Virtual Machine Requirements

B.

A virtual machine (VM) is a software-based emulation of a physical computer system that can run its own operating system and applications as if it were a physical machine. The software that enables this emulation is called a hypervisor, which creates and manages virtual machines.

There are two types of hypervisors: Type 1 and Type 2.

Type 1 hypervisors are also known as "bare-metal" hypervisors, as they run directly on the host machine's hardware, without the need for a host operating system. This type of hypervisor provides direct access to the underlying hardware and is typically used in enterprise data centers, where high performance and security are critical. Examples of Type 1 hypervisors include VMware ESXi, Microsoft Hyper-V, and Citrix XenServer.

On the other hand, Type 2 hypervisors run on top of a host operating system and are commonly used on personal computers or workstations. This type of hypervisor provides less direct access to hardware and is typically used for testing or development purposes. Examples of Type 2 hypervisors include VirtualBox, VMware Workstation, and Parallels Desktop.

Based on the above, the correct answer to the question is A. A virtual machine requires a Type 1 hypervisor and a host operating system to run. The Type 1 hypervisor provides direct access to the underlying hardware, while the host operating system provides services such as device drivers, network stack, and file system management to the virtual machine.