Virtualization
Virtualization: If Quality of Service (QoS) is met, the multiplexed shared resource may seem like a unshared virtual resource.
Multiplexing + indirection = virtualization, i.e., refer the virtual resource as if it were the physical resource itself.
- Eg: virtual memory, virtual circuit, socket ports in BSD, telephone call.
- Indirection requires binding and unbinding…
- Similar to the use of pointers in the C language