have the necessary resources to operate effectively, thus reducing the chances of interruptions or failures.

In contrast, the other options do not accurately reflect how virtualization contributes to application reliability. For example, linking a VM to specific hardware would limit its flexibility and migration capacity, which is contrary to enhancing reliability. While it is true that multiple applications can indeed run concurrently on a physical host without conflicts, this alone does not address reliability concerns. Lastly, the statement about application virtualization eliminating the need for physical hosts misrepresents the concept, as physical infrastructure is still required to run virtual