Which of the following is not a characteristic of Virtualization?

• A. Storage
• B. CPU Virtualization
• C. Memory Isolation
• D. Isolation Between Virtual Machines

Answer: (A)

Virtualization is fundamentally about how compute resources are presented and managed for each virtual machine. The essential aspects are giving each VM its own view of CPU resources (CPU virtualization), ensuring each VM has a separate, isolated memory space (memory isolation), and keeping one VM’s processes and data from affecting or seeing another (isolation between virtual machines). These features make it possible to run multiple independent VMs on the same physical hardware with predictable performance and strong fault containment.

Storage, while crucial for VM operation and typically provided to VMs as virtual disks, belongs to the data and storage management layer rather than to the core virtualization behaviors themselves. You can still use various storage setups and even perform storage virtualization, but the defining characteristics that enable multiple VMs to run in parallel and remain isolated are about CPU presentation, memory separation, and VM isolation, not the storage aspect.