What type of server virtualization has the hypervisor emulate hardware that it presents to the guest VM?

What type of server virtualization has the hypervisor emulate hardware that it presents to the guest VM?

• A. Paravirtualization
• B. Full virtualization
• C. Emulated environment
• D. Hardware emulation

Answer: (D)

The concept here is hardware emulation. In this approach, the hypervisor creates software models of the physical hardware and presents those virtual devices to the guest VM. The guest operating system runs as if it’s talking to real hardware—a network card, a disk controller, memory-mapped I/O, and so on—while the hypervisor handles all the device behavior in software and translates those actions to the host’s actual hardware or other resources. This is different from paravirtualization, where the guest is modified to cooperate with the hypervisor using special interfaces, and from the idea of full virtualization in a generic sense, which can involve virtual hardware without emphasizing the explicit software-emulated devices. The key idea is the guest VM experiences real-seeming hardware that is entirely emulated by the hypervisor.

The concept here is hardware emulation. In this approach, the hypervisor creates software models of the physical hardware and presents those virtual devices to the guest VM. The guest operating system runs as if it’s talking to real hardware—a network card, a disk controller, memory-mapped I/O, and so on—while the hypervisor handles all the device behavior in software and translates those actions to the host’s actual hardware or other resources. This is different from paravirtualization, where the guest is modified to cooperate with the hypervisor using special interfaces, and from the idea of full virtualization in a generic sense, which can involve virtual hardware without emphasizing the explicit software-emulated devices. The key idea is the guest VM experiences real-seeming hardware that is entirely emulated by the hypervisor.