Which term describes software that enables multiple virtual machines to run on a single physical host?

Which term describes software that enables multiple virtual machines to run on a single physical host?

• A. Virtualization
• B. Guest OS
• C. Hypervisor
• D. Cloud Concepts

Answer: (C)

Hypervisors are the software that enables multiple virtual machines to run on a single physical host. They sit between the hardware and the virtual machines, presenting each VM with virtualized hardware and controlling how CPU, memory, storage, and networking are allocated. This orchestration keeps each VM isolated from the others while allowing them to operate simultaneously, each with its own guest OS. There are two main flavors: Type 1 hypervisors run directly on the hardware, while Type 2 hypervisors run atop a host operating system. Virtualization is the overall concept of creating virtual resources, with the hypervisor as the concrete technology that makes it possible. The guest OS is the operating system inside a VM, not the mechanism that enables multiple VMs on one host. Cloud concepts relate to cloud computing models and services, not the software layer that runs virtual machines.

Hypervisors are the software that enables multiple virtual machines to run on a single physical host. They sit between the hardware and the virtual machines, presenting each VM with virtualized hardware and controlling how CPU, memory, storage, and networking are allocated. This orchestration keeps each VM isolated from the others while allowing them to operate simultaneously, each with its own guest OS. There are two main flavors: Type 1 hypervisors run directly on the hardware, while Type 2 hypervisors run atop a host operating system.

Virtualization is the overall concept of creating virtual resources, with the hypervisor as the concrete technology that makes it possible. The guest OS is the operating system inside a VM, not the mechanism that enables multiple VMs on one host. Cloud concepts relate to cloud computing models and services, not the software layer that runs virtual machines.